FEATURES z High Efficiency z 1.5MHz Constant Switching Frequency z 800mA Available Load Current z 270μA Typical Quiescent Current z 2V to 6V Input Voltage Range z Adjustable Output Voltage as Low as 0.6V z 100% Duty Cycle Low Dropout Operation z No Schottky Diode Required z Short Circuit and Thermal Protection z Over Voltage Protection z ＜ 1μA Shutdown Current z Available in SOT23-5 Package z RoHS Compliant and 100% Lead(Pb)-Free