Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator Features: High Efficiency: Up to 95% Very Low Quiescent Current: Only 40µA 2.25MHz Constant Frequency Operation High Switch Current: 1.2A on Each Channel No Schottky Diodes Required Low RDS(ON) Internal Switches: 0.35 Current Mode Operation for Excellent Line and Load Transient Response Short-Circuit Protected Low Dropout Operation: 100% Duty Cycle Ultralow Shutdown Current: IQ < 1µA Output Voltages from 5V down to 0.6V Power-On Reset Output Externally Synchronizable Oscillator Small Thermally Enhanced MSOP and 3mm × 3mm DFN Packages AEC-Q100 Qualified for Automotive Applications