AP131

300mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

AP131 Rev. 1

1 of 7

NOVEMBER 2006

www.diodes.com

Lead-free

•

Input Voltage Range is up 2.7 to 5.5V

•

Dropout Voltage 400mV at 300mA Output Current

•

Guaranteed 300mA Output Current

•

Internal Ron = 1.5Ω PMOS draws no Base Current

•

Low Quiescent Current 50µA

•

Output Voltage: 1.5V/1.8V/2.0V/2.5V/2.8V/3.0V/3.3V/

3.5V; Accuracy 2%

•

Active Low Shutdown Function (EN pin)

•

Fast Transient Response

•

Good Load Regulation

•

Current Limit and Thermal Shutdown Protection

•

Short Circuit Current Fold-Back

•

Lead-Free

and Green Package: SOT89-5L is

available in Lead-Free only. SOT25 is available in both

Lead-Free and Green (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.

Ordering Information

AP 131 - XX X X X

Output Voltage

Package

15 :1.5V

18 :1.8V

20 :2.0V

25 :2.5V

28 :2.8V

30 :3.0V

33 :3.3V

35 :3.5V

Packing

Y : SOT89-5L

W : SOT 25

Lead Free

L : Lead Free Package

G:Green (Note 2)

-7/-13 : Taping

Note:

1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

2. Green is only available for SOT 25.

7” Tape and Reel

13” Tape and Reel

Device

Package

Code

Packaging

(Note 3)

Quantity

Part

Number

Suffix

Quantity

Part

Number

Suffix

AP131-XXY

Y

SOT89-5L

NA

NA

2500/Tape & Reel

-13

AP131-XXW

W

SOT25

3000/Tape & Reel

-7

NA

NA

Note:

3. 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