
MC33063AVP
Plastic DIP
Order this document by MC34063A/D
DC–to–DC CONVERTER
CONTROL CIRCUITS
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
P, P1 SUFFIX
PLASTIC PACKAGE
CASE 626
PIN CONNECTIONS
SEMICONDUCTOR
TECHNICAL DATA
8
1
1
8
1
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Driver
Collector
Ipk Sense
VCC
Comparator
Inverting
Input
(Top View)
Device
Operating
Temperature Range
Package
ORDERING INFORMATION
MC33063AD
MC33063AP1
TA = – 40
°
to +85
°
C
SO–8
Plastic DIP
MC33063AVD
TA = –40
°
to +125
°
C
SO–8
2
3
4
5
6
7
8
MC34063AD
SO–8
MC34063AP1
TA = 0
°
to +70
°
C
Plastic DIP
1
MOTOROLA ANALOG IC DEVICE DATA
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.
Operation from 3.0 V to 40 V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.5 A
Output Voltage Adjustable
Frequency Operation to 100 kHz
Precision 2% Reference
Representative Schematic Diagram
S Q
R
Q2
Q1
100
OsIpk
Comparator
+
–
1.25 V
Reference
Regulator
1
2
3
4
5
6
7
8
Drive
Collector
Ipk
Sense
VCC
Comparator
Inverting
Input
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
(Bottom View)
This device contains 51 active transistors.
Motorola, Inc. 1996
Rev 5