LX1563IM-TR(2005) データシートの表示（PDF） - Microsemi Corporation
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LX1563IM-TR Datasheet PDF : 25 Pages
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THE INFINITE POWER OF INNOVATION
LX1562/1563
SECOND-GENERATION POWER FACTOR CONTROLLER
PRODUCTION DATA SHEET
DESCRIPTION
The LX1562 is a second-generation Special circuitry has also been added to
family of power factor correction prevent no load runaway conditions. And
controllers using a discontinuous mode of finally, output drive clamps limiting power
operation. They are optimized for MOSEFT gate drive independent of supply
electronic ballast applications. Many voltage greatly enhance the products
improvements have been made over the practical application.
original SG3561A controller introduced by Although the IC design has been
Silicon General Semiconductor in 1992.
optimized for electronic ballast
New features include the addition of an applications, it can also be used for power
internal start-up circuit eliminating bulky factor correction in lower power (typical <
external components while allowing 300W) AC-DC converters. One unique
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
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 operation. This feature prevents
improves turn on overshoot characteristics large current gaps from appearing thereby
and current limiting.
minimizing distortion and enhancing
power factor correction.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
Internal Start-Up Circuit
Internal Current Sense Blanking
Improved MicroPower Start-Up
Current (300µA maximum)
Clamped E.A. Output For Lower
Turn-On Overshoot
Multiplier Clamp Limits Maximum
Input Current
Internal Over Voltage Protection
Replaces Built-In C.S. Offset
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
AC+
120V
AC
AC-
Typical Application Of The LX1562 In An 80W Fluorescent
Lamp Ballast With Active Power Factor Control
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
I DET
1MΩ
1%
R7
47Ω
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 1.3Ω
KEY FEATURES
Electronic Ballast
Switching Power Supplies
Available Options Per Part #
Part #
Start-Up Hysteresis
Voltage 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.
TA (°C)
0 to 100
PACKAGE ORDER INFO
Plastic DIP
M 8-Pin
Plastic SOIC
DM 8-Pin
RoHS Compliant / Pb-free
Transition D/C: 0503
RoHS Compliant / Pb-free
Transition D/C: 0440
LX1562IM
LX1562IDM
LX1563IM
LX1563IDM
Note: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX5241CDB-
TR).
Copyright © 1996
Rev. 1.3a,2005-03-09
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
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