LXM1643-12-63 Datasheet PDF - Microsemi Corporation

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LXM1643-12-63
Microsemi Corporation

Part Number LXM1643-12-63
Description 12V Quad 6W CCFL Programmable Inverter Module
Page 6 Pages


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PanelMatch™
LXM1643-12-63
TM ® 12V Quad 6W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
DESCRIPTION
The LXM1643-12-63 is a Quad 6W The resultant “burst drive” that
Output Direct Drive™ CCFL (Cold energizes the lamp was designed
Cathode Fluorescent Lamp) Inverter specifically to ensure that no premature
Module specifically designed for driving lamp degradation occurs, while allowing
LCD backlight lamps. It is ideal for significant power savings at lower dim
driving the 15” Optrex T-51511D150-FW- levels.
A-AC/AD, T51863D150J-FW-A-AB/AD, The modules convert the DC voltage
or similar TFT LCD panels.
from the system battery or AC adapter
LXM1643 modules provide the directly to high frequency, high-voltage
designer with a vastly superior display waves required to ignite and operate
brightness range than typical with analog CCFL lamps.
(current amplitude control) dimming.
The LXM1643-12-63 inverter is
The inverter includes a dimming input intended for panel assemblies with two
that permits brightness control from either high and two low lamp connections, each
a DC voltage source or a PWM signal or sharing the same connector. Two other
external potentiometer. The maximum versions, the LXM1643-12-61 and the
output current is externally programmable LXM1643-12-62, are available to match
over a range of 5 to 8mA in 1mA steps to other quad lamp panels with alternative
allow the inverter to match properly to a output connector configurations.
wide array of LCD panel lamp current Other benefits of this new topology
specifications.
are stable fixed-frequency operation,
The RangeMAX™ Digital Dimming secondary-side strike-voltage regulation,
Technique provides flicker-free brightness and both open/shorted lamp protection
control in any wide range (typically 50:1+) with fault timeout.
dimming application.
KEY FEATURES
ƒ Externally Programmable
Maximum Output Current
ƒ Easy to Use Brightness
Control
ƒ RangeMAX Wide Range
Dimming
ƒ Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation and Timeout
ƒ Fixed Frequency Operation
ƒ Rated From -20 to 70°C
ƒ
APPLICATIONS
ƒ High Brightness Displays
ƒ Desktop Displays
ƒ Industrial Display Controls
BENEFITS
ƒ Smooth, Flicker Free 2%-
100% Full-Range Brightness
Control
ƒ Programmable Output
Current Allows Inverter to
Mate With a Wide Variety of
LCD Panel Specifications
ƒ
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; 6,298,234; Patents Pending
PRODUCT HIGHLIGHT
DC Voltage
Source
Potentiometer
PWM
Signal
Universal Dimming Input
PWM, VDC, or
Potentiometer
Microsemi
PART NUMBER
LXM1643-12-63
PACKAGE ORDER INFO
OUTPUT CONNECTORS
Two JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00
and Two JST SM02(4.0)B-BHS-1-TB or equivalent connectors
INVERTER MATES DIRECTLY TO
PANEL CONNECTORS
JST BHSR-02VS-1 and
JST BHR-02VS-1
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1



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PanelMatch™
LXM1643-12-63
TM ® 12V Quad 6W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS (NOTE 1)
Input Signal Voltage (VIN1).....................................................................................................................................-0.3V to 15V
Input Power ....................................................................................................................................................................... 30W
Output Voltage, no load ............................................................................................................ Internally Limited to 2000VRMS
Output Current (each output) ......................................................................................................9.5mARMS (Internally Limited)
Output Power (each output) ............................................................................................................................................. 6.0W
Input Signal Voltage ( SLEEP Input) ..................................................................................................................... -0.3V to VIN1
Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V
Ambient Operating Temperature, zero airflow.....................................................................................................-20°C to 70°C
Storage Temperature Range...............................................................................................................................-40°C to 85°C
Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified
terminal.
RECOMMENDED OPERATING CONDITIONS (R.C.)
This module has been designed to operate over a wide range of input and output conditions. However, best efficiency and performance
will be obtained if the module is operated under the condition listed in the ‘R.C.’ column. Min. and Max. columns indicate values beyond
which the inverter, although operational, will not function optimally.
Parameter
Symbol
Recommended Operating Conditions
Min R.C. Max
Input Supply Voltage Range (Fully Regulated
Lamp Current)
VIN1
10.8
12
13.2
Input Supply Voltage Range (Functional)
10.2 12 13.8
Output Power (each output)
PO 5.0 6.0*
Linear BRITE Control Input Voltage Range
VBRT_ADJ
0.5
2.0
Lamp Operating Voltage
VLAMP
530
625
730
Lamp Current (Full Brightness)
IOLAMP
5
8
Operating Ambient Temperature Range
TA -20
70
*Total output power must not exceed 6W . Higher voltage lamps may require maximum output current to be set lower than 8mARMS
Units
V
W
V
VRMS
mARMS
°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
Parameter
Symbol
Test Conditions
` OUTPUT PIN CHARACTERISTICS
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Output Current Lamp to Lamp
Deviation
Min. Average Lamp Current
(each output)
Lamp Start Voltage
Operating Frequency
Burst Frequency
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
ILL%DEV
IL(MIN)
VLS
fO
fBURST
VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = Ground, ISET2 = Ground
VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = Ground, ISET2 = Open
VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = Open, ISET2 = Ground
VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = Open, ISET2 = Open
VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = Open, ISET2 = Open
VBRT_ADJ 0.5VDC, SLEEP > 2.0V, VIN1 = 12VDC
ISET1 = ISET2 = Ground
-20°C < TA < 70°C, VIN1 > 10.8VDC
VBRT_ADJ = 2.5VDC, SLEEP > 2.0V, VIN1 = 12V
Output Burst Frequency
LXM1643-12-63
Units
Min Typ Max
4.0 5
5.0 6
6.0 7
7.0 8
3
1500
69
269
.30
1650
72
281
5.5 mARMS
6.6 mARMS
7.7 mARMS
8.8 mARMS
10 %
mARMS
VRMS
75 kHz
293 Hz
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2



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PanelMatch™
LXM1643-12-63
TM ® 12V Quad 6W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
Parameter
Symbol
Test Conditions
` BRITE INPUT
Input Current
Minimum Input for Max. Lamp Current
Maximum Input for Min. Lamp Current
` SLEEP INPUT
RUN Mode
SLEEP Mode
` SET1,2 INPUT
SET1,2 Low Threshold
Input Current
` POWER CHARACTERISTICS
Sleep Current
Run Current
Efficiency
IBRT
VBRT_ADJ
VBRT_ADJ
VSLEEP
VSLEEP
VL
ISET
IIN(MIN)
IRUN
η
VBRT_ADJ = 0VDC
VBRT_ADJ = 3VDC
IO(LAMP) = Maximum Lamp Current
IO(LAMP) = Minimum Lamp Current
VSET 0.4V
VIN1 = 12VDC, SLEEP < 0.8V
VIN1 = 12VDC, SLEEP 2.0V, ISET1 = Open
ISET2 = Ground, VLAMP = 550VRMS
VIN1 = 12VDC, SLEEP 2.0V, ISET1 = Open
ISET2 = Ground, VLAMP = 550VRMS
LXM1643-12-63
Units
Min Typ Max
-300
50
2.0
2.05
µADC
µADC
VDC
0.4 0.5
VDC
2.0
-0.3
VIN1
0.8
VDC
VDC
-300
0.4
V
µA
0.0 10 30 µADC
1450
mADC
88 %
FUNCTIONAL PIN DESCRIPTION
CONN
PIN
DESCRIPTION
CN1 (Molex 53261-1290) Mates with 51021-1200 housing, 50079-8100 pins. Mates with LX9508 input cable assembly
CN1-1,2,3 VIN1 Main Input Power Supply (10.8V < VIN1 < 13.2V)
CN1-4,5,6
GND
Power Supply Return
CN1-7
CN1-8
AGND
NC
Analog Signal Ground
No Connect
CN1-9
SLEEP ON/OFF Control. (0V < SLEEP < 0.8 = OFF, SLEEP >= 2.0V = ON
CN1-10
BRITE Brightness Control (0.5V to 2.0VDC). 2.0VDC gives maximum lamp current.
CN1-11
SET1
SET1 MSB Connecting this pin to ground decreases the output current (see Table 1)
CN1-12
SET2
SET2 LSB Connecting this pin to ground decreases the output current (see Table 1)
CN2, CN5 (JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00)
CN2, CN5-
1,2
VHI
High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
CN3, CN4 (SM02(4.0)B-BHS-1-TB or equivalent connectors)
CN3, CN4-
1,2
VLO
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3



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PanelMatch™
LXM1643-12-63
TM ® 12V Quad 6W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
(Pin 11)
Open*
SET2
(Pin 12)
Open*
Open*
Ground
Ground
Open*
Ground
Ground
* If driven by a logic signal it should be open collector or open drain only, not a voltage source.
Nominal Output Current
8.0mA
7.0mA
6.0mA
5.0mA
PHYSICAL DIMENSIONS
6mm
0.24in
4mm
0.16in
182mm
7.165in.
LXM1643-12-63
188mm
7.40in.
36mm
1.42in.
CN2
CN3
CN1
28mm ± 0.2mm
1.10in.
CN4
W
4mm
0.16in
CN5
W
94mm
3.70in.
88mm ± 0.2mm
3.465in.
4mm GROUNDED MOUNTING HOLES
0.16in. 3.18MM ±.08 DIA.
88mm ± 0.2mm
3.465in.
4.7mm
0.18in.
1.7mm
PCB tolerances ± 0.5mm
0.67in.
All dimensions are in millimeters, inches are for reference only.
Weight: (45g) typ.
Warning
High Voltage Present at
high side of Transformer
and Output Connector
8mm Max
0.315in.
SIMPLIFIED BLOCK DIAGRAM
V B R IT E
0.5 -
2VDC
SET1
SET2
+3V
Controller
10K
Comparator
+
Ramp
-
+3V
10K
Ramp
Gen
+3V
10K
High Voltage Transformers
Output
Driver
VIN1
Z
OCSENSE
OVSENSE
Z
ISENSE
One of two
Z
VHI
VHI
VLO
VLO
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4



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