CM2596 Datasheet, PDF (4/12 Pages) List of Unclassifed Manufacturers – 3A STEP DOWN VOLTAGE REGULATOR

CM2596
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 V_OUT and connected to +12V to force the output transistor OFF.
Note 4: V_OUT pin sourcing current. No diode, inductor or capacitor connect to V_OUT.
Note 5: FB is removed from V_OUT and connected to 0V.
BLOCK DIAGRAM
Vin 1
FB 4
GND 3
150KHz
Oscillator
R2*
Comparator
-
+
.
.
+
R1*
- _{Error Amplifier}
1.23V
Reference
Reset
Thermal Shutdown
&
Current Limit
Requlator
With
Enable
5 ENABLE
.
.
.
..
Driver
2 Vout
2005/03/04
Champion Microelectronic Corporation
Page 4