Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LXMG1626-05-66 Datasheet(PDF) 5 Page - Microsemi Corporation

Part No. LXMG1626-05-66
Description  5V 10W Dual CCFL Programmable Inverter Module
Download  6 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

LXMG1626-05-66 Datasheet(HTML) 5 Page - Microsemi Corporation

  LXMG1626-05-66 Datasheet HTML 1Page - Microsemi Corporation LXMG1626-05-66 Datasheet HTML 2Page - Microsemi Corporation LXMG1626-05-66 Datasheet HTML 3Page - Microsemi Corporation LXMG1626-05-66 Datasheet HTML 4Page - Microsemi Corporation LXMG1626-05-66 Datasheet HTML 5Page - Microsemi Corporation LXMG1626-05-66 Datasheet HTML 6Page - Microsemi Corporation  
Zoom Inzoom in Zoom Outzoom out
 5 / 6 page
background image
PRODUCTION DATASHEET
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
© 2005
Rev. 1.0, 2006-01-13
PanelMatch
LXMG1626-05-66
5V 10W Dual CCFL Programmable Inverter Module
TM
®
TY PICAL APPLICATION
LXMG1626-05-66
5V
SET2
GND
VHI2
VLO
BRITE
VIN1
SLEEP
SET1
500K
DAC or
Pot
NC
NC
VHI1
Figure 1
– Brightness Control
(Output current set to maximum)
P.W.
10 µs to 20µS period
BRITE
LXMG1626-05-66
0< P.W. < 100 % of period
PWM Signal
from System
Figure 1A
– PWM Brightness Control
LXMG1626-05-66
SET2
GND
VHI2
VLO
SLEEP
SET1
BRITE
5V
VIN1
VHI1
L
L
10.0mARMS
L
H
11.5mARMS
H
L
12.8mARMS
H
H
14.0mARMS
L=GND; H=Open
Figure 2
– Max Output Current
(SET1 and SET2 Inputs)
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 VHI1 and VHI2 to high voltage wires from the
lamps. Connect VLO to the low voltage wire lamp return
(wire with thinner insulation).
Never connect VLO to
circuit ground as this will defeat lamp current regulation.
If both lamp wires have heavy high voltage insulation,
connect the longest wire to VLO. This wire is typically
white.
Use the SET1 and SET2 (see Figure 2) inputs to select the
desired maximum output current. Using these two pins in
combination allows the inverter to match a wide variety of
panels from different manufacturers. Generally the best
lamp lifetime correlates with driving the CCFL at the
manufacturer’s nominal current setting.
However the
SET1 and SET2 inputs allow the user the flexibility to
adjust the current to the maximum allowable output current
to increase panel brightness at the expense of some
reduced lamp life.
Although the SET pins are designed such that just leaving
them open or grounding them is all that is needed to set the
output current, they can also be actively set. Using an open
collector or open drain logic signal will allow you to
reduce 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 dim ratio is a factor of both the burst duty cycle and the
peak output current, using this technique the effective dim
ratio can be increased greater than the burst duty cycle
alone. Conversely, the SET inputs could be used to
overdrive the lamp temporarily to facilitate faster lamp
warm up at initial lamp turn on. Of course, any possible
degradation on lamp life from such practices is the user’s
responsibility since not all lamps are designed to be
overdriven.
The inverter has a built in fault timeout function. If both
outputs are open (lamps disconnected or broken) or shorted
to ground the inverter will attempt to strike the lamp for a
number of cycles. After about one to two seconds without
success the inverter will shutdown. In order to restart the
inverter it is necessary to toggle the SLEEP input or cycle
the VIN1 input supply


Html Pages

1  2  3  4  5  6 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn