Manhatten Brand's Products

AP3513E

Document number: DS36692 Rev. 2 - 2

1 of 11

www.diodes.com

January 2014

AP3513E

A Product Line of

Diodes Incorporated

NEW PROD UCT

18V, 3A SYNCHRONOUS DC-DC BUCK CONVERTER

Description

The AP3513E is a 500kHz fixed frequency, current mode, PWM

synchronous buck (step-down) DC-DC converter, capable of driving a

3A load with high efficiency, excellent line and load regulation. The

AP3513E exhibits high efficiency at light load. The device integrates

N-channel power MOSFET switch with low on-resistance. Current

mode control provides fast transient response and cycle-by-cycle

current limit.

The AP3513E employs complete protection to ensure system

security, including output Over Voltage Protection, input Under

Voltage Lock Out, programmable Soft-start, Over Temperature

Protection and hiccup mode Short Circuit Protection.

This IC is available in SO-8EP package.

Features

 Input Voltage Range: 4.5V to 18V

 Fixed 500kHz Frequency

 High Efficiency at Light Load

 Output Current: 3A

 Current Mode Control

 Built-in Over Current Protection

 Built-in Thermal Shutdown Function

 Built-in UVLO Function

 Built-in Over Voltage Protection

 Programmable Soft-start

 Hiccup Mode SCP

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

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

Pin Assignments

(Top View)

(SO-8EP/ MP Package)

Applications

 Monitor

 TV

 STB

 Datacom

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.

Typical Applications Circuit

OUT

22μF*2

100k

Optional

10nF

0.1μF

AP3513E

GND

COMP

Input Voltage=12V

Output Voltage=3.3V

10μF*2

4.7μH

3.3nF

13k

10k

26.1k

GND

COMP