Allegro's A4408 is a 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 pre-regulator supplies a 5 V/250 mA_MAX tracking/protected LDO, a 3.3 V/160 mA LDO, a 5 V/150 mA LDO, and a 1.25 V/1 A synchronous buck regulator. Designed to supply CAN or microprocessor power supplies in high temperature environments, the A4408 is ideal for under-hood applications.