June 2008
MC34063A / MC33063A
SMPS Controller
Features
Operation from 3.0 to 40V Input
Short Circuit Current Limiting
Low Standby Current
Output Switch Current of 1.5A Without External
Transistors
Adjustable Output Voltage
Frequency of Operation from 100Hz to 100KHz
Step-up, Step Down, or Inverting Switching
Regulators
Description
The MC34063A/MC33063A is a monolithic regulator
subsystem intended for a DC to DC converter. The
device contains a temperature-compensated bandgap
reference, a duty cycle control oscillator, driver, and
high-current output switch. It can be used for step-
down, step-up, or inverting switching and series pass
regulators.
8-DIP
8-SOP
Ordering Information
Part Number
MC34063AP
MC34063AD
MC33063AP
MC33063AD
Operating
Temperature Range
0 ~ +70°C
0 ~ +70°C
-40 ~ +85°C
-40 ~ +85°C
Eco Status
RoHS
RoHS
RoHS
RoHS
Package
8-DIP
8-SOP
8-DIP
8-SOP
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2001 Fairchild Semiconductor Corporation
MC34063A/MC33063A • Rev. 1.0.3
www.fairchildsemi.com
