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Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
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product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
Is Now Part of
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
June 2008
© 2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3
MC34063A / MCC33063A— SMPS Controller
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 Inve rting 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-SOP
8-DI
P
Ordering Information
Part Number Operating
Temperature Range Eco Status Package
MC34063AP 0 ~ +70°C RoHS 8-DIP
MC34063AD 0 ~ +70°C RoHS 8-SOP
MC33063AP -40 ~ +85°C RoHS 8-DIP
MC33063AD -40 ~ +85°C RoHS 8-SOP
For Fairchild’s defini t i on of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 2
MC34063A / MC33063A — SMPS Controller
Block Diagram
5
18
2
7
3
4
COMP
OSCILLATOR
RD
Q2
Q1
SQ
R
1.25V
REF
VTG COMPARATOR
INVERTING
INPUT
D
R
IVE
COLLECTOR SWITCH
COLLECTO
R
GND I
PK
SENSE
TIMING
CAPACITOR
*V
CC
(6)
Figure 1. Block Diagram
© 2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 3
MC34063A / MC33063A — SMPS Controller
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol Parameter Min. Max. Unit
VCC Supply Voltage 40 V
VI(COMP) Comparator Input Voltage Range -0.3 +40 V
VC(SW) Switch Collector Voltage 40 V
VE(SW) Switch Emitter Voltage 40 V
VCE(SW) Switch Collector to Emitter Voltage 40 V
VC(DR) Driver Collector Voltage 40 V
ISW Switch Current 1.5 A
TSTG Storage Temperature Range -65 +150 °C
SOP 0.8
PD Power Dissipation DIP 1 W
Electrical Characteristics
VCC = 5.0V, TA = 0°C to +70°C for MC34063, TA = -40°C to +85°C for MC33063, unless otherwise specified.
Symbol Parameter Conditions Min. Typ. Max. Units
Oscillator
ICHG Charging Current VCC=5 to 40V, TA=25°C 22 31 42 µA
IDISCHG Discharging Current VCC=5 to 40V, TA=25°C 140 190 260 µA
V(OSC) Oscillator Amplitude TA=25°C 0.5 V
K Discharge-to-Charge Current Ratio V7=VCC, TA=25°C 5.2 6.1 7.5
VSENSE(CL) Current Limit Sense Voltage ICHG=IDISCHG, TA=25°C 250 300 350 mV
Output Switch
VCE(SAT)1 Saturation Voltage 1(1) I
SW=1.0A, VC(driver)=VC(SW) 0.95 1.30 V
VCE(SAT)2 Saturation Voltage 2(1) I
SW=1.0A, VC(driver)=50mA 0.45 0.70 V
GI(DC) DC Current Gain(1) ISW=1.0A,
VCE=5.0V, TA=25°C 50 180
IC(OFF) Collector Off-State Current(1) V
CE=40V, TA=25°C 0.01 100.00 µA
Comparator
VTH Threshold Voltage 1.21 1.24 1.29 V
ΔVTH Threshold Voltage Line Regulation VCC=3 to 40V 2 5 mV
IBIAS Input Bias Current VI=0V 50 400 nA
Total Device
MC34063 4
ICC Supply Current MC33063 VCC=5 to 40V, CT=0.001µF,
V7=VCC, V5>VTH, pin 2=GND 5
mA
Note:
1. Output switch tests are performed under pulsed conditions to minimize power dissipation.
© 2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 4
MC34063A / MC33063A — SMPS Controller
Typical Performance Characteristics
Figure 2. Temperature Drift (VTH) Figure 3. Temperature Drift (IOC)
© 2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 5
MC34063A / MC33063A — SMPS Controller
Physical Dimensions
C
7° TYP
7° TYP
.430 MAX
[10.92]
B
A.400
.373 [10.15
9.46 ]
.250±.005 [6.35±0.13]
.036 [0.9 TYP]
.070
.045 [1.78
1.14]
.100
[2.54]
.300
[7.62]
.060 MAX
[1.52]
.310±.010 [7.87±0. 25]
.130 ±.005 [3.3±0.13]
.210 MAX
[5.33]
.140
.125 [3.55
3.17]
.015 MIN
[0.38]
.021
.015 [0.53
0.37]
.010+.005
-.000 [0.254+0.127
-0.000 ]
PIN #1
PIN #1
(.032) [R0.813]
(.092) [Ø2.337]
TOP VIEW
OPTION 1 TOP VI EW
OPTION 2
.001[.025] C
N08EREVG
C. DOES NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
DAMBAR PROTRUSIONS SHALL NOT EXCEED
D. DOES NOT INCLUDE DAMBAR PROTRUSIONS.
B. CON T RO L ING DIMENSION S AR E IN INCHES
A. CONFOR MS TO JE DEC REGISTRATION MS- 001,
MOLD FLASH O R PROTRUSIONS SHALL NOT EXC EED
VARIATIONS BA
E. DIMENSIONING AND TOLERANCING
NOTES:
REFE RENCE DIMENSIONS ARE IN MILLIMETERS
.010 INCHE S OR 0.25M M .
.010 I NCHES OR 0.25MM.
PER ASME Y14.5M-1994.
Figure 4. 8-Lead PDIP, JEDEC MS-001
Pack age drawings are provided as a servic e t o customers c onsidering Fairchild components. Drawi ngs may change in any manner
without notice. P l ease note the revision and/or date on the drawing and contac t a Fairchild Semic onductor representat i ve 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 www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 6
MC34063A / MC33063A — SMPS Controller
Physical Dimensions
8°
0°
SEE DETAIL A
NOTES: UNLESS OTHERWISE SPECIFIED
A) THIS PACKAGE CONFORMS TO JEDEC
MS-012, VARIATION AA, ISSUE C,
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIME NSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
D) LANDPATTERN STANDARD: SOIC127P600X175-8M.
E) DRAWING FILENAME : M08AREV1 3
LAND PATTERN RECOMMENDATION
SEATING PLANE
0.10 C
C
GAGE PLANE
x 45°
DETAIL A
SCALE: 2:1
PIN ONE
INDICATOR 4
8
1
C
MBA0.25
B
5
A
5.60
0.65
1.75
1.27
6.20
5.80
3.81
4.00
3.80
5.00
4.80
(0.33) 1.27
0.51
0.33
0.25
0.10
1.75 MAX 0.25
0.19
0.36
0.50
0.25
R0.10
R0.10
0.90
0.406 (1.04)
OPTION A - BEVEL EDGE
OPTION B - NO BEVEL EDGE
Figure 5. 8-Lead, SOIC, JEDEC MS-012, .150 inch Narrow Body
Pack age drawings are provided as a service to customers considering Fairc hi l d components. Drawi ngs may change in any manner
without notice. P l ease note the revi sion and/or date on the drawing and contact a Fairchild Semic onductor representat i ve 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 www.fairchildsemi.com
MC34063A/MC33063A • Rev. 1.0.3 7
MC34063A / MC33063A — SMPS Controller
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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