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부품번호 LX1562IM 기능
기능 SECOND-GENERATION POWER FACTOR CONTROLLER
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LX1562IM 데이터시트, 핀배열, 회로
T H E I N F I N I T E P O W E R O F I N N O VAT I O N
L I N DO C # : 1562
LX1562/1563
SECOND-GENERATION POWER FACTOR CONTROLLER
PRODUCTION DATA SHEET
DESCRIPTION
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
introduced by Silicon General Semicon-
ductor in 1992.
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
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.
PRODUCT HIGHLIGHT
TYPICAL APPLICATION OF THE LX1562 IN AN 80W
FLUORESCENT LAMP BALLAST WITH ACTIVE POWER FACTOR CONTROL
AC+
120V
AC
AC-
450µH
61T #22AWG
MR854
VBOOST
230V
D1 D3
100k L1
½W
R3
7T
R4
22k
D7
D5 1N4935
R1
2.2M
1%
C1 1µF
250V
C2
22µF
R10
4.7M
D6
8 5 1N4148
VIN IDET
1M
1%
R7
47
OUT 7 R5
R9 620k
Q1
1RF730
C6
100µF
MULT
3 IN
COMP 2
C5
400V
D2
D4
R2
29k
1%
C4
C3
.01µF
GND
INV 1
C.S. 4
0.1µF
11k
1%
R8
3x R6
6 1/4W 1.3
KEY FEATURES
s INTERNAL START-UP CIRCUIT
s INTERNAL CURRENT SENSE BLANKING
s IMPROVED MICROPOWER START-UP
CURRENT (300µA max.)
s CLAMPED E.A. OUTPUT FOR LOWER
TURN-ON OVERSHOOT
s MULTIPLIER CLAMP LIMITS MAXIMUM
INPUT CURRENT
s INTERNAL OVERVOLTAGE PROTECTION
REPLACES BUILT-IN C.S. OFFSET
s PWM OUTPUT CLAMP LIMITS MOSFET
GATE DRIVE VOLTAGE
s INCREASED UVLO HYSTERESIS REDUCES
START-UP TIMING (LX1562 only)
s LOW OPERATING CURRENT CONSUMPTION
s INTERNAL 1.5% REFERENCE
s TOTEM POLE OUTPUT STAGE
s AUTOMATIC CURRENT LIMITING OF BOOST
STAGE
s DISCONTINUOUS MODE OF OPERATION
WITH NO CURRENT GAPS
s NO SLOPE COMPENSATION REQUIRED
A P P L I C AT I O N S
s ELECTRONIC BALLAST
s SWITCHING POWER SUPPLIES
A VA I L A B L E O P T I O N S P E R PA R T #
Part #
Start-Up
Voltage
Hysteresis
Voltage
LX1562
13.1V
5.2V
LX1563
9.8V
2.1V
Note: Thick trace on schematic shows high-frequency, high-current path in circuit.
Lead lengths must be minimized to avoid high-frequency noise problems.
Copyright © 1996
Rev. 1.3 12/96
PACKAGE ORDER INFORMATION
TA (°C)
M
Plastic DIP
8-pin
DM
Plastic
8-pin
SOIC
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)
FOR FURTHER INFORMATION CALL (714) 898-8121
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841
1




LX1562IM pdf, 반도체, 판매, 대치품
LX1562/1563
PRODUCT DATABOOK 1996/1997
SECOND-GENERATION POWER FACTOR CONTROLLER
PRODUCTION DATA SHEET
E L E C T R I C A L C H A R A C T E R I S T I C S (Con't.)
Parameter
Symbol
Current Sense Comparator Section
Test Conditions
LX1562I/1563I
Units
Min. Typ. Max.
Input Bias Current
Current Sense Delay to Output
C.S. Blanking Time
C.S. Input Offset Voltage
Detect Section
ICSB 0V VCS 1.7V
td E.A.OUT = 3.7V, VCS = 0 to 1.2V, VM1 = 1V
tBLK
VOFF VEA0 = 2.2V, VM1 = 0V, IDETC = 0V
-1 -0.3 1
µA
280 500
ns
0.4 0.9 1.2
µs
-20 3 20 mV
Input Voltage Threshold - High
Hysteresis
Input LO Clamp Voltage
Input HI Clamp Voltage
Input Current
Input HI/LO Clamp Diode Current
Restart Timer Section
VHI
HD
VDL IDET = 100µA
VDZ IDET = 3mA
IDB 1V VDET 6V
IDMX VDET < 0.9V, VDET > 6V
1.6 1.72 1.9
180 240 300
0.4 0.62 0.85
7.0 7.8 8.6
-1 -0.2 1
±3
V
mV
V
V
µA
mA
Restart Time
Output Driver Section
tRST
300 µsec
Output High Voltage
Output Low Voltage
Output Rise Time
Output Fall Time
Maximum Output Voltage
VPRH
V PRL
tR
tf
VDRMX
IL = -10mA, VIN = 12V
IL = 10mA, VIN = 12V
CL = 1000pF
CL = 1000pF
VIN = 20V
8.5 9
0.8 1
130 200
50 120
13 13.8 15
V
V
ns
ns
V
Notes: 5. Because the reference is not brought out externally, these specifications are tested at probe only, and cannot be tested on the packaged part.
They are guaranteed by design, and shown for illustrative purposes only.
6. K =
VC.S.
VC.S.
(VM1) x (VEA0 - VREF)
(VM1) (VEA0)
7. This parameter, although guaranteed, is not tested in production.
8. Initial accuracy includes input offset voltage of error amplifier.
4 Copyright © 1996
Rev. 1.3 12/96

4페이지










LX1562IM 전자부품, 판매, 대치품
PRODUCT DATABOOK 1996/1997
SECOND-GENERATION POWER FACTOR CONTROLLER
PRODUCTION DATA SHEET
LX1562/1563
CHARACTERISTIC CURVES
FIGURE 1. E.A. OUTPUT VOLTAGE vs. C.S. THRESHOLD
1.4
VM1 = 3V
1.2
VM1 = 2.5V
1.0
0.8
0.6
VM1 = 1V
0.4 VM1 = 1.5V
0.2 VM1 = 2V
TA = 25°C
0
2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4
E.A. Output Voltage - (V)
FIGURE 2. MULTIPLIER INPUT VOLTAGE vs. C.S. THRESHOLD
1.4
VEA0 = 4V
1.2
VEA0 = 3.5V
1.0
TA = 25°C
0.8
VEA0 = 3V
0.6
VEA0 = 3.25V
0.4
VEA0 = 2.5V
0.2
0
0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6
Multiplier Input Voltage - (V)
FIGURE 3. MULTIPLIER GAIN (V =1V, V =3.5V)
M1 EA0
vs. TEMPERATURE
0.80
0.75
0.70
VCC = 12V
CL = 1nF
VEA0 = 3.5V
VM1 = 1V
0.65
0.60
0.55
0.50
-50
-25 0 25 50 75 100 125
(TA) Ambient Temperature - (°C)
FIGURE 4. REFERENCE VOLTAGE (Including Offset)
vs. TEMPERATURE
2.52
2.51
VCC = 12V
CL = 1nF
2.50
2.49
2.48
2.47
2.46
2.45
-50
-25 0 25 50 75 100 125
(TA) Ambient Temperature - (°C)
Copyright © 1996
Rev. 1.3 12/96
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
LX1562IDM

SECOND-GENERATION POWER FACTOR CONTROLLER

Microsemi Corporation
Microsemi Corporation
LX1562IM

SECOND-GENERATION POWER FACTOR CONTROLLER

Microsemi Corporation
Microsemi Corporation

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