AP6507

500 kHz 18V 3A SYNCHRONOUS DC/DC BUCK CONVERTER

AP6507

Document number: DS33435 Rev. 2 - 2

1 of 13

www.diodes.com

May 2011

© Diodes Incorporated

Description

The AP6507 is a 500kHz switching frequency internal

compensated synchronous DCDC buck converter. It has

MOSFETs.

The AP6507 enables continues load current of up to 3A with

efficiency as high as 93%.

The AP6507 features current mode control operation, which

enables fast transient response times and easy loop

stabilization.

The AP6507 simplifies board layout and reduces space

requirements with its high level of integration and minimal

need for external components, making it ideal for distributed

power architectures.

The AP6507 is available in a standard Green SO-8EP

package

with

exposed

PAD

for

improved

thermal

performance and is RoHS compliant.

Pin Assignments

FB

SW

BST

IN

VCC

EN

GND

( Top View )

1

2

3

4

8

7

6

5

SW

SO-8EP

Features

•

•

•

500kHz switching frequency

•

Enable pin

•

Protection:

o

OCP

o

Thermal Shutdown

•

Lead Free Finish/ RoHS Compliant (Note 1)

Applications

•

Gaming Consoles

•

TV sets and Monitors

•

Set Top Boxes

•

Distributed power systems

•

Home Audio

•

Consumer electronics

Note:

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

.

Typical Application Circuit

40

50

60

70

80

90

100

0

2

1

3

LOAD CURRENT (A)

Efficiency vs. Load Current

V

= 12V

V

= 5V

IN

IN

V

= 2.5V

OUT