SC46166

SC46166 300mA ,500KHZ HIGH EFFICIENCY STEP-UP DC/DC CONVERTER DESCRIPTION The SC46166 is a compact, high efficiency, and low voltage step-up DC/DC converter, includes an error amplifier, ramp generator, current comparator, slope compensation, current sense and driver. Peak current mode PWM control with internal compensation reduces external parts count and provides a stable and high efficient operation over a wide range of load currents. The low start-up input voltage below 0.85V makes SC46166 suitable for 1 to 4 battery cells applications. A high switching frequency of 500kHz minimizes overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The SC46166 shifts automatically to Power Saving Mode operation at light loads, the 20uA low quiescent current together with high efficiency maintains long battery lifetime. The device also features low shutdown current of under 1μA. SOT-23-6 SOT-89-5 FEATURES APPLICATIONS * 0.85V Low Start-up Input Voltage * High Supply Capability to Deliver 3.3V 100mA with 1 Alkaline Cell * Automatic Power Saving Mode Operation with 20μA Quiescent Supply Current * Up to 90% Efficiency * Output Range: 2.5V to 6V * Shutdown Mode Supply Current :