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LX1563IDM-TR

更新时间： 2024-11-23 13:09:55
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美高森美 - MICROSEMI 控制器
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25页 443K
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LX1563IDM-TR 数据手册

 浏览型号LX1563IDM-TR的Datasheet PDF文件第2页浏览型号LX1563IDM-TR的Datasheet PDF文件第3页浏览型号LX1563IDM-TR的Datasheet PDF文件第4页浏览型号LX1563IDM-TR的Datasheet PDF文件第5页浏览型号LX1563IDM-TR的Datasheet PDF文件第6页浏览型号LX1563IDM-TR的Datasheet PDF文件第7页 
LIN DOC #: 1562  
LX1562/1563  
SECOND-GENERATION POWER FACTOR CONTROLLER  
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  
P R O D U C T I O N D A T A S H E E T  
DESCRIPTION  
KEY FEATURES  
■ INTERNAL START-UP CIRCUIT  
The LX1562 is a second-generation  
family of power factor correction  
controllers using a discontinuous mode  
of operation. They are optimized for  
electronic ballast applications. Many  
improvements have been made over  
the original SG3561A controller  
added to prevent no load runaway  
conditions. And finally, output drive  
clamps limiting power MOSFET gate  
drive independent of supply voltage  
greatly enhance the products practical  
application.  
Although the IC design has been  
optimized for electronic ballast applica-  
tions, it can also be used for power  
factor correction in lower power (typ <  
300W) AC-DC converters. One unique  
feature of the device is encompassed  
by the addition of internal logic  
circuitry to detect zero crossing of the  
inductor current thus maintaining the  
discontinuous current mode of opera-  
tion. This feature prevents large  
current gaps from appearing thereby  
minimizing distortion and enhancing  
power factor correction.  
■ INTERNAL CURRENT SENSE BLANKING  
■ IMPROVED MICROPOWER START-UP  
CURRENT (300µA max.)  
■ CLAMPED E.A. OUTPUT FOR LOWER  
TURN-ON OVERSHOOT  
■ MULTIPLIER CLAMP LIMITS MAXIMUM  
INPUT CURRENT  
introduced by Silicon General Semicon-  
ductor in 1992.  
■ INTERNAL OVERVOLTAGE PROTECTION  
REPLACES BUILT-IN C.S. OFFSET  
New features include the addition of  
an internal start-up circuit eliminating  
bulky external components while  
allowing independent boost converter  
operation. Addition of internal current  
sense blanking eliminating the need for  
an external R/C filter network. Internal  
clamping of the error amplifier and  
multiplier outputs improves turn on  
overshoot characteristics and current  
limiting. Special circuitry has also been  
■ PWM OUTPUT CLAMP LIMITS MOSFET  
GATE DRIVE VOLTAGE  
■ INCREASED UVLO HYSTERESIS REDUCES  
START-UP TIMING (LX1562 only)  
■ LOW OPERATING CURRENT CONSUMPTION  
■ 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  
PRODUCT HIGHLIGHT  
TYPICAL APPLICATION OF THE LX1562 IN AN 80W  
FLUORESCENT LAMP BALLAST WITH ACTIVE POWER FACTOR CONTROL  
450µH  
APPLICATIONS  
VBOOST  
■ ELECTRONIC BALLAST  
61T #22AWG  
MR854  
230V  
■ SWITCHING POWER SUPPLIES  
L1  
R3  
100k  
½W  
R4  
22k  
D7  
D1  
D3  
7T  
D5  
1N4935  
AVA I L A B L E OP T I O N S P E R PA R T #  
1MΩ  
1%  
D6  
R7  
C2  
22µF  
5
8
1N4148  
Part #  
Start-Up  
Voltage  
Hysteresis  
Voltage  
AC+  
V
I
2.2M  
1%  
IN  
DET  
R1  
R10  
4.7M  
47Ω  
Q1  
1RF730  
120V  
AC  
OUT  
7
R5  
R9 620k  
C1 1µF  
LX1562  
LX1563  
13.1V  
9.8V  
5.2V  
2.1V  
C6  
100µF  
400V  
250V  
AC-  
MULT  
IN  
C5  
2
3
COMP  
D2  
D4  
0.1µF  
11k  
1%  
29k  
1%  
1
4
C3  
R2  
INV  
C.S.  
R8  
C4  
.01µF  
GND  
6
3x  
1/4W  
R6  
1.3Ω  
Note: Thick trace on schematic shows high-frequency, high-current path in circuit.  
Lead lengths must be minimized to avoid high-frequency noise problems.  
PACKAGE ORDER INFORMATION  
Plastic DIP  
8-pin  
Plastic SOIC  
DM  
8-pin  
TA (°C)  
M
0 to 100  
0 to 100  
LX1562IM  
LX1563IM  
LX1562IDM  
LX1563IDM  
Note: All surface-mount packages are available in Tape & Reel.  
Append the letter "T" to part number. (i.e. LX1562IDMT)  
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1  
Copyright © 1996  
Rev. 1.3 12/96  
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841  
1234567...25

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