Overview
The L9954LXPTR, produced by STMicroelectronics, is a microcontroller-driven multifunctional door actuator driver designed specifically for automotive applications. This integrated circuit is capable of driving up to two DC motors and three grounded resistive loads, making it a versatile solution for various car body applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package | PowerSSO-36 |
| Voltage Range | 7V to 28V |
| Half Bridges | Three half bridges for 0.75 A loads (RDSon = 1600 mΩ) |
| High-Side Drivers | Two configurable high-side drivers for up to 1.5 A load (RDSon = 500 mΩ) or 0.35 A load (Ron = 1800 mΩ), and one high-side driver for 6 A load (RDSon = 100 mΩ) |
| Current Consumption in Standby | Very low current consumption in standby mode (IS < 6 µA typ; Tj ≤ 85 °C) |
| Protection Features | All outputs short circuit protected, over temperature protected, open-load diagnostic, and overload diagnostic |
| Control Interface | Integrated standard Serial Peripheral Interface (SPI) |
| Programmable Soft Start | Programmable soft start function to drive loads with higher inrush currents |
Key Features
- Three half bridges for driving DC motors and resistive loads.
- Two configurable high-side drivers and one high-side driver for various load requirements.
- Programmable soft start function to handle loads with higher inrush currents.
- PWM control of all outputs.
- Current monitor output for high-side drivers.
- Charge pump output for reverse polarity protection.
- Overvoltage and under-voltage detection.
- Temperature warning and thermal shutdown protection.
- Low current consumption in standby mode.
Applications
The L9954LXPTR is designed for automotive applications, particularly for door actuator systems. It can be used to drive door actuators, mirror axis control, mirror defrosters, and other resistive loads such as light bulbs or LEDs.
Q & A
- What is the primary function of the L9954LXPTR? The L9954LXPTR is a microcontroller-driven multifunctional door actuator driver for automotive applications.
- What types of loads can the L9954LXPTR drive? It can drive up to two DC motors and three grounded resistive loads.
- What is the voltage range of the L9954LXPTR? The voltage range is from 7V to 28V.
- What protection features does the L9954LXPTR have? It includes short circuit protection, over temperature protection, open-load diagnostic, and overload diagnostic.
- How is the L9954LXPTR controlled? It is controlled via an integrated standard Serial Peripheral Interface (SPI).
- Does the L9954LXPTR have a soft start function? Yes, it has a programmable soft start function to drive loads with higher inrush currents.
- What is the current consumption in standby mode? Very low current consumption in standby mode (IS < 6 µA typ; Tj ≤ 85 °C).
- Can the L9954LXPTR handle inductive loads? Yes, it is designed to handle inductive loads with appropriate protection mechanisms.
- What diagnostic information is available via SPI? All diagnostic information, including current monitor output, overvoltage, under-voltage detection, and more, is available via SPI.
- What package type is the L9954LXPTR available in? It is available in the PowerSSO-36 package.
