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General Description

The AP2122 series are positive voltage regulator ICs fabricated by CMOS process. Each of these ICs consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection and a chip enable circuit .

Features

? Low Dropout Voltage at IOUT=100mA: 150mV

Typical (Except 1.5V Version)

? Low Standby Current: 0.1?A Typical

? Low Quiescent Current: 25?A Typical

? High Ripple Rejection: 70dB Typical（f=10kHz）

? Maximum Output Current: More Than 150mA

(300mA Limit)

? Extremely Low Noise: 30?Vrms (10Hz to

100kHz)

? Excellent Line Regulation: 4mV Typical

? Excellent Load Regulation: 12mV Typical

? High Output Voltage Accuracy: ±2

? Excellent Line and Load Transient Response

? Compatible with Low ESR Ceramic Capacitor (as

Low as 1?F)

Applications

? Mobile Phones, Cordless Phones

? MP3/4

? Portable Electronic Devices

? Cameras, Video Recorders

? Sub-board Power Supplies for Telecom Equipment

? Battery Powered Equipment