AP2128 BCDSEMI [BCD Semiconductor Manufacturing Limited], AP2128 Datasheet

AP2128

Manufacturer Part Number

AP2128

Description

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

Manufacturer

BCDSEMI [BCD Semiconductor Manufacturing Limited]

Datasheet

1.AP2128.pdf (15 pages)

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Download datasheet (520Kb)

General Description

The AP2128 Series are positive voltage regulator ICs

fabricated by CMOS process. The AP2128 provides

two kinds of output voltage operation modes for

setting the output voltage. Fixed output voltage mode

senses the output voltage on V

voltage mode needs two resistors as a voltage divider

The AP2128 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.

AP2128 has 1.0V, 1.2V, 3.3V fixed voltage version and

0.8V to 4.5V adjustable voltage version.

AP2128 series are available in SOT-23-5 Package.

Jun. 2008 Rev. 1.1

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

OUT

, adjustable output

Figure 1. Package Type of AP2128

SOT-23-5

Features

Applications

Wide Operating Voltage: 2.5V to 6V

Low Dropout Voltage (3.3V only):

170mV@300mA

High Output Voltage Accuracy: ±2%

High Ripple Rejection:

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

Excellent Line/Load Regulation

Soft Start Time

Auto Discharge Resistance: R

Datacom

Notebook Computers

Mother Board

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

BCD Semiconductor Manufacturing Limited

and C

: 50µs

OUT

DS(ON)

Data Sheet

=60Ω

AP2128

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