AP2129 datasheet(1/15 Pages) BCDSEMI

Part #	AP2129

Description	300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

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Manufacturer	BCDSEMI [BCD Semiconductor Manufacturing Limited]

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300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

AP2129

Data Sheet

1

Oct. 2009 Rev. 1.1

BCD Semiconductor Manufacturing Limited

General Description

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 VOUT, 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.

Features

·

Wide Operating Voltage: 1.8V to 6V

·

High Output Voltage Accuracy:

±2%

·

High Ripple Rejection:

65dB@ f=1kHz, 45dB@ f=10kHz

·

Low Standby Current: 0.1

µA

·

Low Quiescent Current: 60

µA Typical

·

Low Output Noise: 60

µVrms

·

Short Current Limit: 50mA

·

Over Temperature Protection

·

Compatible with Low ESR Ceramic Capacitor:

1

µF for CIN and COUT

·

Excellent Line/Load Regulation

·

Soft Start Time

: 50

µs

·

Auto Discharge Resistance: RDS(ON)=60Ω

Applications

·

Datacom

·

Notebook Computers

·

Mother Board

Figure 1. Package Type of AP2129

SOT-23-5

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BCD Semiconductor Manuf...	AP2129	516Kb / 15P	300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
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