AP6501

Document number: DS36059 Rev. 1 - 2

1 of 15

www.diodes.com

September 2012

© Diodes Incorporated

AP6501

340kHz 23V 2A SYNCHRONOUS DC/DC BUCK CONVERTER

Description

The AP6501 is a 340kHz switching frequency external compensated

synchronous DC/DC buck converter. It has integrated low RDSON

high and low side MOSFETs.

The AP6501 enables continues load current of up to 2A with

efficiency as high as 95%.

The AP6501 features current mode control operation, which enables

fast transient response times and easy loop stabilization.

The AP6501 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 AP6501 is available in a standard Green SO-8 and SO-8EP

package with exposed PAD for improved thermal performance and is

RoHS compliant.

Pin Assignments

COMP

SW

GND

BS

EN

FB

SS

( Top View )

1

2

3

4

8

7

6

5

IN

SO-8EP

Figure 1. Package Pin Out

Features

•

VIN 4.75V to 23V

•

2A continuous Output Current, 3A Peak

•

VOUT Adjustable to 0.925 to 20V

•

340kHz Switching Frequency

•

Programmable Soft-Start

•

Enable Pin

•

Protection

OCP

Thermal Shutdown

•

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

•

Halogen and Antimony Free. “Green” Device (Note 3)

Applications

•

Gaming Consoles

•

Flat Screen TV Sets and Monitors

•

Set Top Boxes

•

Distributed Power Systems

•

Home Audio

•

Consumer Electronics

•

Network Systems

•

FPGA, DSP and ASIC Supplies

•

Green Electronics

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)

and <1000ppm antimony compounds.

Typical Application Circuit

Figure 2. Typical Application Circuit

0

0.4

0.8

1.2

1.6

2

LOAD CURRENT (A)

Efficiency vs. Load Current

L = 10µH

V

= 3.3V

OUT

40

50

60

70

80

90

100

V

= 5V

IN

V

= 12V

IN