AP6502A

Document number: DS35812 Rev. 4 - 2

1 of 14

www.diodes.com

August 2015

© Diodes Incorporated

AP6502A

240kHz 23V 2A SYNCHRONOUS DC/DC BUCK CONVERTER

Description

The AP6502A is a 240kHz switching frequency external compensated

and low side MOSFETs.

The AP6502A enables continues load current of up to 2A with efficiency

as high as 95%.

The AP6502A features current mode control operation, which enables

fast transient response times and easy loop stabilization.

The AP6502A 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 AP6502A is available in a standard Green SO-8EP package with

an exposed PAD for improved thermal performance and is RoHS

compliant.

Features





2A Continuous Output Current, 3A Peak





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

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 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)

Typical Applications Circuit

AP6502A

L1

10

μH

R1

26.1k

Ω

R2

10k

Ω

C5

10nF

C2

2 x 22

μF

C1

10

μF

C4

0.1

μF

ON

OFF

2

IN

8

SS

7

EN

6

COMP

3

SW

1

BST

5

FB

C3

6.8nF

R3

6.8k

Ω

4

GND

INPUT

OUTPUT

3.3V

Figure 2. Typical Application Circuit

SO-8EP

(Top View)

1

2

3

4

8

7

6

5

SS

EN

COMP

FB

BS

IN

SW

GND

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