Ultra-Low-Noise, High PSRR, Low-Dropout, 300mA Linear Regulator

Copyright

© ANPEC Electronics Corp.

Rev. A.1 - Sep., 2005

APL5312

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Features

General Description

The APL5312 is a ultra low noise, low dropout linear

regulator, which operate from 2.3V to 6V input voltage

and deliver up to 300mA. Typical dropout voltage is

only 290mV at 300mA loading. Designed for use in

RF applications, the high PSRR 74dB and low noise

36

µV

Design with an internal P-channel MOSET pass

element, the APL5312 maintain a low supply current,

independent of the load current and dropout voltage.

Other features include thermal-shutdown protection

and current limit protection to ensure specified output

current and controlled short-circuit current. The

APL5312 regulator come in a miniature SOT23-5 and

SC70-5 package.

Applications

•

Wide Operating Voltage: 2.3V~6V

•

Low Dropout Voltage: 290mV @ 3V/300mA

•

Fixed Output Voltages: 1.5V~3.5V

with step 100mV, 2.85V

•

Guaranteed 300mA Output Current

•

High PSRR: 74dB before 10KHz

•

Low Output Noise: 36

µV

to 100KHz

•

Current Limit Protection

•

Controlled Short Circuit Current: 50mA

•

Over Temperature Protection

•

Stable with 1

µF Capacitor for Any Load

•

Excellent Load/Line Transient

•

SOT23-5 and SC70-5 Packages

•

Lead Free Available (RoHS Compliant)

•

Cellular Phones

•

Portable and Battery-Powered Equipment

•

Wireless LANs

•

GPS

Pin Configuration

GND

SHDN

BP

APL5312

1

2

3

4

5

SOT23-5/

SC70-5