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| 型號： | LXMG1626-12-46 |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | 12V Dual 6W CCFL Programmable Inverter Module |
| 中文描述： | VACUUM FLUOR DISPLAY DRIVER, DMA12 |
| 封裝： | ROHS COMPLIANT PACKAGE-12 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 191K |
| 代理商： | LXMG1626-12-46 |
P
RODUCTION
D
ATASHEET
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2005
Rev. 1.0, 2007-01-05
W
M
.
C
PanelMatch
LXMG1626-12-46
12V Dual 6W CCFL Programmable Inverter Module
TM
T Y P I C A L A P P L I C A T I O N
LXMG1626-12-46
12V
FAULT
`
NC
GND
V
HI2
V
LO
BRITE
V
IN1
SLEEP
SET
500K
DAC or
Pot
NC
V
HI1
Figure 1
– Brightness Control
(Output current set to maximum)
P
.
W
.
10 μs
to
200 μS
BRITE
LXMG1626-12-46
0 < P.W. < 100 % of period
PWM Signal
from System
Figure 1A
– PWM Brightness Control
LXMG1626-12-46
FAULT
GND
V
HI2
V
LO
SLEEP
SET
1
BRITE
12V
V
IN1
V
HI1
Lamp(s) Status
Normal Operation
FAULT
Low
Inverter Operation
Normal full lamp current
Normal @ ~ lamp
current*
Shutdown
One Lamp Open
High
Both Lamps Open
One Lamp High
Side Short to
Ground
Both Lamps High
Side Short to
Ground
High
High
Normal @ ~ lamp
current*
High
Shutdown
Figure 2
– FAULT Output Operation
* Under some conditions the second lamp will also shutdown, this is especially true
if the inverter draws an arc going open or when shorted.
The brightness control may be a voltage output DAC or
other voltage source, a digital pot or 500K manual pot. The
inverter contains an internal 215K pull-up to 3V to bias the
pot. A 3.3V Logic Level PWM signal from a micro-
controller may also be used as shown in Figure 1A.
If you need to turn the inverter ON/OFF remotely, connect
to TTL logic signal to the
SLEEP
input.
Connect V
HI1
and V
HI2
to high voltage wires from the
lamps. Connect V
LO
to the low voltage wire lamp return
(wire with thinner insulation). Never connect V
LO
to circuit
ground as this will defeat lamp current regulation. If both
lamp wires have heavy high voltage insulation, connect the
longest wire to V
LO
. This wire is typically white.
Use the SET input to program the desired maximum output
current. Generally the best lamp lifetime correlates with
driving the CCFL at the manufactures nominal current
setting.
Typically the SET pin is permanently wired to ground or
intentionally left open. However it can also be actively
driven, using an open collector or open drain logic signal.
This will allow dynamic adjustment of the lamp current for
situations where greater dim range is required, as an
example in nighttime situations. In conjunction with a light
sensor or other timer the panel could be set to higher
brightness (maximum output current) for daytime
illumination and lower brightness (minimum or typical
output current) at nighttime. Since the dimming ratio is a
factor of both the burst duty cycle and the peak output
current, by using this technique the effective dim ratio can
be increased greater than what the burst duty cycle alone
could provide. Conversely, the SET input could be used to
overdrive the lamp current temporarily to facilitate faster
lamp warm up at initial lamp turn on. Of course, any
possible degradation of lamp life from such practices is the
user’s responsibility since not all lamps are designed to be
under or overdriven.
Input connector (CN1-8) FAULT signal which is normally
low will toggle high to indicate that an output fault
condition has occurred as summarized in the table to the left
figure 2. FAULT will toggle high if one or both lamps are
open or short circuited. If only one lamp opens, or its high
side shorts to ground then the other lamp should continue to
operate with the FAULT signal going high. If both lamps
open and/or both lamps are shorted the FAULT will toggle
high if it is not already high and the inverter output will
shutdown. Also if either low side connection of the lamps
is shorted to ground, or the lamps are shorted high side to
low side, FAULT will go high and the inverter will
shutdown. In order to restart the inverter after a fault it is
necessary to toggle the SLEEP input or cycle the V
IN1
input
supply. In fault induced shutdown mode the inverter will
draw about 15mA from V
IN1
supply.
A
P
P
L
I
C
A
T
I
O
N
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXMG1626-12-46_0708 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:12V Dual 6W CCFL Programmable Inverter Module |
| LXMG1626-12-64 | 功能描述:MOD INVERTER CCFL DUAL 6W 12V RoHS:是 類別:光電元件 >> 反相器 系列:PanelMatch™ 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 |
| LXMG1626-12-65 | 功能描述:12V 10W DUAL CCFL PROG INV MOD RoHS:否 類別:光電元件 >> 反相器 系列:PanelMatch™ 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 |
| LXMG1626-12-66 | 功能描述:MOD INVERTER CCFL DUAL 10W 12V RoHS:是 類別:光電元件 >> 反相器 系列:PanelMatch™ 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 |
| LXMG1626-12-67 | 功能描述:MOD INVERTER CCFL DUAL 10W 12V RoHS:是 類別:光電元件 >> 反相器 系列:PanelMatch™ 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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