Low I

Copyright

© ANPEC Electronics Corp.

Rev. B.2 - May., 2005

APL5901/2

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

Applications

• Notebook Computer

•

PDA or Portable Equipments

• Noise-Sensitive Instrumentation Systems

•

Low Noise : 50

µV

• Low Quiescent Current : 50µA (No load)

• Low Dropout Voltage : 210mV (@900mA)

•

Very low Shutdown Current : < 1

µA

•

Fixed Output Voltage : 1.3V ~ 3.4V

•

Stable with 4.7

µF Output Capacitor

• Stable with Aluminum , Tantalum or Ceramic

Capacitors .

• Reverse Current Protection

• No Protection Diodes Needed

•

Built in Thermal Protection

•

Built in Current Limit Protection

• Controlled Short Circuit Current : 200mA

•

Fast Transient Response

•

Short Setting Time

• SOT-89, SOT-89-5, SOT-223, SO-8 ,TO-252

and TO-252-5 Packages

• Lead Free Available (RoHS Compliant)

Pin Configuration

SOT-89 (Top View)

GND

1

2

3

TAB is GND

SO-8 (Top View)

SOT-223 (Top View)

1

2

3

4

5

6

7

8

IN

GND

GND

SHDN

BYP

GND

GND

OUT

GND

1

2

3

TAB is GND

TO-252-5 (Top View)

TAB is GND

1

2

3

General Description

The APL5901/2 is micropower, low noise, low dropout

linear regulator. Operate from 2.7V to 6V input voltage

and deliver up to 900mA. Typical output noise is just

50

µV

capacitor in BP pin and typical dropout voltage is only

210mV at 900mA loading. Designed for use in bat-

tery-powered system, the low 50

µA quiescent cur-

rent makes it an ideal choice.

TO-252 (Top View)

APL5901

BP

GND

SHDN

SOT-89-5 (Top View)

GND

1

2

3

5

4

SHDN

BP

GND

Design with an internal P-channel MOSFET pass

transistor, the APL5901/2 maintains a low supply

current, independent of the load current and dropout

voltage. Other features include rev erse current

protection, thermal-shutdown protection, current limit

protection to ensure specified output current and con-

trolled short-circuit current. The APL5901/2 regulator

come in a miniature SOT-89, SOT-89-5, SOT-223, SO-

8, TO-252 and TO-252-5 packages.