AP2120 Datasheet, PDF (1/21 Pages) BCD Semiconductor Manufacturing Limited – HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
General Description
Features
Data Sheet
AP2120
The AP2120 series are positive voltage regulator ICs _{· Low Dropout Voltage at IOUT=100mA: 200mV}
fabricated by CMOS process. Each of these ICs con-
Typical (Except 1.2V, 1.3V and 1.5V Versions)
sists of a voltage reference, an error amplifier, a resis- _{· Low Quiescent Current: 25µA Typical}
tor network for setting output voltage, a current limit
circuit for current protection.
·
·
High Ripple Rejection: 65dB Typical （f=1kHz）
Output Current: More Than 150mA (250mA
The AP2120 series feature high supply voltage ripple
Limit)
rejection, low dropout voltage, low noise, high output ^{· Extremely Low Noise: 15µVrms@VOUT=1.2V,}
voltage accuracy, and low current consumption which
1.3V, 1.5V (10Hz to 100kHz)
make them ideal for use in various battery-powered · Excellent Line Regulation: 4mV Typical
devices.
· Excellent Load Regulation: 12mV Typical
· High Output Voltage Accuracy: ±2%
The AP2120 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, _{· Excellent Line Transient Response and Load}
2.8V, 3.0V, 3.2V, 3.3V and 5.0V versions.
Transient Response
· Compatible with Low ESR Ceramic Capacitor (as
The AP2120 are available in standard SOT-23 package.
Low as 1µF)
Applications
· Mobile Phones, Cordless Phones
· Wireless Communication Equipment
· Portable Games
· Cameras, Video Recorders
· Sub-board Power Supplies for Telecom Equip-
ment
· Battery Powered Equipment
Nov. 2009 Rev. 1. 0
SOT-23
Figure 1. Package Types of AP2120
BCD Semiconductor Manufacturing Limited
1