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參數(shù)資料
| 型號： | LXM1597-01 |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | 5V CCFL INVERTER MODULES |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, XMA10 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大小： | 233K |
| 代理商： | LXM1597-01 |
5 V C C F L I
N V E R T E R
M
O D U L E S
LXM1597-01
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Copyright 1998
Rev. 0.6a 10/00
4
Not Recommended for New Designs
P
AT E N T
P
E N D I N G
C O N N E C T I O N D I A G R A M
R
1
= 100k typical, 5k minimum
R
2
= Value optional to determine lowest
brightness setting
R
2
= 0.5 R
1
minimum
Lamp Current (%) =
x 100
V
BRITE
V
REF
FIGURE 1
— Recommended Connection Diagram
E F F I C I E N C Y M E A S U R E M E N T S E T U P
INTRODUCTION
The best method for evaluating high voltage, high frequency
inverters is by directly measuring light output versus power
input. This method is highly recommended when evaluating
inverter modules.
The following sections outline the recommended method
for testing these modules.
the end of the 30 minute period read the light output in cd/m
2
(1 cd/m
2
= 1 Nit), as well as input voltage and current. Typical
applications require about 70 to 100 Nits out of the screen.
With the temperature probe record the temperature rises of
critical components such as the high voltage transformer and
the inductor.
The light output efficiency of the module can be calculated
by the following equation:
Eff =
=
For competitive evaluation with another module from Linfinity
or another manufacturer repeat the above steps for the second
module.
After taking the data on the second module, compare the
temperature rises on the transformer and inductors. The main
figure of merit comparison is done between the two Eff num-
bers as follows:
Percent More Efficient =
* 100
The result of the above shows how much more efficient mod-
ule #1 is than module #2.
Light Output (in Nits)
V
IN (DC)
* I
IN (DC)
Nits
Watt
Eff
1
- Eff
2
Eff
2
EQUIPMENT REQUIRED
1) Two DVM's with 0.1% or better accuracy.
2) A lab power supply. (0 - 20V, 0 - 2A)
3) The target notebook or LCD panel.
4) A Tektronix J1803 Luminance Head.
5) A Tektronix J17 Luminance Color Photometer.
6) A non-contact infrared temperature sensor
(i.e. Fluke 80T-IR) with a mV meter.
MEASUREMENT SETUP
Figure 2 shows the connection diagram for light output mea-
surements. The photometer luminance head (J1803) is posi-
tioned directly in the center of the LCD screen. For best re-
sults open an application such as the Paintbrush program and
choose the maximized view so that the entire screen is "white".
After application of the power to the CCFL wait at least 30
minutes to allow for the lamp and light output to stabilize. At
LXM1597-01
V
REF
BRITE
AGND
From Power
Management
Logic
LAMP HI
V
IN
SLEEP
LAMP LO
GND
R
1
100k
R
2
51k
CMOS or TTL gate
CFL
TUBE
Longest Lead
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| LXM1598-01 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:12V CCFL INVERTER MODULES |
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| LXM1611-01 | 功能描述:MOD CCFL INVERTER DIGITAL DIM RoHS:否 類別:光電元件 >> 反相器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 輸入電壓:6.0V 輸出:900V 類型:用于 CCFL 和 UV 燈的逆變器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安裝類型:底座安裝 |
| LXM1612-05-01 | 功能描述:MOD CCFL INVERTER DIGITAL DIM 5V RoHS:否 類別:光電元件 >> 反相器 系列:LXM1612-05-xx 標(biāo)準(zhǔn)包裝:100 系列:- 輸入電壓:6.0V 輸出:900V 類型:用于 CCFL 和 UV 燈的逆變器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安裝類型:底座安裝 |
| LXM1612-05-01B | 制造商:Microsemi Corporation 功能描述:LXM1612-05-01B - Tape and Reel |
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