STMicroelectronics SPSB081 Automotive Power Management IC (PMIC)

STMicroelectronics SPSB081 Automotive Power Management IC (PMIC) provides enhanced power management functionality for electronic control modules. These include various standby modes to minimize power consumption with programmable local and remote wake-up capability, LIN (only for SPSB0815 and SPSB0813), and CAN FD physical communication layers. The device has one low-drop voltage regulator to supply the system microcontroller and one voltage tracker to supply external peripheral loads such as sensors. V1 is available with a fixed rail (5V or 3.3V) and V1 overvoltage detection and protection solution, while V2 is a tracker voltage regulator of V1, programmable by SPI with 5V or 3.3V. Moreover, the device features four high-side drivers to supply LEDs and sensors. All outputs are short-circuit (SC) protected and implement open-load diagnosis. The ST standard SPI interface allows control and diagnosis of the device and enables generic software development.

Features

AEC-Q100 qualified
One 5V (or 3.3V for SPSB0813 and SPSB081C3) low drop voltage regulator (V1) for microcontroller and peripheral supply
One configurable 5V or 3.3V low drop voltage regulator V2 selectable via SPI, tracker for V1
Minimum current limitation of 450mA for V1 and 400mA for V2
No electrolytic capacitor is required on regulator outputs
A very low quiescent current in standby modes (typ. 15µA)
Programmable reset generator for power-on and undervoltage
Configurable window watchdog
LIN transceivers ISO 17987-4/2016 compliant (only for SPSB0815 and SPSB0813)
CAN-FD transceiver (ISO 11898-2/2016, SAE J2284 compliant) with local failure and bus failure diagnosis
Complete 2-channel contact monitoring interface (WU1 and WU2 input pins) with programmable cyclic sense functionality. WU2 also with
DIR functionality

Programmable periodic system wake-up feature
STM standard serial peripheral interface (32Bit/ST-SPI)
4 HS drivers for 0.14A (R_ON = 7Ω) suitable to drive external LED modules with high input capacitance value or to also supply external contacts
Internal 10-bit PWM timer for each standalone high-side driver
Buffered supply for all voltage regulators
DIAGN output pin for fail-safe signalization
Current monitor output for all internal high-side drivers
Open-load diagnosis for all outputs
Overcurrent protection for all outputs
V1 overvoltage detection and protection
The device contains temperature warning and protection
Thermal cluster
Limited documentation is available for customers that need support when dealing with ASIL requirements as per ISO 26262

Applications

Body Control Modules (BCM)
Gateway applications
Telematic control unit
Passive keyless entry and start modules
Control panel
Heating, Ventilation, and Air Conditioning (HVAC)
Seat control modules

Sunroof modules
Tailgate modules
Door modules
Light control modules
Gear shifters
Steering column
Fuel pump

Functional Block Diagrams

Block Diagram - STMicroelectronics SPSB081 Automotive Power Management IC (PMIC)

STMicroelectronics SPSB081 Automotive Power Management IC (PMIC)

Features

Applications

Functional Block Diagrams

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