MAX1649 Datasheet, Maxim

o o o o o o o More than 90% Efficiency (10mA to 1.5A Loads) More than 12.5W Output Power Less than 0.3V Dropout Voltage at 500mA 100µA Max Quiescent Supply Current 5µA Ma.

PDAs High-Efficiency Step-Down Regulation 5V-to-3.3V Green PC Applications Battery-Powered Applications * Dice are test.

The MAX1649/MAX1651 BiCMOS, step-down, DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2.5A. A unique, currentlimited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of puls.