Description

Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT Features: High Efficiency: Up to 94% Very Low No-Load Quiescent Current: Only 16µA (LTC3801) High Output Currents Easily Achieved Internal Soft-Start Wide VIN Range: 2.4V to 9.8V Low Dropout: 100% Duty Cycle Constant Frequency 550kHz Operation Burst Mode® Operation for High Efficiency at Light Loads (LTC3801) Burst Mode Operation Disabled for Lower Output Ripple at Light Loads (LTC3801B) Output Voltage as Low as 0.8V ±1.5% Voltage Reference Accuracy Current Mode Operation for Excellent Line and Load Transient Response Only 6µA Supply Current in Shutdown (LTC3801) Low Profile (1mm) SOT-23 Package