Datasheet Summary
Cold Crank Boost and Buck Controller with Drivers for ASIL-D Automotive Applications
Description
The RAA271041 is a controller for a dual regulator system capable of supporting ASIL-D automotive systems which must operate during battery dropout conditions. The Channel 2 boost regulator maintains the voltage rail which supplies the downstream Channel 1 buck regulator, allowing the buck output to maintain regulation during a battery dropout event such as cold cranking.
For Cold Crank applications, the Channel 2 Boost has an adjustable output and is active when the VBAT input voltage falls below a user-programmable threshold. The boost channel can also be configured as...