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參數(shù)資料
| 型號(hào)： | LXM1612-12-02 |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | 12V Highly-Integrated, Digital Dimming CCFL Inverter Module |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LXM1612-12-02 |
P
RELIMINARY
D
ATASHEET
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2000
Rev. 0.3f, 2000-12-06
W
M
.
LXM1612-12-xx
12V Highly-Integrated, Digital Dimming CCFL Inverter Module
A M I C R O S E M I C O M P A N Y
Integrated brightness control circuit includes a DC voltage to
pulse width converter that minimizes system design work and
system noise susceptibility. This provides a familiar and
convenient interface while reducing the potential for
externally induced noise, which can cause lamp flicker.
RangeMAX inverter modules are designed to operate with the
burst frequency synchronized to the video frame rate. This
provides operation with no visible display disturbances
caused by beat frequencies between the lamps and video
frame rates. In this synchronous mode, the inverter burst rate
operates at twice the video refresh rate, well beyond standard
50/60Hz video refresh rates where the eye can perceive
pulsing light.
In applications with no access to a vertical sync., an onboard
oscillator operates the inverter burst rate at about 250Hz. In
this non-synchronous mode, minor display disturbances can
be found under certain video conditions. This performance
may
be
acceptable
for
synchronization must be used when no disturbance can be
tolerated.
A single input will accommodate negative and positive
vertical sync pulses at any pulse width.
Separate feedback loops for lamp current and open circuit
voltage regulation insure reliable strike under all operating
conditions, automatic over-voltage prevention with broken
or failed lamps, and accurate lamp current regulation.
many
applications,
but
LXM1612-12-xx
12V
V
SYNC
V
SYNC
GND
V
HI
V
LO
BRITE
Figure 5
- Potentiometer Brightness Control
V
IN1
CCFL
TUBE
BRITE RTN
R
10k
SLEEP
0V
5V
DAC or
Pot
P.W .
< 2ms
BRITE
LXM1612-12-xx
0 < P.W. < 100% of period
PW M Signal
from System
Figure 5A
- PW M Brightness Control
The brightness control may be a voltage output DAC, digital
resistor or a simple 10k potentiometer. If desired, an
additional series resistor with the 10k potentiometer can be
used to set a higher minimum brightness setting as shown in
Figure 5. A 2.5V to 5V Logic Level PWM signal from a
micro-controller may also be used as shown in Figure 5A.
If synchronization to the video frame rate is desired, connect
the vertical sync pulse from the system video controller to
the V
SYNC
input. If no video synchronization is desired,
connect V
SYNC
to ground.
If you need to turn the inverter ON/OFF remotely, connect
to 2.5V to 5V logic signal to the
SLEEP
input.
Connect V
HI
to high voltage wire from the lamp. Connect
V
LO
to the low voltage wire (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.
&'
(
The LXM1612-05 output current can be adjusted by changing the
value of two resistors on the PCB. The following table shows the
approximate new output current values:
Output Current
7.0mA
6.0mA
5.8mA
5.0mA
4.0mA
3.0mA
R12
R16
2.00K 1%
2.61K 1%
2.74K 1%
2.74K 1%
2.74K 1%
2.74K 1%
Not Used
Not Used
Not Used
499K 1%
178K 1%
78.7K 1%
C2
U1
C9
R7
C11
R14
R15
C15
C12
R11
C14
C13
R10
C16
C10
R13
C
R3
R4
C3
C4
R2
C5
C6
C8
R5
R6
R
R
R
R
C21
R38
R39
R
R
R
R41
R20
C7
R21
U
R34
R33
R30
U4
D
D
R16
R12
-
Component Replacement Locations
D
E
S
C
R
I
P
T
I
O
N
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| LXM1612-12-03 | 12V Highly-Integrated, Digital Dimming CCFL Inverter Module |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXM1612-12-03 | 功能描述:MOD INVERTER CCFL DGTL SGL 12V RoHS:否 類別:光電元件 >> 反相器 系列:LXM1612-12-xx 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 |
| LXM1612-12-XX | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:12V Highly-Integrated, Digital Dimming CCFL Inverter Module |
| LXM1614 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE |
| LXM1614-14-11 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE |
| LXM1614E-14-11 | 功能描述:MOD INVERTER CCFL DGTL DUAL OUT RoHS:否 類別:光電元件 >> 反相器 系列:- 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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