Semiconductor Components Industries, LLC, 2010
November, 2010 -- Rev. 11
1 Publication Order Number:
MC33260/D
MC33260
GreenLinet Compact
Power Factor Controller:
Innovative Circuit for
Cost Effective Solutions
The MC33260 is a controller for Power F actor Correction
preconverters meeting international standard requirements in
electronic ballast and off--line power conversion applications.
Designed to drive a free frequency discontinuous mode, it can also be
synchronized and in any case, it features very effective protections that
ensure a safe and reliable operation.
This circuit is also optimized to offer extremely compact and cost
effective PFC solutions. While it requires a minimum number of
external components, the MC33260 can control the follower boost
operation that is an innovative mode allowing a drastic size reduction
of both the inductor and the power switch. Ultimately, the solution
system cost is significantly lowered.
Also able to function in a traditional way (constant output voltage
regulation level), any intermediary solutions can be easily
implemented. This flexibility makes it ideal to optimally cope with a
wide range of applications.
General Features
Standard Constant Output Voltage or “Follower Boost” Mode
Switch Mode Operation: Voltage Mode
Latching PWM for Cycle--by--Cycle On--Time Control
Constant On--Time Operation That Saves the Use of an Extra Multiplier
Totem Pole Output Gate Drive
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
Improved Regulation Block Dynamic Behavior
Synchronization Capability
Internally Trimmed Reference Current Source
These are Pb--Free Devices
Safety Features
Overvoltage Protection: Output Overvoltage Detection
Undervoltage Protection: Protection Against Open Loop
Effective Zero Current Detection
Accurate and Adjustable Maximum On--Time Limitation
Overcurrent Protection
ESD Protection on Each Pin
Figure 1. Typical Application
8
Filtering
Capacitor
L1
CT
M1
D1
D1...D4
V
CC
C1
+
Sync
V
control
R
OCP
R
cs
R
o
7
6
5
1
2
3
4
LOAD
(SMPS, Lamp
Ballast,...)
MC33260
DIP--8 CONFIGURATION SHOWN
http://onsemi.com
MC33260P
PIN CONNECTIONS
18
7
6
5
2
3
4
Feedback Input
V
control
Oscillator
Capacitor (C
T
)
V
CC
Current Sense
Input
Synchronization
Input
Gnd
Gate Drive
PDIP--8
P SUFFIX
CASE 626
1
8
SO--8
D SUFFIX
CASE 751
1
8
MARKING
DIAGRAMS
33260
ALYW
G
1
8
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
GorG = Pb --Free Package
18
7
6
5
2
3
4
Feedback Input
V
control
Oscillator
Capacitor (C
T
)
V
CC
Current Sense
Input
Synchronization
Input
Gnd Gate Drive
MC33260D
See detailed orderingandshipping informationinthepackage
dimensions section on page 20 of this data sheet.
ORDERING INFORMATION
MC33260P
AWL
YYWWG
