MAX15062: PFM from 60v 3v3 or 5V @300mA
MAX15062 : 60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down, PFM, DC-DC Converter Product folder: http://www.maximintegrated.com/datasheet/index.mvp/id/7171 EvKits: 3.3 volt MAX15062AEVKIT http://www.maximintegrated.com/datasheet/index.mvp/id/8178 5 volt MAX15062BEVKIT http://www.maximintegrated.com/datasheet/index.mvp/id/8179