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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
Physical Dimensions
A
(.092) [Ø2.337]
PIN #1
[ ].400 10.15
.373 9.46
.036 [0.9 TYP]
.250±.005 [6.35±0.13]
(.032) [R0.813]
PIN #1
TOP VIEW
OPTION 1
7° TYP
B
[ ].070 1.78
.045 1.14
.310±.010 [7.87±0.25]
.130±.005 [3.3±0.13]
.210 MAX
[5.33]
7° TYP
TOP VIEW
OPTION 2
C
[ ].021 0.53
.015 0.37
.001[.025]
C
.015 MIN
[0.38]
[ ].140 3.55
.125 3.17
.100
[2.54]
NOTES:
A. CONFORMS TO JEDEC REGISTRATION MS-001,
VARIATIONS BA
B. CONTROLING DIMENSIONS ARE IN INCHES
REFERENCE DIMENSIONS ARE IN MILLIMETERS
C. DOES NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED
.010 INCHES OR 0.25MM.
D. DOES NOT INCLUDE DAMBAR PROTRUSIONS.
DAMBAR PROTRUSIONS SHALL NOT EXCEED
.010 INCHES OR 0.25MM.
E. DIMENSIONING AND TOLERANCING
PER ASME Y14.5M-1994.
.300
[7.62]
.430 MAX
[10.92]
.060 MAX
[1.52]
[ ].010+-..000005 0.254+-00..010207
N08EREVG
Figure 4. 8-Lead PDIP, JEDEC MS-001
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically
the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2001 Fairchild Semiconductor Corporation
MC34063A/MC33063A • Rev. 1.0.3
5
www.fairchildsemi.com