AP2129_09 Datasheet, PDF (1/15 Pages) BCD Semiconductor Manufacturing Limited – 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
General Description
Features
AP2129
The AP2129 is a 300mA, positive Voltage regulator
ICs fabricated by CMOS process. The AP2129
provides two kinds of output voltage operation modes
for setting the output voltage. Fixed output voltage
mode senses the output voltage on V_OUT, adjustable
output voltage mode needs two resistors as a voltage
divider
The AP2129 Series have features of low dropout
voltage, low noise, high output voltage accuracy, and
low current consumption which make them ideal for
use in various battery-powered devices.
AP2129 has 1.0V, 1.2V, 3.3V fixed voltage version and
0.8V to 4.5V adjustable voltage version.
AP2129 series are available in SOT-23-5 Package.
· Wide Operating Voltage: 1.8V to 6V
· High Output Voltage Accuracy: ±2%
· High Ripple Rejection:
65dB@ f=1kHz, 45dB@ f=10kHz
· Low Standby Current: 0.1µA
· Low Quiescent Current: 60µA Typical
· Low Output Noise: 60µVrms
· Short Current Limit: 50mA
· Over Temperature Protection
· Compatible with Low ESR Ceramic Capacitor:
1µF for C_IN and C_OUT
· Excellent Line/Load Regulation
· Soft Start Time: 50µs
· Auto Discharge Resistance: R_DS(ON)=60Ω
Applications
· Datacom
· Notebook Computers
· Mother Board
Oct. 2009 Rev. 1.1
SOT-23-5
Figure 1. Package Type of AP2129
BCD Semiconductor Manufacturing Limited
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