MICROCHIP
DC-DC Switching Sync- Buck(Step Down) Regulator, Adj., 4.5V-19V in, 0.7V-3.3V/5A out, 400kHz, QFN-20
DC/DC Switching Synchronous Buck Regulator, Adjustable, 4.5V-19V in, 0.7V-3.3V out, 5A, QFN-20