Copyright

© ANPEC Electronics Corp.

Rev. A.6 - Apr., 2013

APW7313

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

3A 24V 340kHz synchronous Buck Converter

Features

General Description

•

Wide Input Voltage from 4.5V to 24V

•

3A Continuous Output Current

•

Adjustable Output Voltage from 0.925V to 20V

•

Intergrated High/Low Side MOSFET

•

PFM/PWM mode Operation

•

Fixed 340kHz Switching Frequency

•

Stable with Low ESR Ceramic Output Capacitors

•

Power-On-Reset Detection

•

Programmable Soft-Start

•

Over-Temperature Protection

•

Current-Limit Protection with Frequency Foldback

•

Enable/Shutdown Function

•

Small SOP-8P Package

•

Lead Free and Green Devices Available

(RoHS Compliant)

Applications

•

LCD Monitor/TV

•

Set-Top Box

•

DSL, Switch HUB

•

Notebook Computer

APW7313 is a 3A synchronous buck converter with inte-

grated 110m

Ω power MOSFETs. The APW7313 design

with a current-mode control scheme, can convert wide

input voltage of 4.5V to 24V to the output voltage adjust-

able from 0.925V to 20V to provide excellent output volt-

age regulation.

The APW7313 is equipped with an automatic PFM/PWM

mode operation. At light load, the IC operates in the PFM

mode to reduce the switching losses. At heavy load, the

IC works in PWM.

The APW7313 is also equipped with Power-on-reset, soft-

start, and whole protections (over-temperature, and cur-

rent-limit) into a single package.

This device, available SOP-8P, provides a very compact

system solution external components and PCB area.

Simplified Application Circuit

Pin Configuration

V

OUT

APW7313

V

IN

BS

VIN

LX

GND

1

2

3

4

SS

EN

COMP

FB

8

7

6

5

9

GND

APW7313

SOP-8P

(Top View)

9

Exposed Pad

The pin 4 must be connected to the pin 9 (Exposed Pad)