Motor Drivers
Products (52)
L9960TR - Dual H-Bridge Motor Driver | STMicroelectronics | Automotive
The STMicroelectronics L9960TR is a dual H-bridge motor driver designed for automotive and industrial applications, capable of driving two DC motors or one stepper motor with up to 6A continuous current per channel. It operates from a supply voltage range of 4.5V to 28V, making it suitable for 12V and 24V systems. The device is housed in a PowerSSO-36 package with exposed pad for enhanced thermal performance. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into high-current, high-voltage signals to drive motors. It typically includes H-bridge topology for bidirectional current control, protection features such as overcurrent and thermal shutdown, and diagnostic feedback. Motor drivers are a subset of power management ICs, which manage and distribute power within electronic systems. Key features of the L9960TR include dual H-bridge architecture, SPI interface for configuration and diagnostics, PWM current control with programmable slew rate, and comprehensive protection including undervoltage lockout, overcurrent, and overtemperature shutdown. The device also features a low quiescent current in standby mode, making it suitable for battery-powered applications. The L9960TR utilizes a robust power MOSFET output stage with low RDS(on) to minimize power dissipation. The SPI interface allows real-time monitoring of output currents and fault conditions, enabling advanced diagnostic capabilities. The device is AEC-Q100 qualified, ensuring reliability in harsh automotive environments. Typical applications include automotive DC motor control for window lifts, seat adjustment, and mirror positioning, as well as industrial automation for conveyor belts and robotic actuators. The device's wide voltage range and high current capability make it versatile for various motor control scenarios. When designing with the L9960TR, ensure proper PCB layout with adequate copper area for thermal dissipation, and place decoupling capacitors close to the supply pins. The SPI interface should be isolated from high-current traces to minimize noise coupling.
L9969 - Automotive H-Bridge Driver | STMicroelectronics | Motor Control
The STMicroelectronics L9969 is an automotive-grade integrated circuit designed for single and dual H-bridge motor control applications. It provides a full H-bridge power stage consisting of two half bridges, intended primarily for the control of DC motors, resistive loads, and inductive loads. The device is available in PowerSSO-24 (single H-bridge) and PowerSSO-36 (dual H-bridge) packages, offering flexible integration for various automotive actuator systems. An H-bridge driver is a power management IC that enables bidirectional current flow through a load, typically a DC motor, by controlling four switching elements (transistors) arranged in an H configuration. It sits within the motor driver hierarchy, which includes the power stage, gate drivers, protection circuitry, and control logic. The L9969 integrates these functions, providing output current direction control and supervising functions, making it a critical component in automotive actuator control systems. Key features of the L9969 include dual H-bridge capability (in the PowerSSO-36 variant), output current direction control, and comprehensive supervising functions such as overcurrent, overtemperature, and undervoltage protection. The device supports independent input driving commands for each half bridge, allowing flexible motor control configurations. It is designed to operate over a wide automotive temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The L9969 is built on STMicroelectronics' robust automotive-grade process technology, meeting the stringent quality and reliability standards of the automotive industry. It is AEC-Q100 qualified, ensuring suitability for safety-critical applications. The device incorporates advanced diagnostic features, including open-load detection and short-circuit protection, which are essential for functional safety in automotive systems. Typical applications include throttle control actuators, HVAC flap control, mirror adjustment, seat positioning, and other DC motor-driven actuators in vehicles. The dual H-bridge configuration allows control of two independent motors or a single motor with higher current capability by paralleling the outputs. The device's robust protection features and automotive qualification make it suitable for both body control modules and powertrain applications. When designing with the L9969, ensure proper PCB layout for the power stage to minimize parasitic inductance and resistance. Use appropriate bulk and decoupling capacitors on the power supply pins, and provide adequate thermal management through copper pours and vias. The device's SPI interface (where available) allows for high-speed configuration and diagnostics, while the parallel input interface provides simple, direct motor control.
L9970-TR - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The L9970-TR is an automotive-grade dual H-bridge motor driver IC from STMicroelectronics, designed for driving DC motors and stepper motors in automotive and industrial applications. It integrates two full H-bridges capable of delivering continuous output current up to 1.2 A per channel, with a supply voltage range from 5.5 V to 36 V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for high-current applications. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current levels required to drive electric motors. In the system hierarchy, a motor driver sits between the MCU and the motor, acting as a power amplifier and protection interface. It typically includes H-bridge topologies for bidirectional control, current sensing, and diagnostic feedback. Motor drivers are essential in automotive systems such as power windows, seat adjustment, mirror positioning, and HVAC actuators, where precise and reliable motor control is critical. Key features of the L9970-TR include a wide operating voltage range of 5.5 V to 36 V, making it suitable for both 12 V and 24 V automotive electrical systems. Each H-bridge can source or sink up to 1.2 A continuous current, with peak current capability of 2 A. The device includes built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring robust operation in harsh automotive environments. The PowerSO-20 package offers a low thermal resistance of 35 °C/W, enabling efficient heat dissipation without external heatsinks in moderate load conditions. The L9970-TR utilizes a standard H-bridge architecture with four power MOSFETs per channel, controlled by logic-level inputs. The device supports both DC motor and stepper motor configurations, with the ability to control direction and speed via PWM signals. The integrated current sensing feature allows for closed-loop torque control, improving system efficiency and performance. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive applications. Typical applications include automotive power windows, seat adjustment, mirror control, HVAC actuators, and industrial automation systems. The wide input voltage range and robust protection features make it ideal for use in 12 V and 24 V systems, where reliability and safety are paramount. The device can also be used in robotics and mechatronics applications requiring bidirectional motor control. When designing with the L9970-TR, ensure adequate PCB copper area for thermal dissipation, especially when driving loads near the maximum current rating. Place decoupling capacitors close to the supply pins to minimize voltage transients. The device's enable and diagnostic pins allow for system-level fault monitoring, which is essential for safety-critical applications.
L9971 - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9971 is a dual H-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates two independent H-bridge outputs capable of driving DC motors, stepper motors, or other inductive loads with a supply voltage range of 5.5V to 36V. The device is available in a PowerSO-20 package, providing a compact solution for motor control in space-constrained automotive modules. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each capable of driving a DC motor in both directions (forward and reverse) and providing braking. It is a type of motor driver, which falls under the broader category of power management ICs. The L9971 integrates the power stage, control logic, and protection features, simplifying the design of motor control systems. Key features of the L9971 include a low quiescent current in standby mode, making it suitable for battery-powered automotive applications. It provides overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. The device also features a serial peripheral interface (SPI) for advanced control and diagnostics, allowing the microcontroller to monitor and configure the driver in real time. The L9971 uses a smart power technology that combines bipolar CMOS and DMOS (BCD) processes, enabling high-current driving capability with low power dissipation. The integrated protection and diagnostic features reduce the need for external components, lowering the overall system cost and improving reliability. The device is designed to meet automotive quality standards, including AEC-Q100 qualification, ensuring reliable operation over the automotive temperature range of -40°C to +150°C. Typical applications include automotive power windows, sunroofs, seat adjustment, and other DC motor control systems. The L9971 is also suitable for industrial automation, robotics, and other applications requiring bidirectional control of DC motors. Its wide supply voltage range and robust protection make it a versatile choice for various motor control designs. When designing with the L9971, ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal management. The PowerSO-20 package has an exposed pad that should be soldered to a large copper area for heat dissipation. Additionally, place decoupling capacitors close to the supply pins to reduce voltage spikes during switching.
L9972 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9972 is a dual H-bridge motor driver designed for automotive applications, capable of driving two DC motors or one stepper motor with a supply voltage range of 5.5V to 36V. It integrates two full H-bridges with a maximum output current of 1.2A per channel, making it suitable for a variety of automotive actuators such as mirror adjustment, headlamp leveling, and HVAC flap control. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher current and voltage needed to drive a motor. In automotive systems, motor drivers are essential for controlling the position of mirrors, seats, and valves, and they must operate reliably over a wide temperature range and withstand harsh electrical conditions. The L9972 belongs to the family of automotive motor drivers, which are a subset of power management ICs used in body control modules and other vehicle subsystems. Key features of the L9972 include a low quiescent current of 50 µA in standby mode, which is critical for minimizing battery drain in vehicles. It also features overcurrent and thermal shutdown protection, ensuring robust operation in demanding environments. The device is available in a PowerSO-20 package, which provides excellent thermal performance for high-current applications. The L9972 is AEC-Q100 qualified, meeting the stringent quality standards required for automotive electronics. The L9972 uses a standard H-bridge topology with integrated freewheeling diodes, allowing bidirectional control of DC motors. It supports both parallel and serial control interfaces, with a SPI interface for advanced diagnostics and configuration. The device can operate in a half-bridge or full-bridge mode, providing flexibility in system design. The integrated protection features include undervoltage lockout, overvoltage clamp, and overtemperature shutdown, which help prevent damage to the motor and the driver itself. Typical applications for the L9972 include automotive mirror adjustment systems, headlamp leveling actuators, and HVAC flap control. In these applications, the L9972 provides precise motor control with low power dissipation, enabling efficient and reliable operation. The wide supply voltage range and robust protection features make it suitable for use in 12V and 24V automotive electrical systems. When designing with the L9972, it is important to ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal relief for the PowerSO-20 package. The SPI interface should be used for diagnostics and to configure the device for specific motor characteristics. Additionally, the supply voltage should be decoupled with a capacitor close to the VCC pin to reduce voltage transients.
L9972-TR - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9972-TR is a dual H-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates two independent H-bridge outputs capable of driving DC motors, stepper motors, or solenoids with a supply voltage range of 5.5V to 36V and a continuous output current of up to 1.2A per channel. The device is housed in a PowerSO-20 package with an exposed pad for enhanced thermal performance, making it suitable for space-constrained automotive modules. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each consisting of four power transistors (typically MOSFETs) arranged to control the direction and speed of a DC motor by selectively switching the polarity of the voltage applied to the motor terminals. This configuration allows for forward, reverse, brake, and coast operations, making it a fundamental building block in motor control systems. In the broader system hierarchy, the L9972-TR sits within the motor driver category, which is part of the power management IC family, ultimately contributing to the electromechanical actuation layer of automotive and industrial systems. Key features of the L9972-TR include a low quiescent current of 50 µA in standby mode, which is critical for battery-powered automotive applications to minimize drain when the ignition is off. The device also provides overcurrent, overtemperature, and undervoltage lockout protection, ensuring robust operation in harsh environments. The SPI interface allows for advanced diagnostics and configuration, enabling real-time monitoring of load conditions and fault status. The PowerSO-20 package offers a thermal resistance of 35 °C/W, facilitating heat dissipation in high-current applications. From a technical architecture perspective, the L9972-TR employs a CMOS process with integrated power MOSFETs, eliminating the need for external freewheeling diodes in many applications. The H-bridge outputs are designed to handle inductive loads with built-in flyback protection, reducing external component count and simplifying PCB layout. The SPI interface operates at up to 5 MHz, providing fast communication with a microcontroller for precise motor control and diagnostic feedback. Typical applications include automotive power window lifts, seat adjustment motors, mirror adjustment, and HVAC flap control. The device is also suitable for industrial automation, robotics, and small appliance motor drives where bidirectional control and diagnostic capabilities are required. Its wide supply voltage range and robust protection features make it a versatile choice for 12V and 24V systems. When designing with the L9972-TR, ensure adequate PCB copper area for the exposed pad to maintain junction temperature below the maximum rating. The SPI interface should be isolated from high-current traces to prevent noise coupling, and a bulk capacitor of at least 100 µF should be placed near the supply pins to handle inrush currents during motor start-up.
L9973 - Dual H-Bridge Motor Driver | STMicroelectronics | Automotive
The STMicroelectronics L9973 is a dual H-bridge motor driver designed for automotive and industrial applications, capable of driving two DC motors or one stepper motor with a supply voltage range of 5.5V to 36V. It integrates two full H-bridges with a continuous output current of 1.2A per channel and a peak current of 2A, making it suitable for a variety of actuator and motor control tasks. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current needed to drive an electric motor. In the system hierarchy, a motor driver sits between the logic-level controller and the motor itself, providing the necessary power amplification, protection, and control features. The L9973 belongs to the category of power management ICs, specifically motor drivers, which are essential in automotive body control modules, HVAC systems, and industrial automation. Key features of the L9973 include a wide operating voltage range, low quiescent current, and integrated protection features such as overcurrent, overtemperature, and undervoltage lockout. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure the driver. The package is a PowerSO-20, which provides excellent thermal performance for high-current applications. The L9973 uses a standard H-bridge topology with four power MOSFETs per channel, enabling bidirectional motor control. The SPI interface allows for daisy-chaining multiple devices, simplifying PCB layout in multi-motor systems. The device is designed to meet automotive quality standards, including AEC-Q100 qualification, ensuring reliable operation in harsh environments. Typical applications include automotive power windows, seat adjustment, mirror control, and HVAC flap control. The wide voltage range and robust protection make it ideal for industrial actuators and robotics as well. The SPI interface provides real-time diagnostics, which is critical for safety-critical applications. When designing with the L9973, ensure proper PCB layout with adequate copper area for heat dissipation, especially when driving high currents. The SPI lines should be kept short and shielded to avoid noise, and the supply pins should be decoupled with a 100nF ceramic capacitor close to the device.
L9973-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9973-TR is a quad half-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2A continuous per channel, with a supply voltage range of 5.5V to 36V. The device is housed in a PowerSO-20 package, providing a compact solution for driving brushed DC motors, stepper motors, and resistive loads. A half-bridge driver is a power management IC that controls the direction and speed of a DC motor by selectively connecting the motor terminals to the supply voltage or ground. In a quad half-bridge configuration, four such bridges are integrated into a single package, enabling independent control of multiple loads or the implementation of full H-bridge topologies for bidirectional motor control. This architecture is fundamental in automotive body control modules, where multiple actuators such as window lifts, mirror adjusters, and seat motors require precise and efficient switching. Key features of the L9973-TR include a low quiescent current of 50 uA in standby mode, making it suitable for always-on automotive applications. The device offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. It also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure output behavior. The PowerSO-20 package with exposed pad provides excellent thermal performance, with a thermal resistance of 35 C/W, enabling reliable operation at high ambient temperatures up to 125C. The L9973-TR utilizes a smart power technology that integrates CMOS control logic with high-current DMOS output stages. This monolithic approach reduces external component count and improves reliability compared to discrete solutions. The SPI interface supports daisy-chaining of multiple devices, simplifying wiring in multi-motor systems. The device also includes a dedicated enable pin for fast shutdown in emergency situations. Typical applications include automotive body control modules, DC motor drivers for window lifts and wiper systems, stepper motor drivers for instrument clusters, and industrial automation actuators. The wide supply voltage range and robust protection features make it ideal for 12V and 24V systems. When designing with the L9973-TR, ensure adequate PCB copper area for heat dissipation, especially when driving multiple channels at high current. The SPI interface requires proper pull-up resistors on the data lines, and the enable pin should be tied to a controlled logic signal to prevent unintended operation during power-up.
L9974 - Automotive Dual H-Bridge Driver | STMicroelectronics
The STMicroelectronics L9974 is a dual H-bridge driver designed for automotive DC motor control applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and a continuous output current of 1.2A per channel (peak 2A). The device is housed in a PowerSO-20 package with exposed pad for enhanced thermal performance. A dual H-bridge driver is a power management IC that controls the direction and speed of DC motors by selectively switching four transistors per bridge. It sits within the motor driver hierarchy: dual H-bridge driver -> motor driver -> power management IC -> semiconductor. This architecture allows bidirectional current flow through the motor, enabling forward, reverse, and braking operations. The L9974 is specifically optimized for automotive environments, meeting AEC-Q100 Grade 1 requirements for operation from -40°C to +150°C. Key features include a low quiescent current of 50 µA in standby mode, SPI interface for diagnostics and control, and integrated protection features such as overcurrent, overtemperature, and undervoltage lockout. The device also provides a current sense output for closed-loop motor control, enabling precise torque and speed regulation. The SPI interface allows real-time monitoring of fault conditions and configuration of the driver parameters, making it suitable for advanced automotive body control modules. The L9974 utilizes a smart power technology that combines CMOS control logic with high-voltage power MOSFETs on a single die. This integration reduces external component count and improves reliability. The PowerSO-20 package offers a thermal resistance of 35°C/W, allowing efficient heat dissipation in high-current applications. The device is designed to withstand load dump and reverse battery conditions, ensuring robust operation in harsh automotive environments. Typical applications include automotive HVAC actuators, headlamp leveling, mirror adjustment, and seat positioning systems. The dual H-bridge configuration allows independent control of two motors, reducing board space and system cost. The SPI interface simplifies wiring and enables advanced diagnostic features required by modern vehicle architectures. When designing with the L9974, ensure proper PCB layout with adequate copper area for thermal management. The exposed pad must be soldered to a thermal via array to achieve the specified thermal performance. Additionally, place a 100 nF ceramic capacitor close to each supply pin to suppress high-frequency noise and ensure stable operation.
L9974-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9974-TR is a quad half-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2A continuous per channel, with a supply voltage range of 5.5V to 36V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for high-current switching. A half-bridge driver is a power management IC that controls the direction and speed of DC motors by selectively connecting the motor terminals to the supply or ground. In a full H-bridge configuration, two half-bridges are combined to drive a motor bidirectionally. The L9974-TR simplifies this by integrating four half-bridges, allowing control of two DC motors or one stepper motor with minimal external components. This category sits within the broader hierarchy of motor drivers, which are essential in automotive systems such as power windows, seat adjustment, and mirror positioning. Key features of the L9974-TR include a low quiescent current of 10uA in standby mode, making it suitable for battery-powered automotive applications. It offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure output states. The PowerSO-20 package has a thermal resistance of 35 C/W, enabling efficient heat dissipation. Technically, the L9974-TR uses a smart power technology that integrates CMOS control logic with high-current DMOS output stages. This architecture provides low on-resistance (0.5 ohm typical) and fast switching, reducing power losses. The SPI interface operates at up to 5 MHz, enabling real-time monitoring and control. The device is AEC-Q100 qualified, meeting the stringent reliability standards for automotive electronics. Typical applications include automotive body control modules, DC motor drivers for power windows and mirrors, and industrial automation systems. The wide input voltage range and robust protection make it ideal for 12V and 24V systems. In a power window application, the L9974-TR drives the window motor bidirectionally, with the SPI providing diagnostic feedback for stall detection. When designing with the L9974-TR, ensure proper PCB layout with adequate copper area for thermal dissipation. Place the supply decoupling capacitor close to the VCC pin to minimize voltage spikes during switching. The SPI lines should be kept short and shielded to avoid noise coupling.
L9975 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9975 is an automotive-grade dual H-bridge motor driver designed for DC motor control in automotive applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and output current up to 1.2A per channel. The device is housed in a PowerSO-20 package, providing robust thermal performance for automotive environments. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current needed to drive a motor. In the system hierarchy, the L9975 sits between the MCU and the motor, acting as a power amplifier and protection interface. It is a key component in automotive body control modules, where it controls window lifts, mirror adjustment, and seat positioning. Key features of the L9975 include a low quiescent current of 10 uA in standby mode, making it suitable for always-on automotive modules. It offers overcurrent, overtemperature, and short-circuit protection, ensuring reliable operation in harsh environments. The device also features a serial peripheral interface (SPI) for diagnostics and control, allowing the MCU to read fault status and configure the driver. The L9975 uses a standard H-bridge topology with integrated freewheeling diodes, eliminating the need for external clamping diodes. Its SPI interface enables advanced diagnostics, including open-load detection and overcurrent reporting. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive electronics. Typical applications include automotive window lift systems, mirror adjustment, seat positioning, and HVAC damper control. The wide supply voltage range and robust protection make it ideal for direct connection to the vehicle battery, withstanding load-dump and cold-crank transients. When designing with the L9975, ensure proper PCB layout with adequate copper area for thermal dissipation. The PowerSO-20 package has a thermal resistance of 35 C/W, so at maximum current and high ambient temperatures, a heatsink or large copper pour is recommended. Additionally, place the SPI lines with proper filtering to avoid noise coupling from the motor lines.
L9975-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9975-TR is a monolithic quad half-bridge driver designed by STMicroelectronics for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2 A continuous per channel, with a supply voltage range of 5.5 V to 36 V. The device is housed in a 28-pin SOIC (SO-28) package with an exposed pad for enhanced thermal performance, and is qualified to AEC-Q100 Grade 1 for operation from -40°C to +150°C junction temperature. A half-bridge driver is a power management IC that contains two power switches (high-side and low-side) per output, allowing bidirectional current flow through a load connected between the output and ground or supply. This topology enables forward, reverse, and braking control of DC motors, as well as driving resistive, inductive, or capacitive loads. The L9975-TR belongs to the family of motor driver ICs, which are essential in automotive body electronics, HVAC actuators, and industrial automation. Key features include a low quiescent current of 50 µA in standby mode, making it suitable for always-on automotive modules. Each output has built-in overcurrent protection, thermal shutdown, and a diagnostic output that reports fault conditions via a serial interface. The device also features a SPI-compatible control interface for configuring outputs and reading status, enabling precise motor control and system monitoring. The L9975-TR uses a smart power technology that integrates CMOS control logic with DMOS power stages, providing efficient switching with low RDS(on) of 0.5 Ω per switch. This architecture minimizes power dissipation and supports PWM frequencies up to 20 kHz for quiet motor operation. The device includes a charge pump for high-side gate drive, allowing operation with a single supply without external bootstrap components. Typical applications include automotive HVAC flap control, headlamp leveling, mirror adjustment, and industrial valve actuation. The wide supply range and robust protection make it ideal for 12 V and 24 V systems. In automotive environments, the AEC-Q100 qualification ensures reliability under extreme temperature and vibration. When designing with the L9975-TR, ensure proper PCB layout with adequate copper area for the exposed pad to dissipate heat. The SPI interface requires careful timing and pull-up resistors on the data lines. For high-current loads, consider external freewheeling diodes to protect the outputs during inductive switching.
L9976 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9976 is an automotive-grade dual H-bridge motor driver designed for DC motor control in body and chassis applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and a continuous output current of up to 1.2A per channel. The device is housed in a 28-pin PowerSO-28 package with an exposed pad for enhanced thermal performance. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher-current, higher-voltage signals needed to drive electric motors. In automotive systems, motor drivers are essential for functions such as window lifts, mirror adjustment, seat positioning, and HVAC actuators. The L9976 sits within the power management and actuation hierarchy, bridging the digital control domain (MCU) and the electromechanical domain (motors). Key features of the L9976 include a low RDS(on) of 0.5 ohm per switch, which minimizes power dissipation and improves efficiency. It provides overcurrent, overtemperature, and undervoltage protection, ensuring robust operation in harsh automotive environments. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure operating modes. The PowerSO-28 package offers a thermal resistance of 35 C/W, enabling reliable operation at high ambient temperatures. The L9976 utilizes a standard H-bridge topology with integrated freewheeling diodes, eliminating the need for external clamping components. The SPI interface supports daisy-chaining of multiple devices, simplifying PCB layout in multi-motor systems. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive applications. Typical applications include automotive body control modules, power window lift systems, mirror adjustment units, and HVAC actuator control. The wide supply voltage range accommodates both 12V and 24V automotive electrical systems, and the low quiescent current of 10 uA in standby mode helps reduce battery drain when the vehicle is off. When designing with the L9976, ensure adequate PCB copper area for thermal dissipation, especially when driving motors at high currents. The SPI interface should be properly configured for fault monitoring, and the supply pins must be decoupled with a 100nF ceramic capacitor close to the device to suppress switching noise.
L9976-TR - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The L9976-TR is an automotive-grade dual H-bridge motor driver IC from STMicroelectronics, designed for driving DC motors and stepper motors in automotive applications. It integrates two full H-bridges capable of delivering continuous output current up to 1.2 A per channel, with a supply voltage range of 5.5 V to 36 V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for demanding automotive environments. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher-current, higher-voltage signals needed to drive electric motors. Motor drivers sit between the logic domain and the power domain in a system, often including protection features such as overcurrent, overtemperature, and undervoltage lockout. In automotive systems, motor drivers are essential for controlling actuators such as window lifts, mirror adjusters, and HVAC flaps, where reliability and robustness are critical. Key features of the L9976-TR include a wide operating voltage range from 5.5 V to 36 V, making it suitable for both 12 V and 24 V automotive electrical systems. Each H-bridge can deliver up to 1.2 A continuous current, with peak current capability of 2 A. The device includes integrated protection features such as overcurrent protection, overtemperature shutdown, and undervoltage lockout, ensuring safe operation under fault conditions. The SPI interface allows for advanced diagnostics and configuration, enabling precise control and monitoring of the motor driver. The L9976-TR utilizes a robust power MOSFET H-bridge architecture with low RDS(on) to minimize power dissipation and improve efficiency. The device is designed to operate over the full automotive temperature range of -40°C to +150°C, meeting the stringent requirements of AEC-Q100 qualification. The PowerSO-20 package provides a low thermal resistance path to the PCB, allowing for efficient heat dissipation in high-current applications. Typical applications include automotive DC motor control for window lifts, mirror adjustment, and HVAC actuators, as well as stepper motor control for instrument clusters and headlamp leveling systems. The device's SPI interface enables real-time diagnostics and fault reporting, making it ideal for safety-critical automotive systems. When designing with the L9976-TR, ensure adequate PCB copper area for thermal management, especially when operating at high currents. The SPI interface should be properly configured for the desired operating mode, and external flyback diodes are recommended when driving inductive loads to protect the H-bridge from voltage spikes.
L9977 - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9977 is an automotive-grade dual H-bridge driver IC from STMicroelectronics, designed for controlling DC motors and inductive loads in automotive body applications. It integrates two full H-bridges capable of driving up to 5.5 A continuous current per channel, with a wide operating supply voltage range of 5.5 V to 36 V. The device is housed in a PowerSO-36 package, providing excellent thermal performance for high-current applications. An H-bridge motor driver is a power management IC that allows bidirectional control of a DC motor by selectively switching four transistors in an 'H' configuration. It is a fundamental building block in automotive electronics, enabling functions such as window lift, seat adjustment, and mirror positioning. The L9977 belongs to the family of motor drivers, which are part of the broader power management IC category, and it is specifically optimized for the harsh automotive environment. Key features of the L9977 include a low quiescent current of 50 µA in standby mode, making it suitable for always-on automotive modules. It offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in fault conditions. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to monitor and configure the driver in real time. The PowerSO-36 package with exposed pad ensures efficient heat dissipation, enabling continuous operation at high currents. From a technical perspective, the L9977 utilizes a smart power technology that integrates logic, protection, and power stages on a single die. This reduces external component count and improves reliability. The SPI interface supports daisy-chaining of multiple devices, simplifying PCB layout in multi-motor systems. The device is AEC-Q100 qualified, meeting the stringent quality and reliability standards required for automotive applications. Typical applications include automotive body control modules, power window lift systems, seat position adjustment, and mirror folding. The L9977's ability to handle high currents and its robust protection features make it ideal for driving DC motors in these systems. Additionally, its low standby current is critical for battery-powered vehicles to minimize parasitic drain. When designing with the L9977, ensure proper PCB layout with adequate copper area for thermal management, especially when driving high currents continuously. The SPI interface should be configured correctly to enable fault reporting and diagnostic functions. Also, consider adding external flyback diodes or using the integrated freewheeling diodes to protect against inductive load transients.
L9977-TR - Dual Half Bridge Driver, 1.2A, 7-16.5V | STMicroelectronics
The L9977-TR is a monolithic integrated dual half bridge driver from STMicroelectronics, designed in BCD technology to drive various loads including DC motors. It is optimized for automotive electronics environmental conditions, delivering robust performance in harsh operating environments. The device provides two half-bridge outputs with a typical ON-resistance of 0.7 ohm and an output current capability of ±1.2 A, operating from a supply voltage range of 7 V to 16.5 V. The L9977-TR is available in a 20-pin SOIC (SO-20) package, suitable for surface-mount assembly. A dual half bridge driver is a power management IC that contains two independent half-bridge output stages, each capable of sourcing and sinking current to drive inductive or resistive loads such as DC motors, solenoids, and relays. In the system hierarchy, a dual half bridge driver falls under motor drivers, which are a subset of power management ICs, ultimately part of the broader semiconductor category. This component type is essential in automotive body control modules, where it controls actuators like window lifts, mirror adjustments, and seat positioning. Key features of the L9977-TR include half-bridge outputs with typical RON of 0.7 ohm, output current capability of ±1.2 A, operating supply voltage from 7 V to 16.5 V, and supply overvoltage protection for VVS up to 40 V. The device also features very low quiescent current, making it suitable for always-on automotive applications. The BCD (Bipolar-CMOS-DMOS) technology combines the advantages of bipolar, CMOS, and DMOS processes, enabling high-voltage capability, low power consumption, and high current drive in a single monolithic IC. The L9977-TR is designed for automotive electronics, withstanding the demanding environmental conditions such as wide temperature ranges, supply transients, and electromagnetic interference. The overvoltage protection up to 40 V ensures the device can survive load dump and other supply transients common in automotive power systems. The low ON-resistance minimizes power dissipation, improving thermal performance and system efficiency. Typical applications include automotive body control modules, DC motor drivers for window lifts and mirror adjustment, and relay drivers. The device's ability to drive inductive loads makes it suitable for solenoid and actuator control. In a typical automotive body control module, the L9977-TR interfaces directly with a microcontroller, receiving logic-level control signals and driving the load with the required current and voltage. When designing with the L9977-TR, ensure adequate PCB copper area for thermal dissipation, especially when driving loads near the maximum current rating. The supply voltage must be decoupled with a capacitor close to the VCC pin to handle transient currents. The logic inputs are compatible with 5V microcontrollers, but verify the input thresholds against the specific microcontroller's output levels.
L9979-TR - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9979-TR is an automotive-grade dual H-bridge driver IC from STMicroelectronics, designed for controlling DC motors and inductive loads in 12V automotive systems. It integrates two independent H-bridge outputs capable of driving continuous currents up to 1.2A per channel, with a peak current capability of 2A. The device operates from a supply voltage range of 5.5V to 36V, making it suitable for a wide range of automotive power rails. It is available in a PowerSO-20 package, which provides excellent thermal performance for high-current applications. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each capable of driving a DC motor bidirectionally or controlling two separate loads. It is a type of motor driver, which falls under the broader category of power management ICs. The L9979-TR integrates the power stage, control logic, and protection features, simplifying the design of motor control systems in vehicles. Key features of the L9979-TR include a low quiescent current of 10 µA in standby mode, which is critical for battery-powered automotive applications. It also features overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring robust operation in harsh environments. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of the automotive industry. Its SPI interface allows for advanced diagnostics and control, enabling real-time monitoring of load conditions and fault status. The L9979-TR uses a standard CMOS process technology, which balances performance and cost. The integrated protection features reduce the need for external components, saving board space and improving system reliability. The device's ability to operate at high temperatures (up to 150°C junction) makes it suitable for under-hood applications where ambient temperatures can be extreme. Typical applications include automotive HVAC actuators, mirror adjustment, seat positioning, and other DC motor control functions. The L9979-TR's dual H-bridge configuration allows it to control two motors independently, making it ideal for applications requiring multiple actuators. Its SPI interface enables precise control and diagnostics, which is essential for advanced automotive systems. When designing with the L9979-TR, it is important to ensure proper PCB layout to minimize parasitic inductance and resistance in the power path. Adequate decoupling capacitors should be placed close to the supply pins to handle transient currents. The thermal pad should be connected to a large copper area to dissipate heat effectively, especially when driving high currents continuously.
L99ASC03TR - 3-Phase BLDC Motor Pre-Driver | STMicroelectronics
The STMicroelectronics L99ASC03TR is a multifunctional system IC designed for three-phase brushless DC (BLDC) motor control applications, primarily targeting automotive systems. It integrates a flexible gate driver unit (GDU), a 5V low-dropout voltage regulator (LDO) capable of delivering up to 200 mA, and a 3.3V/5V reference voltage, all in a 48-pin LQFP-EP (7x7) package. The device operates from a wide input voltage range of 5.5V to 28V, making it suitable for both 12V and 24V automotive electrical systems. A brushless DC (BLDC) motor pre-driver is a specialized motor control IC that sits between a microcontroller (MCU) and the external power stage (MOSFETs or IGBTs). It translates low-voltage logic-level signals from the MCU into high-current gate drive signals that control the commutation and speed of a BLDC motor. In the system hierarchy, a BLDC motor pre-driver is a type of motor driver IC, which falls under power management ICs, ultimately part of the broader semiconductor category. The L99ASC03TR integrates the gate driver, voltage regulation, and protection features, reducing external component count and simplifying PCB design. Key features include a wide operating voltage range from 5.5V to 28V, a programmable gate drive current for optimized switching performance, and a built-in 5V LDO with 200 mA output capability. The device also provides a 3.3V/5V reference voltage with ±1% accuracy, SPI interface for configuration and diagnostics, and comprehensive protection features such as overcurrent, overvoltage, undervoltage, and thermal shutdown. These features ensure robust operation in harsh automotive environments. The L99ASC03TR employs a flexible architecture that supports both sensored and sensorless BLDC motor control. The gate driver unit can be configured for different external MOSFET/IGBT combinations, and the SPI interface allows real-time adjustment of gate drive strength and protection thresholds. The integrated LDO and reference voltage eliminate the need for separate power management components, reducing system cost and board space. Typical applications include automotive engine cooling fans, oil pumps, water pumps, HVAC blowers, and industrial BLDC motor drives. The wide input voltage range and automotive-grade robustness make it suitable for 12V and 24V systems. The device is AEC-Q100 qualified, ensuring reliability for automotive use. When designing with the L99ASC03TR, ensure proper PCB layout with adequate copper area for thermal dissipation, and place decoupling capacitors close to the VCC and LDO output pins. The SPI interface should be configured correctly to set the desired gate drive current and protection thresholds for the specific motor application.
L99SM81V - Automotive Stepper Motor Driver | STMicroelectronics
The L99SM81V is an automotive-grade integrated driver for bipolar two-phase stepper motors, designed by STMicroelectronics for precise current-controlled micro-stepping with programmable amplitude. It integrates a microstepping controller with a power stage capable of driving up to 1.2 A per phase, and operates from a supply voltage range of 6 V to 28 V, making it suitable for direct connection to automotive battery rails. The device is available in a 40-pin QFN (6x6 mm) package and is AEC-Q100 qualified for automotive applications. A stepper motor driver is a power management IC that converts digital step and direction commands into the precise current sequences needed to rotate a stepper motor in controlled increments. It sits between a microcontroller and the motor, translating low-power logic signals into high-current drive signals. In the system hierarchy, a stepper motor driver is a type of motor driver, which falls under power management ICs, which are part of the broader category of analog and mixed-signal semiconductors. Key features of the L99SM81V include a programmable microstepping resolution up to 1/16 step, integrated current sensing with no external sense resistors, and a SPI interface for configuration and diagnostics. It also features overcurrent, overtemperature, and undervoltage protection, along with a low quiescent current in standby mode, which is critical for automotive battery conservation. The device is AEC-Q100 qualified, ensuring reliability across the -40°C to +150°C junction temperature range. The L99SM81V uses a proprietary current-control architecture that combines a constant-current chopper with a programmable decay mode, enabling smooth and quiet motor operation. The integrated current sensing eliminates the need for external sense resistors, reducing BOM cost and PCB area. The SPI interface allows real-time monitoring of fault conditions and precise adjustment of motor parameters, making it a flexible solution for complex automotive motion control. Typical applications include headlamp leveling systems, where precise positioning is required for optimal beam alignment, HVAC flap control for cabin comfort, and instrument cluster stepper motors for gauge indication. The wide supply voltage range and robust protection features make it ideal for direct battery connection in 12 V automotive systems. When designing with the L99SM81V, ensure adequate PCB copper area for thermal dissipation, especially when driving high currents continuously. The SPI interface should be isolated from high-current traces to minimize noise coupling. Proper decoupling capacitors on the supply pins are essential to maintain stable operation during motor transients.
VNH3SP30 - 30A Full-Bridge Motor Driver | STMicroelectronics
The VNH3SP30 is a fully integrated H-bridge motor driver from STMicroelectronics, designed for a wide range of automotive and industrial applications. It incorporates a dual monolithic high-side driver (HSD) and two low-side switches, providing a complete bridge driver solution in a MultiPowerSO-30 package. The device is capable of driving DC motors with continuous currents up to 30A, making it suitable for high-power actuation systems. A full-bridge motor driver, also known as an H-bridge, is a power electronics circuit that allows a DC motor to be driven in both directions (forward and reverse) by controlling the polarity of the voltage applied across the motor terminals. It consists of four switching elements (typically MOSFETs or IGBTs) arranged in an 'H' configuration. The VNH3SP30 integrates these switches along with protection and diagnostic features, simplifying the design of motor control systems. In the hierarchy of motor control, the H-bridge driver sits between the microcontroller (which generates PWM signals) and the motor itself, translating low-power logic signals into high-current drive capability. Key features of the VNH3SP30 include a wide operating voltage range (5.5V to 36V), a maximum output current of 30A, and a low on-resistance (RDS(on)) of 0.05 ohms per switch, which minimizes power dissipation. The device supports both parallel and PWM control modes, allowing flexible speed and direction control. It also includes built-in protection features such as undervoltage lockout, overcurrent protection, and thermal shutdown, ensuring reliable operation in harsh environments. The VNH3SP30 is built using ST's proprietary VIPower M0 technology, which integrates the power MOSFETs and control logic on a single chip. This monolithic approach reduces parasitic inductance and improves switching performance compared to discrete solutions. The MultiPowerSO-30 package provides excellent thermal performance, with a thermal resistance of 1.5°C/W, enabling the driver to handle high currents without external heatsinks in many applications. Typical applications include automotive systems such as power windows, seat adjusters, and wiper motors, as well as industrial automation, robotics, and electric vehicles. The device's ability to handle 30A makes it ideal for driving large DC motors in actuators, pumps, and conveyor systems. Its automotive-grade qualification (AEC-Q100) ensures reliability in demanding environments. When designing with the VNH3SP30, it is essential to provide adequate bulk capacitance on the power supply to handle the high inrush currents of DC motors. Additionally, proper PCB layout with wide copper traces and thermal vias is critical to dissipate heat effectively. The device's PWM input allows for speed control, but the PWM frequency should be chosen carefully to balance switching losses and motor noise.
VNH5019 - 30A Automotive H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics VNH5019 is a fully integrated automotive-grade H-bridge motor driver designed for high-current DC motor control. It integrates a dual monolithic high-side driver and two low-side switches using ST's proprietary VIPower M0 technology, which combines a true Power MOSFET with an intelligent signal/protection circuit on the same die. The device is assembled in a MultiPowerSO-30 package with electrically isolated lead-frames, enabling efficient thermal management and high-current operation. An H-bridge motor driver is a power management IC that allows a DC motor to be driven in both directions (forward and reverse) by controlling the polarity of the voltage applied across the motor terminals. It sits between a microcontroller and the motor, translating low-power logic signals into high-current switching actions. The VNH5019 belongs to the broader category of motor drivers, which are essential in robotics, automotive, and industrial automation systems where precise speed and direction control are required. Key features of the VNH5019 include a wide operating voltage range of 5.5V to 24V, a continuous output current of 12A with a peak capability of 30A, and an ultra-low on-resistance of 18mOhm per switch. The device supports PWM frequencies up to 20kHz (ultrasonic), enabling silent motor operation. It also provides a current sense output that delivers an analog voltage proportional to the motor current, facilitating closed-loop control and overcurrent monitoring. The VNH5019 integrates comprehensive protection features, including reverse-voltage protection, over-voltage protection, under-voltage lockout, overcurrent protection, and thermal shutdown. These protections ensure robust operation in harsh automotive and industrial environments. The device operates with logic levels from 2.5V to 5V, making it compatible with both 3.3V and 5V microcontrollers. The MultiPowerSO-30 package provides excellent thermal performance, with a junction-to-ambient thermal resistance of [DATA_NEEDED: thermal resistance] C/W, allowing continuous operation at high currents with appropriate PCB copper area. Typical applications include automotive power windows, seat adjusters, and wiper motors, as well as robotics, automated guided vehicles (AGVs), and industrial actuators. The VNH5019 is also widely used in educational robotics platforms and hobbyist motor driver carriers, such as those from Pololu. Its combination of high current capability, integrated protection, and ease of use makes it a preferred choice for designers requiring a reliable, compact H-bridge solution. When designing with the VNH5019, ensure adequate PCB copper area for thermal dissipation, especially when operating at continuous currents above 6A. The current sense output should be connected to an analog-to-digital converter (ADC) input for accurate motor current monitoring. Additionally, proper decoupling capacitors (e.g., 100nF ceramic and 10uF electrolytic) should be placed close to the VCC and GND pins to suppress voltage transients during PWM switching.
VNH5050A-E - 50A Automotive H-Bridge Driver | STMicroelectronics
The STMicroelectronics VNH5050A-E is a fully integrated H-bridge motor driver designed for high-current automotive and industrial applications. It delivers a continuous output current of 50 A and a peak current of 70 A, operating from a supply voltage range of 5.5 V to 18 V. The device is housed in a 12-pin MultiPowerSO-30 package with an exposed pad for enhanced thermal performance. An H-bridge motor driver is a power integrated circuit that controls the direction and speed of a DC motor by selectively switching four transistors in an H-shaped configuration. It is a type of motor driver IC, which falls under the broader category of power management ICs. The VNH5050A-E integrates the power stage, gate drivers, and protection circuitry in a single package, simplifying PCB design and reducing component count. Key features include a low ON-resistance of 20 mOhm per switch, which minimizes power dissipation and improves efficiency. The device provides a 5 V logic supply output for external circuitry, and includes a current sense output proportional to the motor current, enabling closed-loop control. It also features a diagnostic output for fault reporting, and a PWM input for speed control up to 20 kHz. The VNH5050A-E uses STMicroelectronics' VIPower M0 technology, which integrates a double-diffused MOS (DMOS) power stage with CMOS control logic. This architecture provides robust switching performance and high reliability under harsh automotive conditions. The device includes comprehensive protection features such as undervoltage lockout, overvoltage clamp, thermal shutdown, and load current limitation. Typical applications include automotive power windows, sunroofs, seat adjusters, and DC motor control in industrial automation. The high current capability and wide supply range make it suitable for driving brushed DC motors in body control modules and actuator systems. When designing with this device, ensure adequate PCB copper area for heat dissipation, as the thermal resistance (junction-to-ambient) is 35 C/W. The exposed pad must be soldered to a large copper pour to maintain junction temperature below the maximum rating of 150 C.
VNH5180A-E - 41A Automotive H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics VNH5180A-E is a fully integrated H-bridge motor driver designed for automotive and industrial DC motor control applications. It delivers a continuous output current of up to 41A and operates from a supply voltage range of 5.5V to 18V, making it suitable for high-power brushed DC motors, actuators, and power steering systems. The device is housed in a 16-pin PowerSSO-36 package with an exposed thermal pad, enabling efficient heat dissipation in compact designs. An H-bridge motor driver is a power management IC that controls the direction and speed of a DC motor by selectively switching four transistors in an H configuration. It allows bidirectional current flow through the motor, enabling forward, reverse, and braking operations. The VNH5180A-E integrates the power stage, gate drivers, and protection circuitry into a single package, simplifying PCB design and reducing component count compared to discrete implementations. Key features include a low on-resistance of 20 mOhm per switch, which minimizes power losses and heat generation at high currents. The device provides a PWM frequency range up to 20 kHz, allowing precise speed control. It includes comprehensive protection features such as undervoltage lockout, overvoltage clamp, thermal shutdown, and load current limitation. The VNH5180A-E also features a diagnostic output that reports fault conditions, enhancing system reliability. The VNH5180A-E utilizes a proprietary VIPower M0-5 technology, which integrates the power MOSFETs and control logic on a single die. This architecture ensures fast switching and robust operation under harsh automotive conditions. The device is AEC-Q100 qualified, meeting the stringent reliability requirements for automotive applications. Its 16-pin PowerSSO-36 package provides excellent thermal performance with a junction-to-ambient thermal resistance of 30 C/W, allowing operation at high ambient temperatures with appropriate PCB copper area. Typical applications include automotive power windows, seat adjusters, wiper motors, and industrial automation systems. The device's high current capability and robust protection make it ideal for driving large brushed DC motors in electric power steering (EPS) and engine cooling fans. In automotive body control modules, the VNH5180A-E simplifies motor control by integrating all necessary functions, reducing board space and improving reliability. When designing with the VNH5180A-E, ensure adequate PCB copper area for heat dissipation, especially at continuous currents above 20A. The PWM input should be driven with a proper dead-time to prevent shoot-through. The diagnostic output can be monitored by a microcontroller to detect faults and implement safe shutdown procedures.
VNH7070ASTR - 15A Automotive H-Bridge Driver | STMicroelectronics
The VNH7070ASTR is a full H-bridge motor driver from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates a dual monolithic high-side driver and two low-side switches in a compact PowerSSO-36 package, delivering up to 15A continuous output current. The device operates from a 4V to 28V supply voltage range, making it suitable for 12V and 24V automotive systems. An H-bridge motor driver is a power integrated circuit that controls the direction and speed of a DC motor by selectively activating four transistors in a bridge configuration. It sits within the power management IC hierarchy, specifically under motor drivers, which are essential for converting low-power control signals into high-current drive for electromechanical actuators. The VNH7070ASTR integrates the control logic, gate drivers, and power MOSFETs into a single package, simplifying PCB design and reducing component count. Key features include a low ON-resistance of 40 mOhm per switch, which minimizes power dissipation and improves thermal performance. The device includes a current sense output (CS) that provides a proportional analog voltage for closed-loop current monitoring, enabling precise torque control. It also features a diagnostic output (DIAG) that reports overcurrent, overtemperature, and open-load faults, enhancing system reliability. The integrated PWM input allows speed control up to 20 kHz, and the device supports both forward, reverse, brake, and high-impedance states. The VNH7070ASTR uses STMicroelectronics' VIPower M0 technology, which combines a robust power MOSFET process with advanced protection features. The device includes undervoltage lockout, overvoltage clamp, and thermal shutdown with automatic restart, ensuring safe operation under fault conditions. The PowerSSO-36 package with exposed pad provides excellent thermal dissipation, with a thermal resistance of 30 C/W, enabling continuous operation at high currents with proper PCB copper area. Typical applications include automotive power windows, sunroofs, seat adjusters, and DC motor control in industrial automation. The device is also suitable for robotics, pumps, and fans where bidirectional motor control with current sensing is required. Its wide supply range and robust protection make it ideal for harsh environments. When designing with the VNH7070ASTR, ensure adequate PCB copper area for thermal management, especially at high currents. The current sense pin requires an external resistor to set the gain, and the diagnostic pin should be monitored by the microcontroller for fault handling. Proper decoupling capacitors on the supply and logic pins are essential for stable operation.