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: 0.1µA Typical

• Low Quiescent Current: 25µA Typical

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

• Maximum Output Current: More Than 150mA

(300mA Limit)

• Extremely Low Noise: 30µVrms (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 1µF)

Applications

• Mobile Phones, Cordless Phones

• MP3/4

• Portable Electronic Devices

• Cameras, Video Recorders

• Sub-board Power Supplies for Telecom Equipment

• Battery Powered Equipment