MCT8316A - 40V, 8A Sensorless BLDC Driver | Texas Instruments
MPN: MCT8316A β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.52 | $1,260.00 |
| 1,000 | $2.24 | $2,240.00 |
Drop-in alternatives for MCT8316A β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
MCT8316A1VRGFR
β Drop-Inπ Reference alternative (not in catalog)
MCT8316AT
β Drop-Inπ Reference alternative (not in catalog)
MCT8316Z
β Drop-Inπ Reference alternative (not in catalog)
MCF8316A
β Drop-Inπ Reference alternative (not in catalog)
DRV10987
β Drop-Inπ Reference alternative (not in catalog)
MCT8316A Maximum Ratings & Electrical Characteristics
| Motor Type | 3-Phase BLDC |
| Control Interface | I2C (MCT8316AV) / Hardware (MCT8316AT) |
| Supply Voltage (VM) | 4.5 V to 40 V |
| Peak Current | 8 A |
| Continuous Current | [DATA_NEEDED: continuous current] |
| Electrical Frequency | Up to 3 kHz |
| Startup Time | <50 ms |
| Commutation Method | Sensorless Trapezoidal |
| Rotor Position Sensing | Back-EMF |
| Output Drivers | 3x NMOS Half-Bridge |
| DAC Outputs | 2x 12-bit (DACOUT1, DACOUT2) |
| Protection Features | UVLO, OCP, OTW/OTSD, AVS |
| Package | 40-VQFN (7x5) |
| Operating Temperature | -40C to +125C |
| RoHS Status | Compliant |
MCT8316A Pin Configuration
| Pin 1 | VM β Motor supply voltage |
| Pin 2 | GND β Ground |
| Pin 3 | OUT1 β Phase A output |
| Pin 4 | OUT2 β Phase B output |
| Pin 5 | OUT3 β Phase C output |
| Pin 6 | VCC β Logic supply |
| Pin 7 | SCL β I2C clock (I2C variant) |
| Pin 8 | SDA β I2C data (I2C variant) |
| Pin 9 | DACOUT1 β 12-bit DAC output 1 |
| Pin 10 | DACOUT2 β 12-bit DAC output 2 |
| Pin 11 | EN β Enable pin |
| Pin 12 | nFAULT β Fault indicator |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
MCT8316A is suitable for 6 applications: Power Tools, Vacuum Robots, Drones, Fans and Pumps, Industrial Automation, Automotive (Q1 variant).
Power Tools
The MCT8316A's 8A peak current and fast startup (<50ms) make it ideal for cordless power tools like drills and impact drivers. Its sensorless trapezoidal control eliminates Hall sensors, reducing cost and improving reliability in high-vibration environments. The 40V rating supports 12V to 24V battery packs, and the integrated FETs simplify PCB design. With code-free operation, firmware development is minimized, accelerating time-to-market.
Recommended
Vacuum Robots
In robotic vacuum cleaners, the MCT8316A drives the main brush and wheel motors with its 8A peak current and sensorless trapezoidal control. The fast startup enables quick response to navigation commands, while the low-noise operation is enhanced by active demagnetization. The I2C interface allows real-time monitoring and tuning of motor parameters, optimizing cleaning efficiency. The compact 40-VQFN package fits space-constrained designs.
Recommended
Drones
The MCT8316A is suitable for drone propulsion systems, providing up to 8A peak current for BLDC motors. Its high electrical frequency capability (up to 3kHz) supports high-speed propellers, while the fast startup (<50ms) enables rapid throttle response. The sensorless control reduces weight by eliminating Hall sensors, and the integrated FETs minimize external components. The device's protections ensure reliable operation in demanding flight conditions.
Recommended
Fans and Pumps
For fans and pumps, the MCT8316A provides efficient sensorless trapezoidal control with 8A peak current capability. Its code-free operation simplifies design, while the hardware interface variant (MCT8316AT) allows standalone operation without software. The device's active demagnetization reduces power losses, improving efficiency. The 40V rating supports a wide range of industrial and consumer applications, and the integrated protections ensure long-term reliability.
Recommended
Industrial Automation
In industrial automation, the MCT8316A drives BLDC motors in conveyors, actuators, and robotic arms. Its 8A peak current and 40V rating handle various motor sizes, while the sensorless control reduces maintenance by eliminating Hall sensors. The I2C interface enables precise speed control and diagnostics, and the device's protections (UVLO, OCP, OTSD) enhance system safety. The compact package allows integration into space-limited control cabinets.
Recommended
Automotive (Q1 variant)
The MCT8316A-Q1 is AEC-Q100 qualified for automotive applications such as electric pumps, cooling fans, and seat adjusters. It provides 8A peak current and 40V rating, suitable for 12V automotive systems. The sensorless trapezoidal control eliminates Hall sensors, improving reliability in harsh environments. The device's integrated protections and wide temperature range (-40C to +125C) ensure robust operation. The hardware interface variant simplifies integration with existing ECUs.
Recommended
Recommended Products Summary
Engineering reference data for MCT8316A β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCT8316A1VRGFR | MCT8316AT | MCT8316Z | MCF8316A | DRV10987 |
|---|---|---|---|---|---|---|
| Package | 40-VQFN (7x5) | 40-VQFN (7x5) | 40-VQFN (7x5) | 40-VQFN (7x5) | 40-VQFN (7x5) | 40-VQFN (7x5) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Control Algorithm | Sensorless Trapezoidal | Sensorless Trapezoidal | Sensorless Trapezoidal | Sensorless Trapezoidal | Field-Oriented Control | Sensorless Sinusoidal |
| Interface | I2C / Hardware | I2C | Hardware | I2C / Hardware | I2C | I2C |
| Peak Current | 8 A | 8 A | 8 A | 8 A | 8 A | 2 A |
| Supply Voltage | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V |
| Startup Time | <50 ms | <50 ms | <50 ms | <50 ms | [DATA_NEEDED] | [DATA_NEEDED] |
| DAC Outputs | 2x 12-bit | 2x 12-bit | 2x 12-bit | 2x 12-bit | 2x 12-bit | None |
Key Differentiators
- Integrated FETs with 8A peak current (vs DRV10987)
- Dual interface (I2C and hardware) (vs MCF8316A)
- Fast startup (<50ms) (vs DRV10987)
Design Notes
Ensure adequate bulk capacitance on the VM pin to handle peak currents of up to 8A. A minimum of 10uF ceramic plus 100uF electrolytic is recommended to minimize voltage transients during motor commutation. Place capacitors close to the VM and GND pins to reduce parasitic inductance.
Use short, wide traces for motor phase outputs (OUT1, OUT2, OUT3) to minimize inductance and EMI. The exposed thermal pad should be soldered to a large copper pour with multiple vias to enhance heat dissipation. Follow the layout guidelines in the TI datasheet for optimal performance.
Do not exceed the absolute maximum supply voltage of 40V. Ensure the logic supply (VCC) is properly decoupled with a 0.1uF ceramic capacitor. For the I2C variant, pull-up resistors are required on SCL and SDA lines. Verify the correct variant (I2C vs hardware) for your application to avoid configuration issues.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualified for Q1 variant only.
