Overview
The L9953LXPTR is a microcontroller-driven multifunctional door actuator driver designed for automotive applications by STMicroelectronics. This device is capable of driving up to three DC motors and three grounded resistive loads using five half bridges and three highside drivers. The integrated standard serial peripheral interface (SPI) controls all operation modes, including forward, reverse, brake, and high impedance. All diagnostic information is accessible via the SPI interface.
Key Specifications
| Parameter | Description |
|---|---|
| Package | PowerSSO-36 |
| Marketing Status | Active |
| Grade | Automotive |
| RoHS Compliance | Ecopack2 |
| Operating Temperature (°C) | -40 to 150 |
| Power Supply Voltage (VS) | 7V to 28V |
| Logic Supply Voltage (VCC) | 5V ± 10% |
| Half Bridges | Three half bridges for 0.75A loads (RDSon=1600mΩ) |
| Highside Drivers | Two configurable highside drivers for up to 1.5A load (RDSon=500mΩ) or 0.35A load (Ron=1800mΩ); One highside driver for 6A load (Ron=100mΩ) |
| Full Bridge | One full bridge for 6A load (Ron=150mΩ) |
| Current Consumption in Standby | IS < 6µA typ; Tj ≤ 85 °C |
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 soft start function to drive loads with higher inrush currents
- Current monitor output for highside OUT1, OUT4, OUT5, and OUT8
Applications
The L9953LXPTR is designed for various automotive applications, including:
- Door actuator control
- Mirror axis control
- Mirror fold control
- Mirror defroster control
- Control of two 10W-light bulbs and/or LEDs
Q & A
- What is the primary function of the L9953LXPTR?
The L9953LXPTR is a microcontroller-driven multifunctional door actuator driver for automotive applications.
- How many DC motors can the L9953LXPTR drive?
The device can drive up to three DC motors.
- What types of loads can the L9953LXPTR handle?
The device can handle up to three grounded resistive loads and various DC motors using its half bridges and highside drivers.
- What is the role of the SPI interface in the L9953LXPTR?
The SPI interface controls all operation modes (forward, reverse, brake, and high impedance) and provides access to all diagnostic information.
- What are the key protection features of the L9953LXPTR?
The device features short circuit protection, over temperature protection, overload diagnostic, and open-load diagnostic for all outputs.
- How does the L9953LXPTR manage high inrush currents?
The device includes a programmable soft start function to handle loads with higher inrush currents.
- What is the current consumption in standby mode?
The current consumption in standby mode is less than 6µA (typical) at Tj ≤ 85 °C.
- What is the purpose of the charge pump output?
The charge pump output is used for reverse polarity protection.
- Can the L9953LXPTR be controlled using PWM signals?
- What is the operating temperature range of the L9953LXPTR?
The operating temperature range is -40 to 150 °C.
