AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

AP131 Rev. 7

1 of 7

FEBRUARY 2009

www.diodes.com

Lead-free

•

Input Voltage Range is from 2.7 to 5.5V

•

Dropout Voltage 400mV at 300mA Output Current

•

Guaranteed 300mA Output Current

•

Internal Ron = 1.5

Ω PMOS draws no Base Current

•

Low Quiescent Current 50µA

•

Output Voltage: 1.5V/1.8V/2.0V/2.5V/2.8V/

•

2.9V/3.0V/3.3V/ 3.5V; Accuracy 2%

•

Active Low Shutdown Function (EN pin)

•

Fast Transient Response

•

Good Load Regulation

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Current Limit and Thermal Shutdown Protection

•

Short Circuit Current Fold-Back

•

Lead Free package: SOT25

•

SOT25: Available in “Green” Molding Compound

(No Br, Sb)

•

Lead Free Finish/RoHS Compliant (Note 1)

The AP131 is a 300mA, fixed output voltage, low dropout linear

regulator. The Device included pass element, error amplifier,

band-gap, current limit and thermal shutdown circuitry. The

device is ON when the EN pin is set to logic high level.

The characteristics of low dropout voltage and less quiescent

current make it good for some critical current applications, for

example, some battery powered devices. The typical quiescent

current is approximately 50µA from zero to maximum load. Due

to the internal flexible design, it results in extensively fixed output

voltage versions and makes it convenient to use for applications.

Built-in current-limit and thermal-shutdown functions prevent any

fault condition from IC damage. An external capacitor can be

connected to the BP pin and reduce the output noise.

Applications

•

Battery Powered Device

•

Wireless Communication

•

CD-ROM, DVD, and LAN Card

•

PC Peripheral

Ordering Information

Output Voltage

Package

Packing

W : SOT25

Lead Free

G : Green

7 : Tape & Reel

L : Lead Free

AP131 - XX W X - 7

15:1.5V

18:1.8V

20:2.0V

25:2.5V

28:2.8V

29:2.9V

30:3.0V

33:3.3V

35:3.5V

Device

Package

Code

Packaging

(Note 2)

7” Tape and Reel

Quantity

Part Number Suffix

AP131-XXWL-7

W

SOT25

3000/Tape & Reel

-7

AP131-XXWG-7

W

SOT25

3000/Tape & Reel

-7

Notes:

1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

Features

General Description