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AT1741

Preliminary Product Information

2-Channel PWM Controller for CCFL Backlight

Features

鈥?High-accuracy reference voltage circuit (鹵2%).

鈥?Built-in short-circuit protection circuit.

鈥?Built-in Undervoltage Lockout protection.

鈥?Internal 2.5V Reference supply.

鈥?Variable Dead time provides control over total

Range.

General Description

The AT1741 is 2-channel PWM switching

regulator controllers that contains an on-chip 2.5V

reference, two error amplifier, an adjustable

oscillator, two dead-time comparators, under-

voltage lockout circuitry and 2 common-emitter

output. It is idea for step-up, step-down, and

inverting converter.

Applications

鈥?LCD CCFL Backlight

鈥?Portable equipment

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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