RT9261B VFM Step-up DC/DC Converter

RT9261B VFM Step-up DC/DC Converter

The RT9261B Series are VFM Step-up DC/DC converter ICs with ultra low supply current by CMOS process and suitable for use with battery-powered instruments. The RT9261B IC consists of an oscillator, a VFM control circuit, a driver transistor (LX switch), a reference voltage unit, an error amplifier, .

Features

z Minimal Number of External Components (Only an Inductor, a Diode, and a Capacitor) Ultra Low Input Current (6.5µA at Switch Off) Capable of Supplying 50mA Output Current with Internal Switch ±2% Output Voltage Accuracy Low Ripple and Low Noise Low Start-up Voltage, 0.8V at 1mA 80% Efficiency with Low Cost Inductor +50 ppm/°C Low Temperature-Drift SOT-89 and SOT-25 Small Packages z z z z z z Applications The CE pin enables the circuit to set the standby supply current at a maximum of 0.5µA. z z Power source for battery-powered equipment Power source for cameras, camcorders, VCRs, PDAs, pa.