Copyright

© ANPEC Electronics Corp.

Rev. A.2 - Nov., 2012

APW7104A

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.

1.5MHz, 1A Synchronous Buck Regulator

Features

General Description

•

1A Output Current

•

Wide 2.7V~6.0V Input Voltage

•

Fixed 1.5MHz Switching Frequency

•

Low Dropout Operating at 100% Duty Cycle

•

Integrate Synchronous Rectifier

•

0.6V Reference Voltage

•

Current-Mode Operation with Internal

Compensation

- Stable with Ceramic Output Capacitors

- Fast Line Transient Response

•

Short-Circuit Protection

•

Over-Temperature Protection with Hysteresis

•

Available in SOT-23-5 Packages

•

Lead Free and Green Devices Available

(RoHS Compliant)

APW7104A is a 1.5MHz high efficiency monolithic syn-

chronous buck regulator. Design with current mode

scheme, the APW7104A is stable with ceramic output

capacitor. Input voltage from 2.7V to 6.0V makes the

APW7104A ideally suited for single Li-Ion battery pow-

ered applications. 100% duty cycle provides low dropout

operation, extending battery life in portable electrical

devices. The internally fixed 1.5MHz operating frequency

allows the using of small surface mount inductors and

capacitors. The synchronous switches included inside

increase the efficiency and eliminate the need of an ex-

ternal Schottky diode.

The APW7104A is available in SOT-23-5 packages.

Simplified Application Circuit

Applications

•

HD STB

•

BT Mouse

•

PND Instrument

•

Portable Instrument

VIN

GND

2

RUN

1

FB

5

APW7104A

SW 3

C2

10

µF

(MLCC)

L1

2.2

µH

C1

4.7

µF

(MLCC)

R2

4

R1

C3

(option)

Pin Configuration

4 VIN

5 FB

GND 2

SW 3

RUN 1

SOT-23-5 (Top View)

APW7104A