CM2576 Datasheet, PDF (4/12 Pages) Champion Microelectronic Corp. – 3A STEP DOWN VOLTAGE REGULATOR

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
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