L9959-TR - Single/Dual PMOS High-Side H-Bridge | STMicroelectronics
MPN: L9959-TR β Active| 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 |
Drop-in alternatives for L9959-TR 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:
L9959T-TR-D
β Drop-Inπ Reference alternative (not in catalog)
L9959S-TR-D
β Drop-Inπ Reference alternative (not in catalog)
L9959U-TR
β Drop-Inπ Reference alternative (not in catalog)
L9959-TR Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 (dual H-bridge) |
| Output Current (Peak) | 8.5 A per channel |
| Operating Voltage Range | 4.5 V to 28 V |
| Control Interface | SPI and direct PWM/DIR |
| High-Side Architecture | PMOS |
| Package | PowerSO-36 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40Β°C to +150Β°C |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| Protection Features | Overcurrent, overtemperature, short-circuit |
| Diagnostic Feedback | SPI |
| Supply Current (Quiescent) | [DATA_NEEDED: quiescent current] |
| Output On-Resistance | [DATA_NEEDED: RDS(on)] |
L9959-TR Pin Configuration
| Pin 1 | VS β Battery supply voltage |
| Pin 2 | OUT1 β H-bridge output 1 |
| Pin 3 | OUT2 β H-bridge output 2 |
| Pin 4 | GND β Ground |
| Pin 5 | PWM1 β PWM control input for channel 1 |
| Pin 6 | DIR1 β Direction control input for channel 1 |
| Pin 7 | PWM2 β PWM control input for channel 2 |
| Pin 8 | DIR2 β Direction control input for channel 2 |
| Pin 9 | CSN β SPI chip select (active low) |
| Pin 10 | SCK β SPI clock |
| Pin 11 | SDI β SPI data input |
| Pin 12 | SDO β SPI data output |
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
L9959-TR is suitable for 6 applications: Automotive Body Control Module, Industrial Actuator Control, DC Motor Driver for Robotics, Solenoid Driver for Pneumatic Systems, Power Window Lift Motor Driver, Seat Adjuster Motor Driver.
Automotive Body Control Module
The L9959-TR is ideal for automotive body control modules where it drives DC motors for window lifts, seat adjusters, and mirror controls. Its AEC-Q100 qualification ensures reliability in harsh automotive environments. The dual H-bridge configuration allows two independent loads to be controlled, reducing component count. The SPI interface enables advanced diagnostics and configuration, while the wide voltage range (4.5V to 28V) accommodates various vehicle supply voltages. The PMOS high-side architecture minimizes quiescent current, which is critical for battery-powered systems. With 8.5A peak current capability, it can handle inrush currents of DC motors. The built-in protection features (overcurrent, overtemperature, short-circuit) safeguard the module and the vehicle's electrical system. The PowerSO-36 package with exposed pad ensures efficient heat dissipation, allowing continuous operation at high currents. Overall, the L9959-TR simplifies BCM design while meeting stringent automotive standards.
Recommended
Industrial Actuator Control
In industrial automation, the L9959-TR drives actuators such as solenoids, valves, and small DC motors. Its ability to handle inductive loads with built-in freewheeling diodes eliminates the need for external clamping components, simplifying design. The wide operating voltage range (4.5V to 28V) makes it compatible with 24V industrial supplies. The SPI interface allows for precise control and monitoring, enabling predictive maintenance through diagnostic feedback. The device's robust protection features ensure reliable operation in harsh industrial environments. The dual H-bridge configuration can control two actuators independently, saving PCB space. The PMOS high-side architecture reduces power dissipation compared to low-side drivers, improving efficiency. With 8.5A peak current, it can drive high-power actuators. The PowerSO-36 package is suitable for industrial PCBs with proper thermal management. Overall, the L9959-TR provides a reliable and flexible solution for industrial actuator control.
Recommended
DC Motor Driver for Robotics
The L9959-TR is well-suited for robotics applications where precise bidirectional motor control is required. Its dual H-bridge configuration allows independent control of two motors, enabling differential drive for mobile robots. The SPI interface provides high-speed communication with microcontrollers, allowing for complex motion profiles. The device's 8.5A peak current capability can drive motors with high stall currents. The wide voltage range (4.5V to 28V) supports various battery configurations. The built-in protection features prevent damage from motor back-EMF and overcurrent conditions. The PMOS high-side architecture ensures low quiescent current, extending battery life in battery-powered robots. The PowerSO-36 package is compact, fitting into space-constrained robot designs. With AEC-Q100 qualification, it is also suitable for automotive robotics applications. Overall, the L9959-TR offers a robust and flexible solution for robotic motor control.
Recommended
Solenoid Driver for Pneumatic Systems
The L9959-TR is an excellent choice for driving solenoids in pneumatic systems, such as those used in industrial automation and automotive applications. Its ability to handle inductive loads with built-in freewheeling diodes ensures reliable switching without external clamping. The dual H-bridge configuration can control two solenoids independently, reducing component count. The SPI interface allows for precise timing control and diagnostic feedback, enabling efficient system monitoring. The device's wide voltage range (4.5V to 28V) is compatible with various supply voltages. The 8.5A peak current capability can drive high-power solenoids. The protection features (overcurrent, overtemperature, short-circuit) ensure safe operation in demanding environments. The PMOS high-side architecture minimizes power dissipation, improving energy efficiency. The PowerSO-36 package is suitable for industrial PCBs. Overall, the L9959-TR provides a reliable and efficient solution for solenoid control.
Recommended
Power Window Lift Motor Driver
The L9959-TR is specifically designed for automotive power window lift systems. Its dual H-bridge configuration allows independent control of front and rear windows. The device's 8.5A peak current capability handles the high inrush current of window motors. The SPI interface enables advanced features like anti-pinch detection and soft-start control. The wide voltage range (4.5V to 28V) accommodates the vehicle's electrical system variations. The AEC-Q100 qualification ensures reliability in extreme temperatures and vibrations. The built-in protection features prevent damage from motor stalls and short circuits. The PMOS high-side architecture reduces quiescent current, which is important for battery conservation when the vehicle is off. The PowerSO-36 package with exposed pad ensures efficient heat dissipation during continuous operation. Overall, the L9959-TR provides a robust and feature-rich solution for power window systems.
Recommended
Seat Adjuster Motor Driver
The L9959-TR is ideal for driving seat adjuster motors in automotive applications. Its dual H-bridge configuration allows independent control of multiple seat motors, such as for forward/backward and recline adjustments. The device's 8.5A peak current capability handles the high torque requirements of seat motors. The SPI interface enables precise position control and diagnostic feedback. The wide voltage range (4.5V to 28V) is compatible with the vehicle's power supply. The AEC-Q100 qualification ensures reliability in automotive environments. The built-in protection features prevent damage from motor stalls and overcurrent conditions. The PMOS high-side architecture minimizes power dissipation, improving efficiency. The PowerSO-36 package is compact, fitting into space-constrained seat modules. Overall, the L9959-TR provides a reliable and efficient solution for seat adjuster control.
Recommended
Recommended Products Summary
Engineering reference data for L9959-TR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | L9959T-TR-D | L9959S-TR-D | L9959U-TR |
|---|---|---|---|---|
| Package | PowerSO-36 | PowerSO-36 | PowerSO-36 | PowerSO-36 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Channels | 2 | 2 | 2 | 2 |
| Output Current (Peak) | 8.5 A | 8.5 A | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Voltage Range | 4.5V to 28V | 4.5V to 28V | [DATA_NEEDED] | [DATA_NEEDED] |
| Control Interface | SPI and PWM/DIR | SPI and PWM/DIR | [DATA_NEEDED] | [DATA_NEEDED] |
| AEC-Q100 Qualified | Yes | Yes | [DATA_NEEDED] | [DATA_NEEDED] |
| Protection Features | Overcurrent, overtemperature, short-circuit | Overcurrent, overtemperature, short-circuit | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Dual H-bridge in a single package (vs Discrete H-bridge solutions)
- SPI control and diagnostics (vs L9959S-TR-D (if it lacks SPI))
- AEC-Q100 qualification (vs Non-automotive H-bridge drivers)
Design Notes
Ensure adequate decoupling on the VS pin with a 100nF ceramic capacitor placed as close as possible, and a 10uF electrolytic capacitor for bulk storage. The L9959-TR can draw high peak currents (8.5A), so the power supply must be capable of handling these transients without voltage droop.
The PowerSO-36 package has an exposed pad that must be soldered to a copper area on the PCB for heat dissipation. For continuous operation at high currents, use a thermal via array under the pad and ensure adequate copper thickness. The maximum junction temperature is 150Β°C, so calculate power dissipation and thermal resistance to avoid exceeding this limit.
Keep the SPI lines (CSN, SCK, SDI, SDO) short and shielded to minimize noise. Use pull-up resistors on CSN and SDO as recommended in the datasheet. For the PWM and DIR inputs, add RC filters to suppress ringing and ensure clean logic levels.
Compliance Information
RoHS and REACH compliant per STMicroelectronics. AEC-Q100 qualified for automotive applications.
