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參數(shù)資料
| 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)： | 6/8頁 |
| 文件大?。?/td> | 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
6
P RELIMINAR Y D ATA S HEET
P A TENT P ENDING
RangeMAXTM
High Voltage
Transformer
I
SENSE
LAMP
1
V
SENSE
V
BRITE
Transformer
Driver
Ramp
Gen.
Comparator
V
SYNC
Ramp
V
HI1
V
LO
0-2.5V
DC
HOW RANGEMAX WORKS
LAMP VOLTAGE & LAMP CURRENT — Burst Mode Operation
FIGURE 4 — 50% Burst Duty Cycle
FIGURE 5 — 2% Burst Duty Cycle
FIGURE 6 — 2% Burst Duty Cycle (Expanded Time Base)
FIGURE 7 — RangeMAX Block Diagram
Rather than using the traditional dimming technique of
varying lamp current magnitude to adjust light output,
RangeMAX inverters use a fixed lamp current value with
a duty cycle control method.
The lamp current burst width can be modulated from
100% (continuous lamp current) down to a 2% duty cycle,
allowing the lamp to be dimmed to less than 1% of its
full brightness.
As can be seen in Trace 4 of Figure 6, careful design
consideration was given to controlling lamp start voltage
to softly start current flow. This eliminates current over-
shoot that can result in premature cathode wear and re-
duce lamp life.
(770V
RMS)
(7.6mA
RMS)
(760V
RMS)
(6.7mA
RMS)
(760V
RMS)
(6.7mA
RMS)
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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(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 |
| 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(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 |
| 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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