MC34063A, MC33063A,
SC34063A, SC33063A,
NCV33063A
1.5 A, Step-Up/Down/
Inverting Switching
Regulators
www.onsemi.com
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.
MARKING
DIAGRAMS
8
3x063
ALYWA
G
8
1
SOIC−8
D SUFFIX
CASE 751
1
8
3x063V
ALYWA
G
Features
•
•
•
•
•
•
•
•
•
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
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
1
Drive 8
Collector
8
3x063AP1
AWL
YYWWG
PDIP−8
P, P1 SUFFIX
CASE 626
1
8
8
33063AVP
AWL
YYWWG
1
1
Switch
Collector
Q2
S Q
Q1
R
Ipk 7
Sense
1
100
DFN8
CASE 488AF
2
1
Switch
Emitter
33063
ALYWA
G
Ipk
Oscillator CT
6
VCC
3
Comparator
+
-
x
A
L, WL
Y, YY
W, WW
G or G
Timing
Capacitor
1.25 V
Reference
Regulator
Comparator 5
Inverting
Input
4
= 3 or 4
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
GND
(Bottom View)
This device contains 79 active transistors.
ORDERING INFORMATION
Figure 1. Representative Schematic Diagram
© Semiconductor Components Industries, LLC, 2016
December, 2016 − Rev. 24
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
1
Publication Order Number:
MC34063A/D
