MC34063A Datasheet, PDF (1/8 Pages) ON Semiconductor – DC-to-DC CONVERTER CONTROL CIRCUITS

MC34063A/MC33063A
SMPS Controller
www.fairchildsemi.com
Features
• Operation from 3.0 to 40V input
• Short circuit current limiting
• Low standby current
• Output switch current of 1.5A without external transistors
• Output voltage adjustable
• Frequency of operation from 100Hz to 100KHz
• Step up, Step down or inverting switching regulators
Description
The MC34063A/MC33063A is a monolithic regulator sub
system intended for use as DC to DC converter. This 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 regulators as well as for series pass regulators.
8-DIP
1
8-SOP
1
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.2