Copyright

© ANPEC Electronics Corp.

Rev. A.2 - Dec., 2012

APW7334

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.

2A 24V 340kHz synchronous Buck Converter

Features

General Description

•

Wide Input Voltage from 4.5V to 24V

•

2A Continuous Output Current

•

Adjustable Output Voltage from 0.8V 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-8 Package

•

Lead Free and Green Devices Available

(RoHS Compliant)

Applications

•

LCD Monitor/TV

•

Set-Top Box

•

DSL, Switch HUB

•

Notebook Computer

APW7334 is a 2A synchronous buck converter with inte-

grated power MOSFETs. The APW7334 design with a cur-

rent-mode control scheme, can convert wide input volt-

age of 4.5V to 24V to the output voltage adjustable from

0.8V to 20V to provide excellent output voltage regulation.

The APW7334 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 APW7334 is also equipped with Power-on-reset, soft-

start, soft-stop, and whole protections (under-voltage,

over-temperature, and current-limit) into a single package.

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

system solution external components and PCB area.

Simplified Application Circuit

Pin Configuration

APW7334

BS

VIN

LX

GND

1

2

3

4

SS

EN

COMP

FB

8

7

6

5

APW7334

SOP-8

(Top View)