參數(shù)資料
型號： LX1686ECPW-TR
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 穩(wěn)壓器
英文描述： FLUORESCENT LIGHT CONTROLLER, 256 kHz SWITCHING FREQ-MAX, PDSO24
封裝： ROHS COMPLIANT, PLASTIC, TSSOP-24
文件頁數(shù)： 1/8頁
文件大小： 143K
代理商： LX1686ECPW-TR
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2004
Rev. 1.1, 2006-02-27
WWW
.Microse
m
i
.CO
M
LX1686E
Digital Dimming CCFL Controller IC
PRODUCTION DATA SHEET
TM
DESCRIPTION
The LX1686E Backlight Controller
IC provides all the control functions
needed
to
implement
Microsemi’s
direct drive inverters used to operate
cold
cathode
fluorescent
lamps
(CCFL’s).
This IC can be used to
control
single
or
multiple-lamp
configurations.
CCFL’s are used for
back or edge lighting of liquid crystal
flat
panel
displays
(LCD’s)
and
typically find application in notebook
computers, web browsers, automotive
and industrial instrumentation, and
entertainment systems.
The LX1686E
includes a PWM
controlled lamp current burst circuit
that can provide a > 100:1 dimming
range from a simple zero to 2.5V
potentiometer
input.
The
PWM
dimming
burst
rate
is
easily
synchronized to the LCD panel’s frame
rate
to
prevent
interference
from
optical beat frequencies.
Safety and reliability features include
a new dual feedback control loop that
permits regulation of maximum lamp
strike voltage as well as lamp current.
Regulating
maximum
lamp
voltage
permits the designer to provide for
ample worst case lamp strike voltage
while at the same time conservatively
limit maximum open circuit voltage.
An innovative new strike voltage
generation
technique
enables
the
module
designer
to
optimize
high
voltage
transformer
design
for
maximum operating efficiency with no
power dissipating overhead to guarantee
strike capability
Direct drive topology is a non-
resonant,
oscillator-controlled
PWM
regulation method.
The LX1686E
allows a wide choice of fixed operating
frequencies to match lamp current
frequency to the lamp’s most efficient
operating point, and to minimize high
frequency interference.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected by U.S. Patents 5,615,093; 5,923,129; 5,930,121; 6,198,234; Patents Pending
PRODUCT H I GHLIGHT
0
1
2
3
4
5
0
30456075
90
105
Light Output (Nits)
Po
wer
Use
d
(W
a
tts)
Standard Analog
Dimming Inverter
Microsemi's
RangeMAX
KEY FEATUR ES
RangeMAX Wide Range
Dimming (>100:1)
Synchronizable to Display Video
Frequency
High Voltage Feedback Loop
Directly Controls Maximum Open
Lamp
Micro-Amp Sleep Mode
User Programmable Fixed
Frequency Operation
Under-Voltage Lockout Feature
With Power-Up Reset
Built-In Soft-Start Feature
Operates With 3.3V or 5V power
Supplies
100mA Output Drive Capability
APPLICATIONS
Notebooks
Instrumentation Display
Desktop Computer Monitors
Low Ambient Light Displays
(used in Aircraft, Automobiles,
and Hand-Held Equipment)
BENEFITS
Extremely High Efficiency From
3.3V to 5V Power Supplies
Lower Cost Than Conventional
Buck / Royer Inverter Topologies
Improved Lamp Strike Capability
Improved Over-Voltage Control
PACKAGE ORDER INFO
PW
Plastic TSSOP
24-PIN
TA (°C)
RoHS compliant / Pb-free
0 to 85
LX1686ECPW
-40 to 85
LX1686EIPW
Note: Available in Tape & Reel. Append the
letters “TR” to the part number. (i.e.
LX1686ECPW-TR)
LL
XX
11
66
88
66
EE
Light emitted by a CCFL is proportional to the current flowing through it.
There are two ways to control the current: by adjusting the amplitude of a
continuous AC current; or, as with RangeMAX technology, by varying the
amount of time a burst of full current is present. RangeMAX technology
frees the backlight inverter module designer to operate in a lower
brightness and lower power consumption mode than is possible with
conventional amplitude control methods.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LX1686EIPW 制造商:Microsemi Corporation 功能描述:REPLACEMENT FOR LX1686IPW - Bulk 制造商:Microsemi Corporation 功能描述:LX1686EIPW Series -0.3 to 0.5 V Digital Dimming CCFL Controlling IC - TSSOP-24
LX1686EIPW-TR 制造商:Microsemi Corporation 功能描述:CCFL DRVR 5.5V 24TSSOP - Tape and Reel
LX1686IPW 制造商:Microsemi Corporation 功能描述:
LX1688 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:MULTIPLE LAMP CCFL CONTROLLER
LX1688_06 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Multiple Lamp CCFL Controller
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