N
OT RECOMMENDED FOR NEW DESIGN
SG3561A
CONTROLLER
P
OWER
FACTOR
D
A T A S H E E T
T
H E
I
N F I N I T E
P
O W E R O F
I N N O V A T I O N
KEY FEATURES
DESCRIPTION
This monolithic integrated circuit provides all the pole output stage for directing driving of the
necessary functions for designing an active power power MOSFET. In addition to the above, an
MICRO-POWER START-UP
MODE (250µA typ.)
LOW OPERATING CURRENT
CONSUMPTION
factor correction circuit in conjunction with off-
line power converters. Although the IC is
internal logic circuit detects the zero crossing of
the inductor current and maintains discontinuous
INTERNAL 1.5% REFERENCE
TOTEM POLE OUTPUT STAGE
AUTOMATIC CURRENT
LIMITING OF BOOST STAGE
DISCONTINUOUS MODE OF
OPERATION WITH NO
CURRENT GAPS
NO SLOPE COMPENSATION
REQUIRED
AVAILABLE IN 8 & 14-PIN
PLASTIC DIP AND 8-PIN SOIC
PACKAGE
optimized for electronic ballast applications, it can current mode of operation such that it allows no
also be used in switched mode AC-DC power current gaps to appear. This type of operation
converters. Included in the 8-pin DIP package are; provides a higher P.F. correction, as well as
an under voltage lockout with a micropower start- lower harmonic distortion over the fixed
up with a 2V hysteresis, an internal temperature
compensated bandgap reference, a unity gain
stable error amplifier, one quadrant multiplier
stage, a current sense comparator and a totem
frequency discontinuous current mode. The
SG3561A is characterized for operation over the
ambient temperature range of -25°C to +85°C.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
SEE LX1562/1563 FOR NEW
DESIGNS
PRODUCT HIGHLIGHT
TYPICAL
A
PPLICATION OF THE SG3561A
IN AN 80W
FLUORESCENT
L
AMP
B
ALLAST WITH
A
CTIVE
P
OWER
F
ACTOR
C
ONTROL
D7
HT32
R11
560K
Core: PQ2625
L1 Ind: 450µH
R12
300Ω
Gap:
48mil
C7
0.1µF
R5
51K
#22 - AWG 62T
225V
D6
MR856
R4
22K
5T
110K
R3
1/2W
D1
D2
D5
1N4935
1N4004 1N4004
85
R9
1MΩ
C3
68µF
25V
R1
2.2M
V
IDET
OUT
IN
R6
47Ω
AC+
C8
Q1
IRF730
C6
100µF
400V
7
C1
1µF
120V
0.1µF
C4
0.22µF
2
1
MULT
IN
COMP
INV
3
AC-
R2
12K
R7
330Ω
R10
11K
D3
D4
4
C2
0.01µF
C.S.
1N4004 1N4004
GND
6
R13
2KΩ
C5
R8
1000pF 0.22Ω
PACKAGE ORDER INFO
Plastic DIP
8-Pin
Plastic DIP
14-Pin
Plastic SOIC
8-Pin
RoHS Compliant / Pb-free
Transition DC: 0440
M
N
DM
TA (°C)
RoHS Compliant / Pb-free Transition DC: 0503
-25 to 85
SG3561AM
SG3561AN
SG3561ADM
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. SG3561AM-TR)
L
I N
F
I N I T Y
M
I C R O E L E C T R O N I C S
I N C .
Copyright © 1994
Rev. 1.2a,2005-03-09
1
11861 WESTERN
A
VENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570