AP6503A

Document number: DS36000 Rev. 4 - 2

1 of 15

www.diodes.com

March 2017

© Diodes Incorporated

AP6503A

240kHz 23V 3A SYNCHRONOUS DC/DC BUCK CONVERTER

Description

The AP6503A is a 240kHz switching frequency external compensated

and low-side MOSFETs.

The AP6503A enables continuous load current of up to 3A with

efficiency as high as 95%.

The AP6503A features current mode control operation, which enables

fast transient response time and easy loop stabilization.

The AP6503A 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 AP6503A is available in a standard Green SO-8EP package with

exposed PAD for improved thermal performance and is RoHS

compliant.

Features









240kHz 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)

Pin Assignments

COMP

SW

GND

BST

EN

FB

SS

(Top View)

1

2

3

4

8

7

6

5

IN

SO-8EP

Figure 1. Package Pin Out

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/quality/lead_free.html 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.