AP2122 Datasheet, PDF (1/20 Pages) BCD Semiconductor Manufacturing Limited – HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
General Description
Features
Data Sheet
AP2122
The AP2122 series are positive voltage regulator ICs _{· Low Dropout Voltage at IOUT=100mA: 150mV}
fabricated by CMOS process. Each of these ICs con-
Typical (Except 1.5V Version)
sists of a voltage reference, an error amplifier, a resis- _{· Low Standby Current: 0.1µA Typical}
tor network for setting output voltage, a current limit
circuit for current protection and a chip enable circuit .
·
·
Low Quiescent Current: 25µA Typical
High Ripple Rejection: 70dB Typicalčf=10kHzĎ
The AP2122 series feature high ripple rejection, low ^{· Maximum Output Current: More Than 150mA}
dropout voltage, low noise, high output voltage accu-
(300mA Limit)
racy, and low current consumption which make them ^{· Extremely Low Noise: 30µVrms (10Hz to}
ideal for use in various battery-powered devices.
100kHz)
· Excellent Line Regulation: 4mV Typical
The AP2122 series have 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, · Excellent Load Regulation: 12mV Typical
3.2V and 3.3V versions.
· High Output Voltage Accuracy: ±2%
· Excellent Line and Load Transient Response
The AP2122 are available in standard SOT-23-5 pack- _{· Compatible with Low ESR Ceramic Capacitor (as}
age.
Low as 1µF)
Applications
· Mobile Phones, Cordless Phones
· MP3/4
· Portable Electronic Devices
· Cameras, Video Recorders
· Sub-board Power Supplies for Telecom Equip-
ment
· Battery Powered Equipment
Sep. 2006 Rev. 1. 1
SOT-23-5
Figure 1. Package Type of AP2122
BCD Semiconductor Manufacturing Limited
1