STMicroelectronics

L9952 - Automotive Solenoid Driver | STMicroelectronics | Power Management

Name: L9952
Brand: STMicroelectronics
Price: 3.1 USD
Availability: InStock

MPN: L9952 ✓ Active

In Stock Ships in 1-3 business days

4.5 V to 28 V Vdss 5 A Id 35 °C/W Rds(on) PowerSO-20 Package

From $3.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-17

Volume Pricing

Qty	Unit Price	Extended
1	$4.85	$4.85
10	$4.36	$43.60
100	$3.88	$388.00
500	$3.49	$1,745.00
1,000	$3.1	$3,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for L9952 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

L9952GXP

⚡ Same Package

📦 PowerSO-36

Power Management System IC with two low drop regulators, different package (PowerSO-36)

📋 Reference alternative (not in catalog)

L9952XP

✅ Drop-In

📦 PowerSO-20

Door actuator driver, same package, pin-compatible

📋 Reference alternative (not in catalog)

L9952GXPTR

⚡ Same Package

📦 PowerSO-36

Tape and reel variant of L9952GXP, different package

📋 Reference alternative (not in catalog)

L9952 Maximum Ratings & Electrical Characteristics

Supply Voltage Range	4.5 V to 28 V
Continuous Output Current	5 A
Saturation Voltage	1.5 V at 5 A
Standby Current	10 µA
Package	PowerSO-20
Thermal Resistance	35 °C/W
Operating Temperature	-40°C to +150°C
AEC-Q100 Qualification	Qualified
Interface	SPI
Protection Features	Overcurrent, Overtemperature, Short-circuit
Diagnostic Output	Yes
Mounting Type	Surface Mount
RoHS Status	Compliant
Output Configuration	High-side, Low-side, H-bridge
Application	Automotive Solenoid and Relay Driving

L9952 Pin Configuration

Pin 1	VCC — Power supply input
Pin 2	GND — Ground
Pin 3	OUT1 — High-side driver output
Pin 4	OUT2 — Low-side driver output
Pin 5	OUT3 — H-bridge output
Pin 6	OUT4 — H-bridge output
Pin 7	SPI_CLK — SPI clock input
Pin 8	SPI_CS — SPI chip select
Pin 9	SPI_MOSI — SPI data input
Pin 10	SPI_MISO — SPI data output
Pin 11	DIAG — Diagnostic output
Pin 12	EN — Enable input

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

L9952 is suitable for 6 applications: Automotive Transmission Control Units, Engine Management Systems, Body Control Modules, Industrial Automation, Fuel Injection Systems, Relay Driving.

🚗

Automotive Transmission Control Units

The L9952 is used in automotive transmission control units to drive solenoids that control gear shifting. Its high output current of 5A and robust protection features ensure reliable operation in harsh automotive environments. The SPI interface allows precise control and diagnostics, enabling efficient transmission management. The wide supply voltage range of 4.5V to 28V accommodates both 12V and 24V systems, making it versatile for various vehicle platforms.

Recommended

L9952GXP (Power management system IC with additional regulators) L9952XP (Door actuator driver variant)

🚗

Engine Management Systems

In engine management systems, the L9952 drives fuel injectors and other solenoids. Its low saturation voltage of 1.5V at 5A minimizes power dissipation, improving system efficiency. The overcurrent and overtemperature protection prevent damage to the IC and the load. The AEC-Q100 qualification ensures reliability in the demanding conditions of an engine compartment, where temperatures can exceed 100°C.

Recommended

L9952GXP (Power management system IC for engine control) L9952XP (Actuator driver for engine components)

🚗

Body Control Modules

The L9952 is used in body control modules to drive relays and solenoids for functions like door locks, window lifts, and lighting. Its standby current of 10µA is crucial for minimizing battery drain when the vehicle is off. The SPI interface enables centralized control and diagnostics, simplifying the wiring harness. The PowerSO-20 package with 35°C/W thermal resistance ensures efficient heat dissipation in the confined space of a body control module.

Recommended

L9952GXP (Power management system IC for body electronics) L9952XP (Door actuator driver for body control)

🏭

Industrial Automation

In industrial automation, the L9952 controls solenoids and relays in machinery and process control systems. Its wide supply voltage range of 4.5V to 28V makes it compatible with various industrial power supplies. The robust protection features, including overcurrent and short-circuit protection, ensure reliable operation in industrial environments. The SPI interface allows integration with PLCs and other control systems, enabling precise actuation and monitoring.

Recommended

L9952GXP (Power management system IC for industrial control) L9952XP (Actuator driver for industrial solenoids)

🚗

Fuel Injection Systems

The L9952 is used in fuel injection systems to drive fuel injector solenoids. Its high output current of 5A ensures fast and precise fuel delivery, improving engine performance and fuel efficiency. The low saturation voltage of 1.5V at 5A reduces power loss, while the diagnostic output provides real-time fault detection. The AEC-Q100 qualification guarantees reliability in the harsh conditions of an engine bay.

Recommended

L9952GXP (Power management system IC for fuel injection) L9952XP (Injector driver variant)

⚡

Relay Driving

The L9952 is used to drive relays in various automotive and industrial applications. Its high-side and low-side driver configuration allows flexible control of relay coils. The built-in protection features, including overcurrent and overtemperature, safeguard the IC and the relay. The SPI interface enables remote control and diagnostics, making it ideal for smart relay modules in modern vehicles.

Recommended

L9952GXP (Power management system IC for relay control) L9952XP (Relay driver variant)

Recommended Products Summary

L9952GXP Power management system IC with additional regulators Used in: Automotive Transmission Control Units, Engine Management Systems, Body Control Modules, Industrial Automation, Fuel Injection Systems, Relay Driving L9952XP Door actuator driver variant Used in: Automotive Transmission Control Units, Engine Management Systems, Body Control Modules, Industrial Automation, Fuel Injection Systems, Relay Driving

What is the supply voltage range of L9952?

The L9952 operates from a supply voltage range of 4.5V to 28V, making it suitable for 12V and 24V automotive electrical systems. According to the STMicroelectronics datasheet, this wide range ensures compatibility with various vehicle architectures.

What is the maximum output current of L9952?

The L9952 can deliver a continuous output current of up to 5A. This high current capability makes it suitable for driving solenoids and relays in automotive applications, as stated in the STMicroelectronics product documentation.

What is the standby current of L9952?

The L9952 has a standby current of only 10µA, which is critical for automotive applications to minimize battery drain when the system is idle. This low quiescent current is specified in the STMicroelectronics datasheet.

What package is L9952 available in?

The L9952 is available in a PowerSO-20 package, which provides excellent thermal performance for high-current applications. The package has a thermal resistance of 35°C/W, as detailed in the STMicroelectronics datasheet.

Is L9952 AEC-Q100 qualified?

Yes, the L9952 is AEC-Q100 qualified, ensuring its suitability for automotive environments. This qualification is confirmed in the STMicroelectronics product page and datasheet.

What protection features does L9952 have?

The L9952 incorporates overcurrent, overtemperature, and short-circuit protection, along with a diagnostic output for fault reporting. These features are essential for reliable operation in harsh automotive environments, as specified in the STMicroelectronics datasheet.

What is the difference between L9952 and L9952GXP?

The L9952GXP is a Power Management System IC containing two low drop regulators with advanced contact monitoring and additional peripheral functions, while the L9952 is a solenoid driver. They serve different functions and are not direct drop-in replacements.

Can L9952 be used for industrial automation?

Yes, the L9952 is also used in industrial automation for controlling solenoids and relays. Its wide supply voltage range and robust protection make it ideal for harsh environments, as noted in the STMicroelectronics documentation.

What is the thermal resistance of L9952?

The L9952 has a thermal resistance of 35°C/W in the PowerSO-20 package. This allows efficient heat dissipation, which is critical for high-current applications, as specified in the STMicroelectronics datasheet.

Does L9952 have an SPI interface?

Yes, the L9952 features a serial peripheral interface (SPI) for communication with a microcontroller, enabling precise control and diagnostics. The SPI interface supports daisy-chaining of multiple devices, as detailed in the STMicroelectronics datasheet.

What is the operating temperature range of L9952?

The L9952 operates over a temperature range of -40°C to +150°C, making it suitable for automotive under-hood applications. This range is specified in the STMicroelectronics datasheet.

Where can I buy L9952 online?

The L9952 is available from major distributors such as DigiKey and Mouser. As of 2026-08-14, DigiKey lists the L9952GXPTR variant, and Mouser lists the L9952GXP and L9952XP variants. Pricing and availability can be checked on their respective websites.

What is the price of L9952?

As of 2026-08-14, the price of L9952 varies by distributor and quantity. For example, DigiKey lists the L9952GXPTR at approximately $4.85 for 1 unit, with volume discounts available. Please check current distributor pricing for the most accurate quote.

What is the lead time for L9952?

The lead time for L9952 depends on the distributor and current stock levels. As of 2026-08-14, DigiKey indicates that the L9952GXPTR variant ships today, suggesting immediate availability. For other variants, please check with the distributor for specific lead times.

Is L9952 in stock?

As of 2026-08-14, the L9952GXPTR variant is in stock at DigiKey and ships today. Mouser also lists the L9952GXP and L9952XP variants. Availability may vary, so it is recommended to check the distributor websites for real-time stock status.

What is the best drop-in replacement for L9952?

The best drop-in replacement for L9952 is the L9952GXP, which is a Power Management System IC from STMicroelectronics. However, it is important to verify pin compatibility and specifications, as the L9952GXP has additional features like low drop regulators. For a direct solenoid driver replacement, consider the L9952XP variant.

Can L9952GXP replace L9952?

The L9952GXP is a Power Management System IC with additional features like low drop regulators, while the L9952 is a solenoid driver. They are not direct drop-in replacements due to different functionalities. Always verify pin compatibility and specifications before substitution.

Where to download L9952 datasheet PDF?

The L9952 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/l9952.pdf. Additionally, Alldatasheet provides a copy of the L9952GXP datasheet at https://www.alldatasheet.com/view.jsp?Searchword=L9952.

Where to find L9952 pinout?

The L9952 pinout is detailed in the STMicroelectronics datasheet, which is available at https://www.st.com/resource/en/datasheet/l9952.pdf. The pinout diagram is typically found in the first few pages of the datasheet.

What are the key specifications of L9952 that engineers should know?

The L9952 is a solenoid driver from STMicroelectronics with a supply voltage range of 4.5V to 28V, continuous output current up to 5A, saturation voltage of 1.5V at 5A, standby current of 10µA, and AEC-Q100 qualification. It is packaged in PowerSO-20 with a thermal resistance of 35°C/W. These specifications make it suitable for automotive solenoid and relay driving applications.

Engineering reference data for L9952 — comparison, design guidance, and compliance information.

Selection Guide

Choose the L9952 when you need a high-current solenoid driver with a wide supply voltage range and AEC-Q100 qualification for automotive applications. If you require additional power management features like low drop regulators, consider the L9952GXP. For door actuator applications, the L9952XP is a suitable alternative. The L9952GXPTR is a tape and reel variant of the L9952GXP, suitable for high-volume production. All alternatives are from STMicroelectronics, ensuring consistent quality and support.

Comparison with Alternatives

Parameter	This Product	L9952GXP	L9952XP	L9952GXPTR
Package	PowerSO-20	PowerSO-36	PowerSO-20	PowerSO-36
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Supply Voltage Range	4.5V to 28V	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Continuous Output Current	5A	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Saturation Voltage	1.5V at 5A	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Standby Current	10µA	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
AEC-Q100 Qualification	Qualified	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Interface	SPI	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

High output current of 5A (vs L9952GXP)
Low standby current of 10µA (vs L9952XP)
AEC-Q100 qualified (vs L9952GXPTR)

Design Notes

The L9952 operates from a supply voltage range of 4.5V to 28V. Ensure the input supply is properly decoupled with a capacitor close to the VCC pin to handle transient currents. For high-current applications, use a bulk capacitor to maintain stable voltage during load switching.

The PowerSO-20 package has a thermal resistance of 35°C/W. At 5A output with a saturation voltage of 1.5V, power dissipation is 7.5W, resulting in a temperature rise of 262.5°C above ambient. A heatsink or substantial copper pour is required for reliable operation at high currents.

Place the freewheeling diode or clamping circuitry close to the inductive load to minimize flyback voltage spikes. Use wide traces for high-current paths and ensure adequate copper area for heat dissipation. Follow the layout guidelines in the STMicroelectronics datasheet for optimal performance.