Overview
The L9950XP, produced by STMicroelectronics, is a microcontroller-driven multifunctional door actuator driver designed for automotive applications. It is capable of driving up to five DC motors and five grounded resistive loads using six half bridges and five highside drivers. The device is controlled via a standard serial peripheral interface (SPI) and provides comprehensive diagnostic information through the same interface. This driver is optimized for various automotive actuator functions, including door lock, mirror control, and lighting systems.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage - Supply | 7 V ~ 28 V |
| Current - Supply | 7 mA |
| Operating Temperature | -40°C ~ 150°C |
| Mounting Type | Surface Mount |
| Package / Case | PowerSSO-36 Exposed Bottom Pad |
| RoHS Compliance Grade | Ecopack2 |
| Grade | Automotive |
Key Features
- One full bridge for 6A load (Ron = 150 mΩ)
- Two half bridges for 3A load (Ron = 300 mΩ)
- Two half bridges for 1.5A load (Ron = 800 mΩ)
- One highside driver for 6A load (Ron = 100 mΩ)
- Four highside drivers for 1.5 A load (Ron = 800 mΩ)
- Programmable softstart function to drive loads with higher inrush currents
- Very low current consumption in standby mode (IS < 6 μA typ; ICC < 25 μA typ; Tj ≤ 85 °C)
- All outputs short circuit protected
- Current monitor output for 300 mΩ, 150 mΩ, and 100 m highside drivers
- All outputs over temperature protected
- Open load diagnostic for all outputs
- Overload diagnostic for all outputs
- Separated half bridges for door lock motor
- PWM control of all outputs
- Charge pump output for reverse polarity protection
Applications
The L9950XP is designed for various automotive applications, including:
- Door actuator driver with bridges for door lock and safe lock
- Mirror axis control
- Mirror fold
- Highside driver for mirror defroster
- Control of up to four 10W-light bulbs
Q & A
- What is the primary function of the L9950XP?
The L9950XP is a microcontroller-driven multifunctional door actuator driver for automotive applications. - How many DC motors and resistive loads can the L9950XP drive?
It can drive up to five DC motors and five grounded resistive loads. - What is the voltage supply range for the L9950XP?
The voltage supply range is 7 V to 28 V. - What is the operating temperature range of the L9950XP?
The operating temperature range is -40°C to 150°C. - What type of package does the L9950XP come in?
The L9950XP comes in a PowerSSO-36 Exposed Bottom Pad package. - Is the L9950XP RoHS compliant?
Yes, the L9950XP is RoHS compliant with an Ecopack2 grade. - What are the key protection features of the L9950XP?
The device features short circuit protection, over temperature protection, open load diagnostic, and overload diagnostic for all outputs. - How is the L9950XP controlled?
The device is controlled via a standard serial peripheral interface (SPI). - What is the purpose of the programmable softstart function?
The programmable softstart function is designed to drive loads with higher inrush currents. - Does the L9950XP support PWM control?
Yes, the L9950XP supports PWM control of all outputs.
