AP2008

PWM BUCK CONTROLLER

AP2008 Rev. 2

1 of 8

FEBRUARY 2009

www.diodes.com

Lead-free

•

PWM Buck Control Circuitry

•

Operating voltage can be up to 20V

•

Under voltage Lockout (UVLO) Protection

•

Short Circuit Protection (SCP)

•

Soft-start circuit

•

Variable Oscillator Frequency -- 300Khz Max

•

0.77V voltage reference Output

•

8-pin SOP package

•

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

(No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 1)

The AP2008 integrates Pulse-Width-Modulation (PWM) control

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

regulator. All the functions include an on-chip 0.77V 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 is operational normally.

Applications

•

Backlight inverter

•

LCD Monitor

•

XDROM, XDSL Product

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DC/DC converters in computers, etc.

Ordering Information

AP 2008 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

AP2008SL-13

S

SOP-8L

2500/Tape & Reel

-13

AP2008SG-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