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參數(shù)資料
| 型號： | LMX1622-12-03 |
| 廠商： | Microsemi Corporation |
| 英文描述： | DUAL 5W, DIGITAL DIMMING CCFL INVERTER MODULE |
| 中文描述： | 雙5W的數(shù)字調(diào)光CCFL逆變模塊 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 239K |
| 代理商： | LMX1622-12-03 |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2000
Rev. 0.3,2001-01-18
W
M
.
RangeMAX
LXM1622-12-xx
D
UAL
5W, D
IGITAL
D
IMMING
CCFL I
NVERTER
M
ODULE
P
RELIMINARY
D
ATA
S
HEET
A M I C R O S E M I C O M P A N Y
HIGHLIGHTS (CONTINUED)
In applications with no access to a vertical sync, an onboard
oscillator operates the inverter burst rate at about 270Hz. 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.
many
applications,
but
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.
A single input will accommodate negative and positive
vertical sync pulses at any pulse width.
The Brightness control may be a voltage output DAC, or
other voltage source 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
a 2.5V to 5V logic signal to the SLEEP input. If remote
ON/OFF is not needed, connect the SLEEP input to V
IN
or
other voltage source between 2.5V and 5V.
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.
%&"
Also available in single lamp inverters LXM1612-xx-
xx, 5V dual LXM1622-05-xx and Quad Output
LXM1641-01 versions for multiple lamp applications.
LXM1622-12-xx
+12V
DC
V
SYNC
V
SYNC
GND
V
HI
V
LO
BRITE
Figure 5
- Brightness Control
V
IN
CCF
TUB
BRITE RTN
SLEEP
2.5 -
5V
0
P.W .
1mS to 200μS
BRITE
LXM1622-12-xx
0 < P.W. < 100% of period
PW M Signal
from System
Figure 5A
- PW M Brightness Control
A
P
P
L
I
C
A
T
I
O
N
S
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