New multi-output automotive power management IC with buck-boost pre-regulator

Allegro MicroSystems has introduced a new power management IC that uses a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage, complete with control, diagnostics, and protections. The output of the company’s A4408 supplies a 5V / 115mA tracking/protected LDO, a 3.3V / 165mA LDO, a 5V / 325mA LDO, and an adjustable output synchronous buck regulator (1.25V / 700mA).   The device is ideal for under-hood applications, with key automotive applications including: Electronic Power Steering (EPS), Transmission Control Units (TCU), Advanced Braking Systems (ABS), Advanced Driver Assistance Systems (ADAS), Emissions Control Modules, and other automotive applications.   The A4408 is supplied in a low profile (1.2mm maximum height) 38-lead eTSSOP package (suffix ‘LV’) with exposed thermal pad.