LTC3801 - Linear Technology

LTC3801 Micropower Constant Frequency Step-Down DC/DC Controllers

U U LTC3801/LTC3801B Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT FEATURES s High Efficiency: Up to 94% s Very Low No-Load Quiescent Current: Only 16µA (LTC3801) s High Output Currents Easily Achieved s Internal Soft-Start s Wide VIN Range: 2.4V to 9.8V s Low Dropout: 100% Duty Cycle s Constant Frequency 550kHz Operation s Burst Mod.

Features

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