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AT1392

Preliminary Product Information

1-Channel Synchronous Buck PWM Controller

General Description

The AT1392 provides complete control and

protection for a DC/DC converter optimized for

high-performance microprocessor applications. It

is designed to drive one P-Channel and one N-

Channel in a buck topology. The AT1392

integrates all of the control, output adjustment into

a single package. The output voltage of the

converter can be precisely regulated with a

maximum tolerance of

鹵2%

over temperature and

line voltage variations. The AT1392 is a family of

low-noise synchronous step-down DC/DC

converters that is ideally suited for systems

powered from a 1-cell Li-ion battery or from a 3-

cell to 4-cell NiCd, NiMH, or alkaline battery. It

can also be used to USB-Based power system.

Features

鈥?High efficiency

鈥?Using external P and N channel MOSFET

鈥?Maximum Duty 100%

鈥?Oscillation frequency 600KHz

鈥?Soft Start by an external capacity

鈥?Output voltage accuracy

鹵2%

鈥?Built-in ON/OFF Function

鈥?Stand-by current max. 10碌A

鈥?Quiescent Current 1mA

鈥?Input voltage: 2.5V ~7.0V

Applications

鈥?Power Supply for portable devices

Block Diagram

Aimtron reserves the right without notice to change this circuitry and specifications.

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

WWW:

http://www.aimtron.com.tw

Fax: 886-3-563-0879

Email:

service@aimtron.com.tw

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