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General Description

The ML63S is a group of PFM Step-up DC/DC converter IC with low supply current by CMOS process.

It consists of an oscillator, a PFM control circuit, a Lx switch driver transistor, a reference voltage unit, an error amplifier for voltage detection and a Lx switch protection circuit. It is suitable for use with battery-powered instruments with low noise and low supply current.

Features

● Small number of external components: inductor, diode and

capacitor.

● Ultra low input current : Typical 7uA

● Output Voltage Accuracy : +/-2.5

● Low ripple and noise

● Low startup voltage : Max 0.9V (with 1mA input)

● High Efficiency: Typical 85

● Package Available:

SOT-89 (500mW), SOT-23 (150mW)& TO-92

(300mW)

Application

◆ Power Source of Portable Products

◆ Palmtops

◆ Portable Cameras and Video Recorders

◆ Wireless mouse and keyboard