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