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參數(shù)資料
| 型號(hào)： | LXM1641-01 |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, XMA26 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 168K |
| 代理商： | LXM1641-01 |
D IGITA L D IMMING CCFL I NVER TER M ODULE
LXM1611-01
PRODUCT DA T ABOOK 1996/1997
Copyright 1999
Rev. 0.4
8/99
4
P RELIMINAR Y D ATA S HEET
P A TENT P ENDING
RangeMAX
TM
High Voltage
Transformer
I
SENSE
LAMP
V
SENSE
V
BRITE
Transformer
Driver
Ramp
Gen.
Comparator
V
SYNC(-)
V
SYNC(+)
Ramp
V
HI
V
LO
0-2.5V
DC
HOW RANGEMAX WORKS
LAMP VOLTAGE & LAMP CURRENT — Burst Mode Operation
FIGURE 1 — 50% Burst Duty Cycle
FIGURE 2 — 2% Burst Duty Cycle
FIGURE 3 — 2% Burst Duty Cycle (Expanded Time Base)
FIGURE 4 — 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 3 photo at right,
careful design consideration was given to controlling lamp
start voltage to softly start current flow. This eliminates
current overshoot that can result in premature cathode
wear and reduce 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 |
|---|---|
| LXM1641-02 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| 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 |
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