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PDF LXMG1645-12-51 Data sheet ( Hoja de datos )

Número de pieza LXMG1645-12-51
Descripción CCFL Programmable Inverter Module
Fabricantes Microsemi Corporation　
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RangeMax™ StayLIT™ LXMG1645-12-5x
TM ® 12V Quad 5W CCFL Inverter Module
PRODUCTION DATA SHEET
DESCRIPTION
The LXMG1645-12-51 and LXMG1645- This allows the inverter to be properly
12-52 are Quad 5W Output CCFL (Cold matched to a wide array of LCD panel
wCwawt.hDoatdaeSheet4FUl.uneotrescent Lamp) Inverter lamp current specifications, a function
Modules specifically designed for driving which we call PanelMatch™.
15” to 18”quad lamp LCD panels.
In addition the inverter has a
The inverters include two dimming dedicated V_STATUS pin that indicates a
inputs that provide brightness control, fault has occurred such as an open or
V_BRITE and P_BRITE. A voltage on shorted lamp. V_STATUS is an open
V_BRITE pin adjusts the lamp current drain configuration whose output is low
amplitude with 0V providing maximum during normal operation. When one or
brightness. The P_BRITE input accepts a more lamps sustain a fault the other
low frequency PWM signal which directly lamp(s) will continue to operate and the
controls the lamp drive waveform. This V_STATUS pin will toggle high. This
PWM RangeMAX™ Digital Dimming mode of operation during lamp(s) failure
Technique provides flicker-free brightness is called StayLIT™ since the panel is able
control over a wide range (typically 50:1+). to still remain on although at reduced
The maximum output current is brightness.
externally programmable using the SET1 and Other benefits of this new topology
SET2 pins on the input connector over a are stable fixed-frequency operation and
range of 6mA to 7.5mA in 0.5mA steps.
secondary-side strike-voltage regulation.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198,234; Patents Pending
PRODUCT HIGHLIGHT
KEY FEATURES
ƒ StayLIT™ Redundancy
ƒ PanelMatch™ Adjustable
Output Current
ƒ V_STATUS Fault Output
ƒ Dual Brightness Control Inputs
ƒ RangeMAX™ Wide Range
Dimming
ƒ Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation
ƒ Fixed Frequency Operation
ƒ Rated From -30 to 80°C
ƒ UL 60950 Pending
ƒ RoHS Compliant
APPLICATIONS
ƒ High Brightness Displays
ƒ Desktop Displays
ƒ Medical Monitors
BENEFITS
ƒ Smooth, Flicker Free 10-
100% Full-Range Brightness
Control
ƒ
LXMG1645-12-51
TWO DIMMING INPUTS - PWM" AND VDC, OR POTENTIOMETER
Lamp Fault Signal
HI
W HI
HI
HI
W
Lamp Current Programmable from 6mA to 7.5mA per Lamp in 0.5mA Steps
PART NUMBER
LXMG1645-12-51
LXMG1645-12-52
PACKAGE ORDER INFO
OUTPUT CONNECTORS
Four JST SM02(8.0) B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00
or equivalent connectors
Four JST SM02B-BHSS-1-TB(LF)(SN) or Yeon Ho 35001WR-02A00 or
equivalent connectors
INVERTER MATES DIRECTLY
TO PANEL CONNECTORS
JST BHR-03VS-1 or
equivalent connectors
JST BHSR-02VS-1 or
equivalent connectors
Copyright © 2010
Rev. 1.0, 2010-12-23
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1

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LXMG1645-12-51 pdf
RangeMax™ StayLIT™ LXMG1645-12-5x
TM ® 12V Quad 5W CCFL Inverter Module
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 0°C
to 60°C except where otherwise noted; VIN = 12V, ENABLE > 2.1V, V _BRITE = 0V or 0Ω, P_BRITE = 100% or Open
Parameter
Symbol
Test Conditions / Comment
Min Typ Max Units
FIL1~4c’ SET1 = Ground, SET2 = Open, One Lamp Short
FIL1~4d’
SET1 = Ground, SET2 = Ground, One Lamp
Short
IL1~4e
SET1 = Open, SET2 = Open, V_BRITE = 2.5V,
One Lamp Open
Min Lamp Current Of No-Fault
Side (Open)
IL1~4f
IL1~4g
SET1 = Open, SET2 = Ground, V_BRITE = 2.5V,
One Lamp Open
SET1 = Ground, SET2 = Open, V_BRITE = 2.5V,
One Lamp Open
IL1~4h
SET1 = Ground, SET2 = Ground, V_BRITE =
2.5V, One Lamp Open
IL1~4e’
SET1 = Open, SET2 = Open, V_BRITE = 2.5V,
One Lamp Short
Min Lamp Current Of No-Fault
Side (Short)
IL1~4f’
IL1~4g’
SET1 = Open, SET2 = Ground, V_BRITE = 2.5V,
One Lamp Short
SET1 = Ground, SET2 = Open, V_BRITE = 2.5V,
One Lamp Short
IL1~4h’
SET1 = Ground, SET2 = Ground, V_BRITE =
2.5V, One Lamp Short
¹ ENABLE should be pull up from VIN using 68kΩ, with open collector or open drain
6.3
5.8
6.8
6.3
2.20
2.05
1.90
1.70
2.25
2.10
1.95
1.87
7.3
6.8
mARMS
mARMS
mARMS
FUNCTIONAL PIN DESCRIPTION
CONN
PIN
DESCRIPTION
CN1 (Molex 053261-1071 or equivalent )
CN1-1, CN1-2
CN1-3, CN1-4
VIN
GND
Main Input Power Supply 10.8V to13.2V
Power Supply Return
CN1-5
CN1-6
CN1-7
CN1-8
CN1-9
CN1-10
ENABLE
V_BRITE
ON/OFF Control. ON: Pull-Up 68kΩ from VIN and OC or OD or ≥ 2.1V, OFF: 0 ~ 0.8V
Analog Brightness Control (0V to 2.5V), 0V = Full brightness, 2.5V = Min brightness
Resistor 0 ~ 50kΩ (Max ~ Min brightness), No Connection to P_BRITE to Use V_BRITE Option
P_BRITE Low Frequency Burst PWM Dimming Input, Connection to P_BRITE Overrides V_BRITE Option
V_STATUS
Fault Status Output: Normal State: Low, Fail State : High Open Drain (Internally Pulled up with 47kΩ to
5V)
SET1 SET1 MSB Connecting This Pin to Ground Decreases the Output Current
SET2 SET2 LSB Connecting This Pin to Ground Decreases the Output Current
CN2, CN3, CN4, CN5
LXMG1645-12-51 (JST SM02(8.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00 or equivalent)
LXMG1645-12-52 (JST SM02B-BHSS-1-TB(LF)(SN) or Yeon Ho 35001WR-02A00 or equivalent)
CN2-1 to CN5-1
CN2-2 to CN5-2
LAMPHI
LAMPLO
High Voltage Connection to High Side of Lamp. Connect to Lamp Terminal with Shortest Lead Length.
DO NOT Connect to Ground.
Low Voltage Connection to Return Side of Lamp. Connect Lamp Terminal with Longer Lead Length.
DO NOT Connect to Ground.
Copyright © 2010
Rev. 1.0, 2010-12-23
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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