European microelectronics company STMicroelectronics has released a power management IC (PMIC).
The automotive SPSB081 chip includes a primary low-voltage fixed voltage regulator (LDO), a secondary programmable LDO stabilizer, four high-side drivers, a CAN FD transceiver and an optional LIN transceiver. The PMICs provide multiple standby modes with very low quiescent current and programmable local or remote wake-up to minimize power consumption.
Power supplies and transceivers available on-chip help simplify the development of controllers for hatch, seat, door and lighting modules. The controllers are also used in gateways, HVAC controllers, passive keyless entry systems, telematics control units and control panels.
The SPSB081C3 and SPSB081C5 varieties include a fixed LDO at 3.3V or 5V, respectively, and a single CAN transceiver. They also contain an additional LIN transceiver. The secondary LDO included in all variants can be programmed via the chip's SPI port to operate as an independent 3.3V or 5V regulator or to track the primary LDO. Four high-side drivers can supply LEDs and sensors with up to 140mA of current. Current monitoring and a 10-bit PWM regulator are provided for each channel.
Built-in protection and a diagnostic output contact for failure signaling support functional safety requirements. All outputs have overcurrent protection and open load fault indication. The primary (fixed) LDO has overvoltage protection and thermal protection, and the secondary (programmable) LDO has overload, overtemperature, short-circuit, and reverse skew protection. Both devices have ground fault monitoring at startup and continuous regulator fault monitoring.
The SPSB081 family of automotive PMICs is AEC-Q100 certified, with specifications from -40°C to 150°C and can operate up to 175°C.