AP2004

PWM BUCK CONTROLLER

AP2004 Rev. 3

1 of 8

FEBRUARY 2009

www.diodes.com

Lead-free

•

PWM Buck Control Circuitry

•

Operating voltage can be up to 27V

•

Under voltage Lockout (UVLO) Protection

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Short Circuit Protection (SCP)

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Soft-start circuit

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Variable Oscillator Frequency -- 300Khz Max

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1.25V voltage reference Output

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8-pin SOP package

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SOP-8L: Available in “Green” Molding Compound

(No Br, Sb)

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Lead Free Finish/ RoHS Compliant (Note 1)

The AP2004 integrates Pulse-Width-Modulation (PWM) control

circuit into a single chip, mainly designs for power-supply

regulator. All the functions include an on-chip 1.25V reference

output, an error amplifier, an adjustable oscillator, a soft-start,

UVLO, SCP circuitry, and a push-pull output circuit. Switching

frequency is adjustable by trimming CT. During low VCC situation,

the UVLO makes sure that the outputs are off until the internal

circuit operates normally.

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Backlight inverter

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LCD Monitor

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CDROM, XDSL Product

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DC/DC converters in computers, etc.

AP 2004 S X - 13

Package

Packing

Lead Free

13 : Tape & Reel

G : Green

S : SOP-8L

L : Lead Free

Device

Package

Code

Packaging

(Note 2)

13” Tape and Reel

Quantity

Part Number Suffix

AP2004SL-13

S

SOP-8L

2500/Tape & Reel

-13

AP2004SG-13

S

SOP-8L

2500/Tape & Reel

-13

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