LXM1626-12-64 [MICROSEMI]
12V Dual 6W CCFL Programmable Inverter Module; 12V双路6W CCFL可编程逆变器模块
| 型号： | LXM1626-12-64 |
| 厂家： | 
Microsemi |
| 描述： | 12V Dual 6W CCFL Programmable Inverter Module |
| 文件： | 总6页 (文件大小：173K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
KEY FEATURES
DESCRIPTION
The LXM1626-12-64 is a Dual 6W
Output Direct Drive™ CCFL (Cold Technique
Cathode Fluorescent Lamp) Inverter brightness control in any wide range
Module specifically designed to be typically (100:1+) dimming application.
RangeMAX
Digital
provides
Dimming
flicker-free
Externlly Programmable
Maximum Output Current
Easy to Use Brightness Control
RangeMAX Wide Range Dimming
Output Open & Short-Circuit
Protection and Automatic Strike-
Voltage Regulation and Timeout
Fixed Frequency Operation
Rated From -20 to 70°C
compatible
with
the
Sharp
The resultant “burst drive” that
LQ150X1LGN2(A),(H), 15” or similar energizes the lamp is designed
dual lamp displays that have both specifically to ensure that no premature
individual lamp output connectors on the lamp degradation occurs, while allowing
one side of the panel.
LXM1626 modules provide the levels.
designer with a vastly superior display
brightness range. This brightness range is the system battery or AC adapter directly
achievable with virtually any LCD display. to high frequency, high-voltage waves
The modules are available with a required to ignite and operate CCFL
dimming input that permits brightness lamps.
significant power savings at lower di
APPLICATIONS
LCD’s requiring both output
connectors on one side of panel
Sharp LQ150X1LGN2(A)(H)
Desktop Displays
The modules convert DC voltage from
Industrial Display Controls
control from either, a DC voltage source,
a PWM signal or external Potentiometer.
The maximum output current is mode CCFL backlight controller, which
externally programmable (through the provides number cost and
input connector) over a range of 3.5 to performance advantages due to the
5mA in 0.5mA steps. This allows the controller’s high level of integration.
inverter to match the panel’s lamp current
specifications, or it can be used to are stable fixed-equency operation,
purposely drive the lamps at a lower or secondary-side strike-voltage regulation
higher current to decrease or increase and both open/shorted lamp protection
The
modules
design
utilizes
BENEFITS
Microsemi’s LX1691 Eanced Mult-
Smooth, Flicker Free 1%-100%
Full-Range Brightness Control
Programmable output current
allows inverter to mate with a
wide variety of LCD panel’s
specifications
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
a
Other benefits of this new topology
nominal brightness.
with fault timet.
IMPORTANT: For the most current data, consult MICROSEMI’s website: ht://www.microsemi.com
Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198,234; Patents Pending
PRODUCT HIGHLIGHT
U
NIVERSAL
D
MING
I
NPUT
"
PWM", VDC, OR
P
OTENTIOMETER
PWM
Signal
DC Voltag
Source
Potentiometer
S
ELECTABLE
M
AXIMUM OUTPUT CURRENT 3.5MA
TO 5MA RMS
PACKAGE ORDER INFO
I
NVERTER
M
C
ATES
DIRECTLY TO PANEL
P
ART
N
UMBER
OUTPUT CONNECTOR
ONNECTORS
LXM1626-12-64 JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00
JST BHSR-02VS-1
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Page 1
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS (NOTE 1)
Input Signal Voltage (VIN1).....................................................................................................................................-0.3V to 16V
Input Power...................................................................................................................................................................... 14W
Output Voltage, no load ............................................................................................................ Internally Limited to 1800VRMS
Output Current ...........................................................................................................................75mARMS (Internally Limited)
Output Power (each output) ............................................................................................................................................. 6.0W
Input Signal Voltage (
Input).................................................................................................................... -0.3V to VIN1
SLEEP
Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V
Ambient Operating Temperature, zero airflow....................................................................................................-20°C to 70°C
Operating Relative Humidity, non-condensing .......................................................................................................... ≤90%
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 Groud. 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.
ommended Operating Conditions
Parameter
Symbol
Units
Min
R.C.
Max
Input Supply Voltage Range (Fully Regulated
Lamp Current)
Input Supply Voltage Range (Functional)
Output Power (each output)
Linear BRITE Control Input Voltage Range
Lamp Operating Voltage
10.8
10.2
12
13.2
VIN1
V
12
4.4
14.4
5.5
2.0
1250*
5.0
70
PO
VBRT_ADJ
P
IOLAMP
TA
W
V
VRMS
mARMS
°C
0.1
1100
Lamp Current (Full Brightness)
Operating Ambient Temperature Range
3.5
-20
* Total output power must not exceed 6W. Higher voltage lamps may require maximum output current to be set lower than 5mARMS
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
LXM1626-12-64
Parameter
Sym
Test Conditions
Units
Min
Typ
Max
OUTPUT PIN CHARACTERISTICS
`
VBRT_ADJ > 2.0VDC
,
> 2.0V, VIN1 = 12VDC
SLEEP
ISET1 = Ground, ISET2 = Ground
VBRT_ADJ > 2.0VDC
Full Bright Lamp Current (each output)
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
ILL%DEV
IL(MIN)
3.0
3.5
4.0
4.5
3.5
4.0
4.5
5.0
3
4.0
4.5
5.0
5.5
mARMS
mARMS
mARMS
mARMS
%
,
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
SLEEP
ISET1 = Ground, ISET2 = Open
VBRT_ADJ > 2.0VDC
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each put)
,
SLEEP
ISET1 = Open, ISET2 = Ground
VBRT_ADJ > 2.0VDC
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ > 2.0VDC
Output Current Lamp to Lamp
Deviation
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ = 0VDC
Min. Average Lamp Current
(each output)
,
SLEEP
ISET1 = ISET2 = Ground
-20°C < TA < 70°C, VIN1 > 10.8VDC
0.08
mARMS
Lamp Start Voltage
Operating Frequency
Burst Frequency
VLS
fO
1450
62
1650
65
VRMS
kHz
Hz
VBRT_ADJ = 2.5VDC > 2.0V, VIN1 = 12V
,
68
SLEEP
fBURST
Output Burst Frequency
121
127
133
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Page 2
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION 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.
LXM1626-12-64
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
BRITE INPUT
`
VBRT_ADJ = 0VDC
BRT_ADJ = 3VDC
-15
1
µADC
µADC
Input Current
IBRT
V
Minimum Input for Max. Lamp Current VBRT_ADJ IO(LAMP) = Maximum Lamp Current
Maximum Input for Min. Lamp Current VBRT_ADJ IO(LAMP) = Minimum Lamp Current
SLEEP INPUT
2.0
2.05
VDC
VDC
0
`
`
`
VSLEEP
VSLEEP
RUN Mode
2.1
VIN1
0.8
VDC
VDC
SLEEP Mode
-0.3
SET1,2 INPUT
SET1,2 Low Threshold
Input Current
VL
0.4
50
V
ISET
VSET ≤ 0.4V
-300
µA
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IIN(RUN)
VIN1 = 12VDC
VIN1 = 12VDC
,
,
< 0.8V
0.0
10
µADC
SLEEP
SLEEP
≥ 2.0V, ISET1 = Ground
Run Current
Efficiency
960
mADC
ISET2 = Open, V= 1050VRMS
VIN1 = 12VDC ≥ 2.0V, ISET1 = Ground
,
SLEEP
ISET2 = Open, VLAMP = 1050VRMS
78
%
η
FUNCTIONAL PIN DESCRIPTION
C
ONN
PIN
DESCRIPTION
CN1 (Molex 53261-0890) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501 input cable assembly
CN1-1
VIN1
Main Input Power Supply (10.8V < VIN1 < 13.2V)
Power Supply Rn
CN1-2
CN1-3
CN1-4
GND
CN1-5
ON/OFF Control. (0V <
< 0.8 = OFF,
>= 2.1V = ON
SLEEP
SLEEP
BRITE
SET1
SLEEP
CN1-6
CN1-7
CN1-8
Brightness Control (0V to 2.0VDC). 2.0VDC gives maximum lamp current.
SET1 MSConnecting this pin to ground decreases the output current (see Table 1)
SET2 LSB Connecting this pin to ground decreases the output current (see Table 1)
SET2
CN2, CN3 for LXM1626-12-64 (JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00 )
CN2-1
CN3-1
Hioltage connection to high Side of lamp. Connect to lamp terminal with shortest lead length.
DO OT connect to Ground.
VHI
CN2-2
CN3-2
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
VLO
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Integrated Products
Page 3
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
SET2
(Pin 8)
Open*
Ground
Open*
Nominal Output Current
(Pin 7)
Open*
Open*
Ground
Ground
5.0mA
4.5mA
4.0mA
3.5mA
Ground
* If driven by a logic signal it should be open collector or open drain only, not a voltage source.
PHYSICAL DIMENSIONS
L X M1626- 1 2-64
165mm
6.50in.
G
ROUNDED MOUNTING HOLE 3MM ±.08 DIA.
14mm
0.559in.
5MM HEAD CLEARANCE BOTH HOLES
W
3.0mm
0.118in.
21mm
0.827in.
18mm
0.709in.
14mm
0.551in.
137mm
5.394in.
1.0mm
0.0394in.
7.5mm
0.295in.
Max
Typical weight: 18g
PCB tolerances ± 0.5mm , 4-40 recommended mounting screws
All Dimensions are in millimeters, inches for reference only.
SIMPLIFIED BLOCK DIAGRAM
+3V
215K
High Voltage
Transformer
Controller
Comrator
VHI
VBRITE
+
VIN1
0 -
2VDC
9.09K
+3V
Ram
Transformer
Driver
-
Ramp
Gen
OCSENSE
10K
SET1
SET2
+3V
OVSENSE
10K
ISENSE
VLO
One of two
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Page 4
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
TYPICAL APPLICATION
12V
VIN1
The brightness control may be a voltage output DAC or
other voltage source, a digital pot or 500K manual pot. The
inverter contains an internal 215K pull-up to 3V to bias the
pot. A 3.3V Logic Level PWM signal from a micro-
controller may also be used as shown in Figure 1A.
DAC or
Pot
BRITE
VHI
500K
LXM1626-12-64
CCFL
TUBE
If you need to turn the inverter ON/OFF remotely, connect
to TTL logic signato the
input.
SLEEP
Connect VHI th voltage wire from the lamp. Connect
VLO to the low voltage wire (wire with thinner insulation).
Never connet VLO to circuit ground as this will defeat
lamp curret regulation. If both lamp wires have heavy
SLEEP
VLO
ONE OF
TWO
SET1
SET2
NC
GND
NC
high voltage insulation, connect the longest wire to VLO
.
This wire is typically white.
Figure 1 – Brightness Control
(Output current set to maximum)
Use the SET1 and SET2 (see Figure 2) inputs to select the
desired maximum output current. Using these two pins in
mbination allows the inverter to match a wide variety of
panels from different manufactures. Generally the best
mp lifetime correlates with driving the CCFL at the
manufactures nominal current setting. However the SET1
and SET2 inputs allow the user the flexibility to adjust the
current to the maximum allowable output current to
increase panel brightness at the expense of some reduced
lamp life.
PWM Signal
from System
BRITE
P.W.
LXM1626-12-64
Although the SET pins are designed such that just leaving
them open or grounding them is all that is needed to set the
output current, they can also be actively set. Using a open
collector or open drain logic signal will allow you to
reduce the lamp current for situations where greater dim
range is required, as an example in nighttime situations. In
conjunction with a light sensor or other timer the panel
could be set to higher brightness (maximum output
current) for daytime illumination and lower brightness
(minimum or typical output current) at nighttime. Since
the dim ratio is a factor of both the burst duty cycle and the
peak output current, using this technique the effective dim
ratio can be increased greater than the burst duty cycle
alone. Conversely, the SET inputs could be used to
overdrive the lamp temporarily to facilitate faster lamp
warm up at initial lamp turn on. Of course, any possible
degradation on lamp life from such practices is the user’s
responsibility since not all lamps are designed to be
overdriven.
10µs to 20µS
0 < P.W. < 100% of period
Figure 1A – PWM Brightness Control
12V
VIN1
BRITE
VHI
CCFL
TUBE
LXM1626-12-64
SLEEP
SET1
VLO
SET2
G
ONE OF
TWO
The inverter has a built in fault timeout function. If the
output is open (lamp disconnected or broken) or shorted to
ground the inverter will attempt to strike the lamp for
number of cycles. After about 800 milliseconds without
success the inverter will shutdown. In order to restart the
inverter it is necessary to toggle the SLEEP input or cycle
the VIN1 input supply
L
L
H
H
L
H
L
3.5mARMS
4.0mARMS
4.5mARMS
5.0mARMS
H
L=GND; H=Open
Figure 2 – Max Output Current
(SET1 and SET2 Inputs)
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Page 5
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1626-12-64
®
12V Dual 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
NOTES
PRODUCTION DATA – Information contained in this document is proprietary to
Microsemi and is current as of publication date. This document may not be modified in
any way without the express written consent of Microsemi. Product processing does not
necessarily include testing of all parameters. Microsemi reserves the right to change the
configuration and performance of the product and to discontinue product at any time.
Copyright © 2003
Rev. 1.1a, 2005-01-17
Microsemi
Page 6
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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