STMicroelectronics apresenta IC completo de gerenciamento de energia automotiva

STMicroelectronics Introduces Complete Automotive Power Management IC

STMicroelectronics' new SPSB081 automotive power management IC is a Swiss Army knife of features, including a fixed low-voltage dropout (LDO) main regulator, a programmable secondary LDO, four high-side drivers, a CAN FD transceiver, and a LIN optional. 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 the chip help simplify the design of car body controllers for the sunroof, seats, tailgate, doors and lighting modules.

Highlighting their adaptability, the controllers are also used in gateways, HVAC controllers, passive keyless entry systems, telematics control units and control panels.

Available variants include SPSB081C3 and SPSB081C5, which contain a fixed 3.3 or 5V LDO respectively with a CAN transceiver. The SPSB0813 and SPSB0815 contain the additional LIN transceiver. The secondary LDO, included in all variants, can be programmed via the IC's SPI port to operate as an independent 3.3 or 5V regulator or to track the primary LDO.

The four high-side drivers can supply up to 140mA to power LEDs and sensors, with current monitoring and a 10-bit PWM timer for each channel.

Extensive built-in protection is provided as well as a diagnostic output pin for fail-safe signaling. These features support use in applications that must meet functional safety requirements according to ISO 26262, even if they are not designed as a safety hardware element. All outputs have overcurrent protection and open load fault indication.

The primary (fixed) LDO has overvoltage protection and thermal protection circuitry, while the secondary (programmable) LDO has overload, overtemperature, short circuit, and reverse bias protection. Both have short circuit monitoring at startup and continuous regulator failure monitoring.

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