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AT1366

Preliminary Product Information

1MHz,800mA Synchronous Buck Controller

Features

鈥?High efficiency (95%) possible

鈥?No Schottky Diode Required

鈥?800mA Output Current at 5V input 3.3V output

鈥?Oscillation frequency 1.0MHz

鈥?Built-in ON/OFF Function

鈥?Low Dropout Operation: 100% Duty Cycle

鈥?Stand-by current max. 1碌A(chǔ)

鈥?Input voltage: 2.5V ~5.5V

General Description

The AT1366 provides complete control for a

DC/DC converter optimized for high-performance

microprocessor applications. It is operated on

current mode architecture for excellent line and

load transient response. 1MHz operation frequency

is allowing the use of small surface mount inductor

and capacitor. The internal synchronous switch

increases efficiency and eliminates the need for an

external Schottky diode. The AT1366 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.

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

05/04/21

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