SC1462_05

High Output Current Charge Pump Doubler POWER MANAGEMENT Description The SC1462 is a versatile charge pump designed for use in battery operated power supply applications over the wide input range of 1.65 to 5.5 volts. A simple, low quiescent current charge pump doubler can be implemented without costly inductors or capacitors. Internal MOSFETs and control circuitry eliminate the need for costly board space and design time. The small 6 lead SOT-23 package helps minimize board space. The SC1462 charge pump can be used for applications that require up to 80mA of output current with VIN = 2.5V to 5.5V. Typical dropout voltage (2×VIN)-VOUT is shown below for several values of VIN. Typical Dropout Voltage vs. IOUT @TA = 25 Deg. C. 0.9 0.8 VIN = 1.5V VIN = 2.5V VIN = 3.6V VIN = 4.5V VIN = 5.5V SC1462 Features Input supply voltage range of 1.65V to 5.5V Small size - 6 pin SOT-23 package Typical efficiency of : 91% @ VIN = 2.5V, IOUT = 45mA 94% @ VIN = 3.6V, IOUT = 55mA Short circuit and over-temperature protection 140μA typical input current @ no load Shutdown current