MC33232 Datasheet, PDF (1/16 Pages) ON Semiconductor – Power Factor Controller

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
PIN ASSIGNMENT
Voltage Feedback
Input ¹
Compensation ²
Multiplier Input 3
Current Sense
Input
4
8 V_CC
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.
© Semiconductor Components Industries, LLC, 2005
1
March, 2005 − Rev. 1
Publication Order Number:
MC33232/D