MC33260
GreenLinet Compact
Power Factor Controller:
Innovative Circuit for
Cost Effective Solutions
The MC33260 is a controller for Power Factor 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.
http://onsemi.com
MARKING
DIAGRAMS
8
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.
MC33260P
AWL
YYWWG
PDIP−8
P SUFFIX
CASE 626
8
1
1
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.
8
SO−8
D SUFFIX
CASE 751
33260
ALYW
G
8
General Features
1
1
• 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
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
WW, W = Work Week
G or G
= Pb−Free Package
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
PIN CONNECTIONS
• Improved Regulation Block Dynamic Behavior
• Synchronization Capability
Feedback Input
1
2
3
4
8
7
6
5
V
CC
• Internally Trimmed Reference Current Source
• Pb−Free Packages are Available
V
Gate Drive
Gnd
control
Oscillator
Safety Features
Capacitor (C )
Current Sense
Input
T
• Overvoltage Protection: Output Overvoltage Detection
• Undervoltage Protection: Protection Against Open Loop
• Effective Zero Current Detection
Synchronization
Input
MC33260P
• Accurate and Adjustable Maximum On−Time Limitation
• Overcurrent Protection
Oscillator
1
8
V
control
Capacitor (C )
Current Sense
Input
T
Feedback Input
• ESD Protection on Each Pin
2
3
4
7
6
5
Synchronization
V
CC
Input
Filtering
Capacitor
D1...D4
Gnd
Gate Drive
L1
D1
MC33260D
C1
+
V
LOAD
(SMPS, Lamp
Ballast,...)
CC
1
2
3
4
8
7
6
5
M1
V
control
R
o
ORDERING INFORMATION
See detailed ordering and shipping information in the package
Sync
CT
R
OCP
R
cs
dimensions section on page 20 of this data sheet.
DIP−8 CONFIGURATION SHOWN
Figure 1. Typical Application
©
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
September, 2005 − Rev. 9
MC33260/D