AP1513

PWM CONTROL 2A STEP-DOWN CONVERTER

AP1513 Rev. 1

1 of 8

JANUARY 2007

www.diodes.com

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Input voltage: 3.6V to 18V

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Duty ratio: 0% to 100% PWM control

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Oscillation frequency: 300KHz typ.

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Soft-start, Current limit, Enable function

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Thermal Shutdown function

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Built-in internal SW P-channel MOS

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

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Lead Free Finish/RoHS Compliant for Lead Free and

“Green” products (Note 1)

AP1513 consists of step-down switching regulator with PWM control.

These devices include a reference voltage source, oscillation circuit,

error amplifier, and internal PMOS.

AP1513 provides low-ripple power, high efficiency, and excellent

transient characteristics. The PWM control circuit is able to vary the

duty ratio linearly from 0 up to 100%. This converter also contains

an error amplifier circuit as well as a soft-start circuit that prevents

overshoot at startup. An enable function, an over current protect

function and a short circuit protect function are built inside, and

when OCP or SCP happens, the operation frequency will be

reduced from 300KHz to 30KHz. Also, an internal compensation

block is built in to minimum external component count.

With the addition of an internal P-channel Power MOS, a coil,

capacitors, and a diode connected externally, these ICs can

function as step-down switching regulators. They serve as ideal

power supply units for portable devices when coupled with the

SOP–8L mini-package, providing such outstanding features as

low current consumption. Since this converter can accommodate

an input voltage up to 18V, it is also suitable for the operation via

an AC adapter.

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PC Motherboard

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LCD Monitor

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Graphic Card

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DVD-Video Player

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Telecom Equipment

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ADSL Modem

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Printer and other Peripheral Equipment

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Microprocessor core supply

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Networking power supply

AP1513 X X X

Package

Packing

- U : Tube

-13 : Taping

S : SOP-8L

Lead-Free

L : Lead-Free

G : Green

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

Tube/Bulk

13” Tape and Reel

Device

(Note 2)

Package

Code

Packaging Quantity Part Number

Suffix

Quantity

Part Number

Suffix

AP1513S

S

SOP-8L

100

-U

2500/Tape & Reel

-13

Note:

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