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参数资料
| 型号： | LXM1621-04 |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 文件页数： | 9/10页 |
| 文件大小： | 280K |
| 代理商： | LXM1621-04 |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
Copyright
2000
Rev. 1.0a, 2005-02-07
WWW
.Microse
m
i
.CO
M
RangeMAX
LXM1621-xx
DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
HOW THE RANGEMAX WORK S (CONTINUED )
HIGHLIGHTS (CONTINUED)
In applications with no access to a vertical sync, the
inverter burst frequency can be allowed to “free run” at
95Hz.
In this non-synchronous mode, minor display
disturbances may be found under certain video conditions.
This performance is acceptable for many applications, but
synchronization must be used when no disturbance can be
tolerated.
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.
TY PI CAL APPLI CATI O N
The brightness control may be a simple 10k potentiometer
or a voltage output DAC. A PWM signal from a micro-
controller may also be used with a suitable filter such as
shown in figure 8.
If synchronization to the video frame rate is desired,
connect the vertical sync pulse from the system video
controller to the appropriate VSYNC input.
If no video
synchronization is desired, connect VSYNC to ground.
If you need to turn the inverter ON/OFF remotely, connect
a 3V or 5V logic signal to the SLEEP input. If remote
ON/OFF is not needed, connect the SLEEP input to VIN or
any other voltage greater than 2.2VDC.
Connect VHI to high voltage wire from the lamp. Connect
VLO to the low voltage wire (wire with thinner insulation).
If both lamp wires have heavy high voltage insulation,
connect the longest wire to VLO. VLO is connected directly
to ground (GND pin) on the inverter PCB. Always insure
a good lamp return by using a wire. Do not rely on a
chassis ground connection.
RangeMAX INVER TER S
Also available in single lamp inverters are the
LXM1612-xx-xx or LXM1615-xx-xx, as well as the
12V dual lamp LXM1621-12-xx, LXM1622-xx-xx, and
the Quad output LXM1641-01 versions for multiple
lamp applications.
LXM1621-xx
12V
V
SYNC
V
SYNC
GND
V
HI1
V
LO
BRITE
Figure 7- Brightness Control
V
IN
SLEEP
5V
0
< 10k
2.5V
DC
V
HI2
P.W.
< 100s
BRITE
LXM1621-xx
0 < P.W. < 100% of period
PWM Signal
from System
Figure 8 - PWM Brightness Control
4.7F
4.99k*
4.99k
* use 4.99k for 5V PWM amplitude, 15k for 3.3V PWM
amplitude, and omit for 2.5V PWM amplitute.
AA
PP
LL
IICC
AA
TT
IIOO
NN
SS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LXM1621-XX | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1622-05-01 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-02 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-03 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-XX | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:DUAL 5W, DIGITAL DIMMING CCFL INVERTER MODULE |
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