Overview
The L9952GXPTR is a Power Management System IC developed by STMicroelectronics. This integrated circuit is designed to provide comprehensive power management solutions, particularly for automotive applications. It features two low-drop voltage regulators, advanced contact monitoring, and various peripheral functions. The device is controlled via a standard serial peripheral interface (SPI) which manages all operation modes and provides diagnostic functions for the drivers.
Key Specifications
| Parameter | Specification |
|---|---|
| Voltage Regulators | Two 5V low-drop regulators (250mA and 100mA continuous mode) |
| Stand-by Current | VBAT standby: 7µA, V1 standby: 45µA (75µA in cyclic sense) |
| High Side Drivers | 4 high side drivers (RDSon, typ = 7 Ω), 1 high side driver Out_HS (RDSon, typ = 1 Ω) |
| Relay Drivers | 2 relay drivers (RDSon, typ = 2 Ω) |
| Op Amps | 2 op amps for current sensing in GND return lines |
| LIN Compliance | LIN 2.1 compliant (SAEJ2602 compatible) transceiver |
| SPI Interface | 24-bit SPI interface for mode control and diagnostic |
| Package | PowerSSO-36 |
Key Features
- Two 5V low-drop voltage regulators with continuous load currents of 250mA and 100mA.
- Low stand-by current: VBAT standby at 7µA, V1 standby at 45µA (75µA in cyclic sense).
- Window watchdog and fail-safe output.
- Interrupt output and wake-up logic with cyclic contact monitoring.
- LIN 2.1 compliant transceiver.
- 24-bit SPI interface for mode control and diagnostic functions.
- High side drivers for LED or HALL sensors and relay drivers with short circuit protection.
- Op amps for current sensing in GND return lines.
- Temperature warning and thermal shutdown.
Applications
The L9952GXPTR is primarily designed for automotive Electronic Control Units (ECUs), such as door zone and body control modules. It is suitable for various automotive applications that require robust power management and advanced peripheral functions.
Q & A
- What is the primary function of the L9952GXPTR?
The L9952GXPTR is a Power Management System IC that provides two low-drop voltage regulators and various peripheral functions for automotive applications. - What are the specifications of the voltage regulators?
The device includes two 5V low-drop regulators with continuous load currents of 250mA and 100mA. - What is the stand-by current of the L9952GXPTR?
The stand-by current is 7µA for VBAT and 45µA for V1 (75µA in cyclic sense). - Does the L9952GXPTR support LIN communication?
Yes, it is LIN 2.1 compliant (SAEJ2602 compatible) with a built-in transceiver. - How is the device controlled?
The device is controlled via a 24-bit SPI interface for mode control and diagnostic functions. - What kind of drivers does the L9952GXPTR have?
The device includes high side drivers for LED or HALL sensors, relay drivers, and op amps for current sensing. - Is the L9952GXPTR protected against short circuits?
Yes, the outputs are short circuit protected. - What are the thermal management features of the L9952GXPTR?
The device includes temperature warning and thermal shutdown features. - In which package is the L9952GXPTR available?
The device is available in the PowerSSO-36 package. - What are the typical applications of the L9952GXPTR?
The device is typically used in automotive ECUs such as door zone and body control modules.
