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參數(shù)資料
| 型號(hào)： | LXM1641-02 |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 文件頁(yè)數(shù)： | 11/11頁(yè) |
| 文件大?。?/td> | 232K |
| 代理商： | LXM1641-02 |
LXM1641-01/-02/-03
11
The following application defines techniques capable of deliver-
ing dimming ranges in the 250:1 and 1000:1 range. As is widely
understood, hese echniques will provide general capabilities and actual
system performance will vary with panel design, CCFTs, ambient tem-
perature and a number of other variables outside the control of the
inverter. These methods can be used in conjunction with other tech-
niques such as amp heating and matching.
Wide ratio (1000:1) dimming can be accomplished using the Linfinity
inverter n two ways:
1) By varying the input voltage on the brightness pin as
indicated in Figure 12. Caution must be exercised when
applying negative voltage to the brightness control input.
Applying more than -300mV to any inverter input will cause
inverter malfunction (see Absolute Maximum Ratings).
2) By making a resistor value change on the module. If this
option is preferrable, please contact the factory for applica-
tion assistance.
Both methods discussed will provide a lower duty cycle
operation than is necessary in a 100:1 dimming application.
Careful consideration should be made with regards to display quality
FIGURE 12
— Average Lamp Current vs. V
BRITE
Voltage
(per Lamp)
PRELIMINARY DATA - Information contained in this document is pre-production data, and is proprietary to LinFinity. It may
not modified in any way without the express written consent of LinFinity. Product referred to herein is offered in sample form
RangeMAX
and
Direct Drive
are trademarks of Linfinity Microelectronics Inc.
&
3&
0&
7
V
BRT ADJ
(V)
I
O
Our multi-output inverters are designed to keep your application
operating at near normal brightness in the event that a lamp fails.
This allows the display to remain "on-line" until lamp replacement
is convenient.
Linfinity "parallels" the lamps so that if any lamps break, most
of the current is added to the remaining good lamps. CCFLs will
respond with more brightness for a period of time. Operating time
in this mode will be a function of the lamps age but should be
typically in the order of hundreds of hours.
This operating characteristic can provide adequate display
performance for a limited, but useful period of time. Shortening
of the lamp life in this mode is typically not a concern as it is
recommended that all lamps in a display be replaced at the same
time.
FIGURE 13
— Quad Output Stage
I
S
Lamps
at these dimming levels. At very low brightness levels, even very small
amounts of noise on the V
line can cause flicker on the display, so
special care must be given to grounding, filtering and shielding the
inverter from the digital ogic and clock.
Also available in Single
Output
LXM1611-01,
LXM1612-xx-xx
and Dual
Output
LXM1621-xx
versions
for multiple lamp applications.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXM1641-03 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1643-12-63 | 12V Quad 6W CCFL Programmable Inverter Module |
| LXMG1611-01 | Digital Dimming CCFL Inverter Module |
| LXMG1612-05-01 | 5V Highly-Integrated, Digital Dimming CCFL Inverter Module |
| LXMG1612-05-02 | 5V Highly-Integrated, Digital Dimming CCFL Inverter Module |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXM1641-03 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1643-12-61 | 功能描述:MOD INVERTER CCFL QUAD 6W 12V RoHS:否 類別:光電元件 >> 反相器 系列:LXM1643-12-6x 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 |
| LXM1643-12-62 | 功能描述:MODULE CCFL PROG INVERTER 12V RoHS:否 類別:光電元件 >> 反相器 系列:LXM1643-12-6x 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 |
| LXM1643-12-63 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:12V Quad 6W CCFL Programmable Inverter Module |
| LXM1644-12-61 | 功能描述:MOD INVERTER CCFL QUAD 6W 12V RoHS:否 類別:光電元件 >> 反相器 系列:LXM1644-12-6x 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 |
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