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| 型號： | LXM1621-02 |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 文件頁數(shù)： | 8/8頁 |
| 文件大小： | 206K |
| 代理商： | LXM1621-02 |
DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
LXM1621-xx
PRODUCT DA T ABOOK 1996/1997
Copyright 1999
Rev. 0.5 11/99
8
P RELIMINAR Y D ATA S HEET
P A TENT P ENDING
RangeMAXTM
1000:1 DIMMING APPLICATION
The following application defines techniques capable of deliver-
ing dimming ranges in the 250:1 and 1000:1 range. As is widely
understood,thesetechniqueswillprovidegeneralcapabilitiesandactual
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 lamp heating and matching.
FIGURE 9 — Average Lamp Current vs. V
BRITE Voltage
(per Lamp)
Wide ratio (1000:1) dimming can be accomplished using the
Linfinity inverter in two ways:
1) By varying the input voltage on the brightness pin as
indicated in Figure 9. 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 at these dimming levels. At very low brightness levels,
even very small amounts of noise on the V
BRITE line can cause
flicker on the display, so special care must be given to grounding,
filtering and shielding the inverter from the digital logic and clock.
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
only, and Linfinity reserves the right to change or discontinue this proposed product at any time.
RangeMAX and Direct Drive are trademarks of Linfinity Microelectronics Inc.
RangeMAX INVERTERS
Also available in Single
OutputLXM1611-01,
LXM1612-xxor Quad Output
LXM1641-01 versions for
multiple lamp applications.
0V
2.5V
-100mV
7
0.7
.14
.070
V
BRT ADJ (V)
I OLAMP
(mA)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXM1621-03 | 功能描述:MOD INVERTER CCFL DIM DUAL 6.5MA RoHS:否 類別:光電元件 >> 反相器 系列:LXM1621 標準包裝: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 |
| LXM1621-04 | 功能描述:MOD INVERTER CCFL DIM DUAL 5MA RoHS:否 類別:光電元件 >> 反相器 系列:LXM1621 標準包裝: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 |
| LXM1621-XX | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1622-05-01 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-02 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CCFL Inverter Module - Dual Lamp |
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