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  ON Semiconductor Electronic Components Datasheet  

MC33232 Datasheet

Power Factor Controller

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MC33232
Power Factor Controller
The MC33232 is the monolithic Integrated Circuit using the
SMARTMOS® process as the new technology. And is active power
factor controller specially design for use as off−line power converter
application. This integrated circuit features an internal startup timer
for stand−alone application, a one quadrant multiplier for near unity
power factor, zero current detector to ensure critical condition
operation, transconductance error amplifier, quickstart circuit for
enhanced startup, trimmed internal bandgap reference, current sensing
comparator, a totem pole output ideally suited for drive a power
MOSFET, and a one shot−rigger circuit to eliminate a problem at the
light loading.
Also included are protective features consisting of an overvoltage
comparator to eliminate runaway output voltage due to removal, and a
protect circuit to eliminate thermal runaway. This device is available
in dual−in−line and surface mount plastic package.
Features
One Shot−trigger Circuit to Eliminate a Problem at the Light Loading
Overvoltage Comparator Eliminates Runaway Output Voltage
Quickstart Circuit for Enhanced Startup
Internal Startup Timer
One Quadrant Multiplier
Zero Current Detector
Trimmed 2% Internal Bandgap Reference
Totem Pole Output with High State Clamp
Undervoltage Lockout with 6.0 V of Hysteresis
Low Startup and Operating Current
Pb−Free Packages are Available
http://onsemi.com
SILICON MONOLITHIC
INTEGRATED CIRCUIT
MARKING
DIAGRAMS
PDIP−8
P SUFFIX
CASE 626
MC33232P
AWL
YYWW
SOIC−8
D SUFFIX
CASE 751
8
33232
ALYW
1
A = Assembly Location
WL or L = Wafer Lot
Y = Year
WW or W = Work Week
www.DataSheet4U.com
© Semiconductor Components Industries, LLC, 2005
March, 2005 − Rev. 1
PIN ASSIGNMENT
Voltage Feedback
Input
Compensation
1
2
Multiplier Input
Current Sense
Input
3
4
8 VCC
7 Drive Output
6 GND
5
Zero Current
Detect Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
www.DataSheet4U.com
1 Publication Order Number:
MC33232/D


  ON Semiconductor Electronic Components Datasheet  

MC33232 Datasheet

Power Factor Controller

No Preview Available !

MC33232
Zero Current
Detector
2.5 V
Reference
1.4 V
+
28 V
1.6 V/1.4 V
POR
5.3 V
+
UVLO
Timer
16 V
TSD
8
5
7
One−shot
+ Current
Sensor
5
k
2p
4
Over Voltage
Comparator
3
+
1.067
Vref
Multiplier
1.5 V
Vref
+
Err Amp
Quickstart
1
62
Figure 1. Simplified Block Diagram
ORDERING INFORMATION
Device
Operating Junction
Temperature Range
Package
Shipping
MC33232P
PDIP−8
50 Units / Rail
MC33232PG
PDIP−8
(Pb−Free)
50 Units / Rail
MC33232D
MC33232DG
−40°C to +150°C
SOIC−8
SOIC−8
(Pb−Free)
98 Units / Rail
98 Units / Rail
MC33232DR2
SOIC−8
2500 Tape & Reel
MC33232DR2G
SOIC−8
(Pb−Free)
2500 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
http://onsemi.com
2


Part Number MC33232
Description Power Factor Controller
Maker ON Semiconductor
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