STMicroelectronics: new automotive power-management ICs

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STMicroelectronics’ SPSB081 automotive power-management IC is a Swiss Army Knife of features including a main fixed-voltage low-dropout regulator (LDO), a secondary programmable LDO, four high-side drivers, a CAN FD transceiver and an optional LIN transceiver . The ICs provide multiple standby modes with very low quiescent current and programmable local or remote wake-up to help minimize power consumption.

The power sources and transceivers available on-chip help simplify the design of car-body controllers for a sunroof, seats, tailgate, doors, and lighting modules. Highlighting their adaptability, the controllers are also used in gateways, HVAC controllers, passive keyless entry systems, telematic control units, and control panels.

The available variants include the SPSB081C3 and SPSB081C5, which contain a 3.3V or 5V fixed LDO, respectively, with one CAN transceiver. The SPSB0813 and SPSB0815 contain the additional LIN transceiver. The secondary LDO, included in all variants, can be programmed through the IC’s SPI port to operate as an independent 3.3V or 5V regulator, or to track the main LDO. The four high-side drivers can source up to 140mA to power LEDs and sensors, with current monitoring and a 10-bit PWM timer for each channel.

The SPSB081 family is AEC-Q100 qualified, specified from -40°C to 150°C, and able to operate up to 175°C.

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