The A81411 is a power-management integrated circuit (IC) that integrates a buck-boost preregulator, five LDOs, and many safety features. The preregulator uses a buck-boost topology to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage complete with control, diagnostics, and protections.
The output of the preregulator supplies a 600 mA linear regulator that can output 5 V or 3.3 V (VUC), a 5 V (or 3.3 V factory option) 200 mA linear regulator (VLDOA), and two 5 V or 3.3 V/150 mA linear regulators (VLDOP1 and VLDOP2) that are protected when shorted to battery. Designed to supply power for microprocessors, sensors, and CAN transceivers, the A81411 is ideal for under-the-hood applications. A fifth always-on LDO (VLDOB) can supply 50 mA at either 5 V or 3.3 V.
