MC34063A MC33063A
MC34063A/MC33063A
SMPS Controller
DC-to-DC Converter
Control Circuits
PIN CONNECTIONS
The MC34063A Series is a monolithic control circuit
containing the primary functions required for DC-to-DC
converters. These devices consist of an internal temperature
compensated reference, comparator, controlled duty cycle
oscillator with an active current limit circuit, driver and high
current output switch. This series was specifically designed
to be incorporated in Step-Down and Step-Up and
Voltage-Inverting applications with a minimum number of
external components. Refer to Application Notes AN920A/D
and AN954/D for additional design information.
(Top View)
z Operation from 3.0V to 40V input
z Low Standby Current
ORDERING INFORMATION
z Current Limiting
Operating
Device
Package
z Output Switch Current to 1.5A
z Output Voltage Adjustable
z Frequency Operation to 100kHz
z Precision 2% Reference
Temperature Range
MC33063AD
MC33063AP1
MC34063AVD
MC34603AVP
MC34063AD
MC34063APS
SO-8
Plastic DIP
SO-8
TA=-40° to +85°C
TA=-40° to +125°C
TA=0° to +70°C
Plastic DIP
SO-8
DC-to-DC CONVERTER CONTROL CIRCUITS
SEMICONDUCTOR TECHNICAL DATA
Plastic DIP
Representative Schematic Diagram
P, P1 SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO-8)
This device contains 51 active transistors.
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