Datasheet Summary
Dual Synchronous, 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator
Features n High Efficiency: Up to 95% n Very Low Quiescent Current: Only 40μA n Low Output Ripple Burst Mode® Operation n 2.25MHz Constant-Frequency Operation n High Switch Current: 0.7A and 1.2A n No Schottky Diodes Required n Low RDS(ON) Internal Switches: 0.35Ω n Current Mode Operation for Excellent Line and Load Transient Response n Short-Circuit Protected n Low Dropout Operation: 100% Duty Cycle n Ultralow Shutdown Current: IQ < 1μA n Output Voltages from 5V down to 0.6V n Power-On Reset Output n Externally Synchronizable Oscillator n Small Thermally Enhanced MSOP and 3mm × 3mm
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