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