SMPS Controller. MC33063A Datasheet

MC33063A Controller. Datasheet pdf. Equivalent


Fairchild Semiconductor MC33063A
June 2008
MC34063A / MC33063A
SMPS Controller
Features
ƒ Operation from 3.0 to 40V Input
ƒ Short Circuit Current Limiting
ƒ Low Standby Current
ƒ Output Switch Current of 1.5A Without External
Transistors
ƒ Adjustable Output Voltage
ƒ Frequency of Operation from 100Hz to 100KHz
ƒ 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


MC33063A Datasheet
Recommendation MC33063A Datasheet
Part MC33063A
Description SMPS Controller
Feature MC33063A; MC34063A / MCC33063A— SMPS Controller June 2008 MC34063A / MC33063A SMPS Controller Features ƒ Op.
Manufacture Fairchild Semiconductor
Datasheet
Download MC33063A Datasheet




Fairchild Semiconductor MC33063A
Block Diagram
DRI VE
SWITCH
COLLECTOR COLLECTOR
81
1.25V
REF
VTG
COMP
5
COMPARATOR
I NV ERTING
I NP UT
S
Q
4
GND IP K SENSE
TIMIN G
C APA CITOR
7
3
* VCC(6)
OSCILLATOR
R
Figure 1. Block Diagram
Q2
Q1
RD
2
© 2001 Fairchild Semiconductor Corporation
MC34063A/MC33063A • Rev. 1.0.3
2
www.fairchildsemi.com



Fairchild Semiconductor MC33063A
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
VCC
VI(COMP)
VC(SW)
VE(SW)
VCE(SW)
VC(DR)
ISW
TSTG
PD
Parameter
Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage
Switch Collector to Emitter Voltage
Driver Collector Voltage
Switch Current
Storage Temperature Range
Power Dissipation
SOP
DIP
Min.
-0.3
-65
Max.
40
+40
40
40
40
40
1.5
+150
0.8
1
Unit
V
V
V
V
V
V
A
°C
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
IDISCHG
V(OSC)
K
VSENSE(CL)
Charging Current
Discharging Current
Oscillator Amplitude
Discharge-to-Charge Current Ratio
Current Limit Sense Voltage
VCC=5 to 40V, TA=25°C
VCC=5 to 40V, TA=25°C
TA=25°C
V7=VCC, TA=25°C
ICHG=IDISCHG, TA=25°C
22 31
140 190
0.5
5.2 6.1
250 300
Output Switch
VCE(SAT)1
VCE(SAT)2
Saturation Voltage 1(1)
Saturation Voltage 2(1)
GI(DC)
DC Current Gain(1)
IC(OFF)
Collector Off-State Current(1)
ISW=1.0A, VC(driver)=VC(SW)
ISW=1.0A, VC(driver)=50mA
ISW=1.0A,
VCE=5.0V, TA=25°C
VCE=40V, TA=25°C
0.95
0.45
50 180
0.01
Comparator
VTH
ΔVTH
IBIAS
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
VCC=3 to 40V
VI=0V
1.21 1.24
2
50
Total Device
ICC Supply Current
MC34063
MC33063
VCC=5 to 40V, CT=0.001µF,
V7=VCC, V5>VTH, pin 2=GND
Note:
1. Output switch tests are performed under pulsed conditions to minimize power dissipation.
42
260
7.5
350
1.30
0.70
100.00
1.29
5
400
4
5
µA
µA
V
mV
V
V
µA
V
mV
nA
mA
© 2001 Fairchild Semiconductor Corporation
MC34063A/MC33063A • Rev. 1.0.3
3
www.fairchildsemi.com







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