AP139

300mA LOW-NOISE CMOS LDO

AP139 Rev. 2

1 of 7

MARCH 2007

www.diodes.com

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Very Low Dropout Voltage

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Low Current Consumption: Typ. 45µA, max. 60mA

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

3.3V, and 3.5V

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Guaranteed 300mA Output

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Input Range from 2.7 up to 5.5V

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Thermal Shutdown

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Current Limiting

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Stability with Low ESR Capacitors

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Low Temperature Coefficient

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Lead-free Package: SOT25

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SOT25: Available in “Green” Molding Compound (No

Br, Sb)

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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

(45µA 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 1.0µF or

greater.

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Personal Communication Devices

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Home Electric/Electronic Appliances

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PC Peripherals

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Battery-Powered Devices

AP139

XX X X X

W: SOT25

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

- 7 : Taping

Packing

Lead free

G : Green

L : Lead Free

Note:

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

7” Tape and Reel

Device

Package Code

Packaging

Quantity

Part Number Suffix

AP139-XXW

W

SOT25

3000/Tape & Reel

-7

Note:

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

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

Features

General Description

Applications

Ordering Information