L9950 - Multifunctional Door Actuator Driver | STMicroelectronics
MPN: L9950 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.44 | $5,440.00 |
Drop-in alternatives for L9950 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:
L9950TR
β Drop-Inπ Reference alternative (not in catalog)
L9950XP
β Drop-Inπ Reference alternative (not in catalog)
VND5012AK
β‘ Same Packageπ Reference alternative (not in catalog)
L9950 Maximum Ratings & Electrical Characteristics
| Number of Half-Bridges | 6 |
| Number of High-Side Drivers | 5 |
| Number of DC Motors | 5 |
| Number of Grounded Resistive Loads | 5 |
| Package | PowerSO-36, Bottom Pad |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40Β°C to +150Β°C |
| Supply Voltage Range | [DATA_NEEDED: Supply Voltage Range] |
| Output Current per Channel | [DATA_NEEDED: Output Current per Channel] |
| Logic Input Voltage | [DATA_NEEDED: Logic Input Voltage] |
| Protection Features | Overcurrent, Overtemperature, Short-Circuit |
| RoHS Status | Compliant |
| Automotive Grade | Yes |
| Communication Interface | Parallel Logic Inputs |
| Thermal Resistance | [DATA_NEEDED: Thermal Resistance] |
L9950 Pin Configuration
| Pin 1 | VS β Battery supply voltage |
| Pin 2 | GND β Ground |
| Pin 3 | OUT1 β Half-bridge output 1 |
| Pin 4 | OUT2 β Half-bridge output 2 |
| Pin 5 | OUT3 β Half-bridge output 3 |
| Pin 6 | OUT4 β Half-bridge output 4 |
| Pin 7 | OUT5 β Half-bridge output 5 |
| Pin 8 | OUT6 β Half-bridge output 6 |
| Pin 9 | HS1 β High-side driver output 1 |
| Pin 10 | HS2 β High-side driver output 2 |
| Pin 11 | HS3 β High-side driver output 3 |
| Pin 12 | HS4 β High-side driver output 4 |
| Pin 13 | HS5 β High-side driver output 5 |
| Pin 14 | IN1 β Logic input for half-bridge 1 |
| Pin 15 | IN2 β Logic input for half-bridge 2 |
| Pin 16 | IN3 β Logic input for half-bridge 3 |
| Pin 17 | IN4 β Logic input for half-bridge 4 |
| Pin 18 | IN5 β Logic input for half-bridge 5 |
| Pin 19 | IN6 β Logic input for half-bridge 6 |
| Pin 20 | IN7 β Logic input for high-side driver 1 |
| Pin 21 | IN8 β Logic input for high-side driver 2 |
| Pin 22 | IN9 β Logic input for high-side driver 3 |
| Pin 23 | IN10 β Logic input for high-side driver 4 |
| Pin 24 | IN11 β Logic input for high-side driver 5 |
| Pin 25 | EN β Enable input |
| Pin 26 | DIAG β Diagnostic output |
| Pin 27 | VCC β Logic supply voltage |
| Pin 28 | GND β Ground |
| Pin 29 | VS β Battery supply voltage |
| Pin 30 | GND β Ground |
| Pin 31 | OUT1 β Half-bridge output 1 |
| Pin 32 | OUT2 β Half-bridge output 2 |
| Pin 33 | OUT3 β Half-bridge output 3 |
| Pin 34 | OUT4 β Half-bridge output 4 |
| Pin 35 | OUT5 β Half-bridge output 5 |
| Pin 36 | OUT6 β Half-bridge output 6 |
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
L9950 is suitable for 6 applications: Central Door Locking System, Power Window Lift, Mirror Adjustment, Seat Adjustment, Trunk/Tailgate Actuation, HVAC Actuator Control.
Central Door Locking System
The L9950 drives door lock actuators in central locking systems. Its six half-bridges allow bidirectional control of lock motors, enabling both locking and unlocking operations. The high-side drivers can also control solenoids for child safety locks. The device's automotive-grade temperature range and protection features ensure reliable operation in harsh environments. Compared to discrete solutions, the L9950 reduces component count and PCB area, simplifying the body control module design. Its parallel logic interface allows direct connection to a microcontroller, enabling precise actuator control and diagnostics.
Recommended
Power Window Lift
The L9950 controls window lift motors with its half-bridges, providing forward and reverse operation. The device's high-current output stages handle the inrush current of window motors, while the protection features prevent damage from stalling. The wide operating temperature range ensures functionality in extreme climates. The integrated high-side drivers can also control window switches or illumination. The L9950's compact PowerSO-36 package fits within the limited space of door modules, and its thermal pad aids heat dissipation during prolonged operation. This integration reduces wiring and improves system reliability.
Recommended
Mirror Adjustment
The L9950 drives mirror adjustment motors in both horizontal and vertical axes. Its half-bridges enable precise bidirectional control, allowing users to adjust mirror position smoothly. The device's low on-resistance minimizes power loss, and the protection features safeguard against motor faults. The high-side drivers can control mirror heating elements or turn indicators. The L9950's logic-level inputs interface directly with the body control module, simplifying the control algorithm. Its automotive qualification ensures long-term reliability in vibration and temperature extremes.
Recommended
Seat Adjustment
The L9950 drives seat adjustment motors for forward, backward, recline, and lumbar support. Its six half-bridges can control multiple motors simultaneously, enabling complex seat positioning. The device's high-current capability handles the load of seat motors, and the protection features prevent damage from overcurrent. The high-side drivers can control seat heaters or occupancy sensors. The L9950's compact package fits within the seat control module, and its thermal pad ensures efficient heat dissipation. This integration reduces wiring complexity and improves system reliability.
Recommended
Trunk/Tailgate Actuation
The L9950 controls trunk and tailgate actuators, providing bidirectional motor control for opening and closing mechanisms. Its half-bridges handle the high inrush current of actuators, while the protection features prevent damage from jams. The high-side drivers can control trunk lights or release solenoids. The device's automotive-grade design ensures reliable operation in outdoor conditions. The L9950's logic-level inputs allow direct connection to the body control module, enabling automated trunk operation. Its compact package fits within the limited space of the trunk module.
Recommended
HVAC Actuator Control
The L9950 drives HVAC actuators for air distribution and temperature control. Its half-bridges enable precise positioning of blend doors and mode doors, while the high-side drivers control blower relays or solenoids. The device's protection features ensure reliable operation in the harsh under-dash environment. The L9950's wide temperature range and automotive qualification make it suitable for HVAC applications. Its compact package fits within the HVAC control module, and the logic-level interface simplifies integration with the climate control unit.
Recommended
Recommended Products Summary
Engineering reference data for L9950 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | L9950TR | L9950XP | VND5012AK |
|---|---|---|---|---|
| Package | PowerSO-36 | PowerSO-36 | PowerSO-36 | PowerSO-36 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Half-Bridges | 6 | 6 | 6 | [DATA_NEEDED] |
| Number of High-Side Drivers | 5 | 5 | 5 | [DATA_NEEDED] |
| Operating Temperature Range | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | [DATA_NEEDED] |
| Protection Features | Overcurrent, Overtemperature, Short-Circuit | Overcurrent, Overtemperature, Short-Circuit | Overcurrent, Overtemperature, Short-Circuit | [DATA_NEEDED] |
| Automotive Grade | Yes | Yes | Yes | Yes |
| RoHS Status | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated six half-bridges and five high-side drivers (vs VND5012AK)
- Automotive-grade temperature range (vs VND5012AK)
- Built-in protection features (vs VND5012AK)
Design Notes
The L9950's PowerSO-36 package with bottom pad requires a thermal pad on the PCB for efficient heat dissipation. Ensure the exposed pad is soldered to a copper area of at least 1 square inch to maintain junction temperature within limits during continuous operation. For high-current loads, consider adding thermal vias to improve heat transfer to inner layers.
Place decoupling capacitors close to the VS and VCC pins to filter high-frequency noise. Use a 100nF ceramic capacitor for logic supply and a 10uF electrolytic capacitor for the battery supply. Route high-current output traces with adequate width to minimize voltage drops and EMI. Keep the logic input traces short and shielded from high-current paths.
Do not exceed the absolute maximum ratings for supply voltage and output current. Ensure the enable pin is properly driven to avoid unintended activation. The diagnostic output should be monitored by the microcontroller to detect faults. Avoid switching inductive loads without proper freewheeling diodes, as this can cause voltage spikes that damage the device.
Compliance Information
RoHS compliant per STMicroelectronics product page. AEC-Q100 qualified for automotive applications.
