CM2576 查看數據表（PDF） - Champion Microelectronic

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CM2576

3A STEP DOWN VOLTAGE REGULATOR

Champion Microelectronic 

CM2576

3A STEP DOWN VOLTAGE REGULATOR

Note 1: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system

performance. Refer to Application Information for details.

Note 2: The oscillator frequency reduces to approximately 11KHz in the event of fault conditions, such as output short or

overload. And the regulated output voltage will drop approximately 40% from the nominal output voltage. This self-protection

feature lowers the average power dissipation by lowering the minimum duty cycle from 5% down to approximately 2%.

Note 3: For these parameters, FB is removed from VOUT and connected to +12V to force the output transistor OFF.

Note 4: VOUT pin sourcing current. No diode, inductor or capacitor connect to VOUT.

Note 5: FB is removed from VOUT and connected to 0V.

BLOCK DIAGRAM

2003/08/07 Preliminary Rev. 1.1

Champion Microelectronic Corporation

Page 4

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