AP139

300mA LOW-NOISE CMOS LDO

AP139 Rev. 6

1 of 7

FEBRUARY 2009

www.diodes.com

Lead-free

•

Very Low Dropout Voltage

•

Low Current Consumption: Typ. 45

μA, max. 60uA

•

Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V

3.3V, and 3.5V

•

Guaranteed 300mA Output

•

Input Range from 2.7 up to 5.5V

•

Thermal Shutdown

•

Current Limiting

•

Stability with Low ESR Capacitors

•

Low Temperature Coefficient

•

Lead Free Package: SOT25

•

SOT25: Available in “Green” Molding Compound

(No Br, Sb)

•

Lead Free Finish/RoHS Compliant (Note 1)

The AP139 is a positive voltage linear regulator utilizing CMOS

technology. The features that include low quiescent current

(45

μA typ.), low dropout voltage, and high output voltage

accuracy, make it ideal for battery applications. EN input

connected to the device will produce a low bias current.

The space-saving SOT25 package is attractive for “pocket” and

“hand held” applications.

This rugged device has both thermal shutdown, and current limit

protections to prevent device failure under the “worst” operating

conditions.

In a low noise, regulated supply application, a 10nF capacitor is

necessary to be placed in between Bypass and Ground.

The AP139 is stable with a low ESR output capacitor of 1.0

μF or

greater.

•

Personal Communication Devices

•

Home Electric/Electronic Appliances

•

PC Peripherals

•

Battery-Powered Devices

Output Voltage

Package

Packing

W : SOT25

Lead Free

G : Green

7 : Tape & Reel

L : Lead Free

AP139 - XX W X - 7

15:1.5V

18:1.8V

20:2.0V

25:2.5V

28:2.8V

30:3.0V

33:3.3V

35:3.5V

Device

Package

Code

Packaging

(Note 2)

7” Tape and Reel

Quantity

Part Number Suffix

AP139-XXWL-7

W

SOT25

3000/Tape & Reel

-7

AP139-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

Applications

Ordering Information