CP9743

2-Channel Switching Regulator Controller

* All specs and applications shown above subject to change without prior notice.

1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU ,

TAOYUAN, TAIWAN

Email: server@ceramate.com.tw

Tel:886-3-3214525

Http: www.ceramate.com.tw

Fax:886-3-3521052

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Rev 1.1 Apr.19, 2004

The CP9743 is a 2-channel switching regulator controller that uses a pulse width modulation (PWM) system. Both

channels can be used for DC / DC converter operations including step up, step down, and inverting. Because the IC is

compactly packaged, it is best suited for use as a power supply in portable equipment.

FApplications

DC / DC converters in VCRs, notebook computers, etc.

FFeatures

1) Built-in reference voltage current (

±1%).

2) Timer latch, short-circuit protection circuit is built in.

3) Circuit to prevent malfunction during low input volt-

age is built in.

4) Built-in reference voltage (2.505V) output pin.

5) Rest period is adjustable over the whole range of

duty ratio.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_)