Overview
The L9953XPTR is a microcontroller-driven multifunctional door actuator driver designed by STMicroelectronics for automotive applications. This device is capable of driving up to three DC motors and three grounded resistive loads using five half bridges and three highside drivers. It integrates a standard serial peripheral interface (SPI) to control all operation modes, including forward, reverse, brake, and high impedance. The L9953XPTR is packaged in a PowerSSO-36 format and is RoHS compliant with an Ecopack2 grade.
Key Specifications
| Parameter | Value |
|---|---|
| Package | PowerSSO-36 |
| Number of Half Bridges | 5 |
| Number of Highside Drivers | 3 |
| Full Bridge Current | 6A (Ron=150mΩ) |
| Half Bridge Current | 1.5A (Ron=800mΩ) |
| Highside Driver Current | 6A (Ron=100mΩ), 1.5A (Ron=800mΩ) |
| Standby Current | <6μA (Tj≤ 85 °C) |
| Operating Temperature | -40°C to 150°C |
| RoHS Compliance | Ecopack2 |
Key Features
- Open load diagnostic for all outputs
- All outputs over temperature protected
- Separated half bridges for door lock motor
- Overload diagnostic for all outputs
- Charge pump output for reverse polarity protection
- PWM control of all outputs
- All outputs short circuit protected
- Programmable softstart function to drive loads with higher inrush currents
- Current monitor output for highside OUT1, OUT4, OUT5, and OUT8
- Very low current consumption in standby mode
Applications
The L9953XPTR is designed for various automotive applications, including:
- Door actuator driver with bridges for door lock, mirror axis control, mirror fold, and mirror defroster
- Driving two 10W light bulbs
- Controlling other grounded resistive loads
Q & A
- What is the primary function of the L9953XPTR?
The L9953XPTR is a microcontroller-driven multifunctional door actuator driver for automotive applications. - How many DC motors can the L9953XPTR drive?
It can drive up to three DC motors. - What is the package type of the L9953XPTR?
The L9953XPTR is packaged in a PowerSSO-36 format. - What is the maximum current rating of the full bridge?
The full bridge has a maximum current rating of 6A with an on-resistance of 150mΩ. - Does the L9953XPTR have overtemperature protection?
Yes, all outputs are overtemperature protected. - How is the device controlled?
The device is controlled via a standard serial peripheral interface (SPI). - What is the standby current consumption of the L9953XPTR?
The standby current consumption is less than 6μA at Tj≤ 85 °C. - Is the L9953XPTR RoHS compliant?
Yes, it is RoHS compliant with an Ecopack2 grade. - What types of loads can the L9953XPTR drive?
The L9953XPTR can drive DC motors and grounded resistive loads. - Does the L9953XPTR have a programmable softstart function?
Yes, it has a programmable softstart function to drive loads with higher inrush currents.
