LTC3703-5, Buck 48V to 3.3V/6A Synchronous Step-Down Converter

Circuit shows LTC3703-5 is a synchronous switching regulator controller that provides direct step-down conversion of a typical 48V telecom input rail to 3.3V at 6A. The circuit can handle input transients up to 60V without requiring protection devices or 80V if appropriate MOSFETs are used