General Description

The AP2120 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.

Features

• Low Dropout Voltage at IOUT=100mA: 200mV

Typical (Except 1.2V, 1.3V and 1.5V Versions)

• Low Quiescent Current: 25µA Typical

• High Ripple Rejection: 65dB Typical （ f=1kHz）

• Output Current: More Than 150mA (250mA

Limit)

• Extremely Low Noise: 15µVrms@VOUT=1.2V,

1.3V, 1.5V (10Hz to 100kHz)

• Excellent Line Regulation: 4mV Typical

• Excellent Load Regulation: 12mV Typical

• High Output Voltage Accuracy: ±2

• Excellent Line Transient Response and Load

Transient Response

• Compatible with Low ESR Ceramic Capacitor (as

Low as 1µF)

Applications

• Mobile Phones, Cordless Phones

• Wireless Communication Equipment

• Portable Games

• Cameras, Video Recorders

• Sub-board Power Supplies for Telecom Equipment

• Battery Powered Equipment