參數(shù)資料
型號(hào)： LX1686CPW-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： LEAD FREE, PLASTIC, TSSOP-24
文件頁(yè)數(shù)： 1/8頁(yè)
文件大?。?/td> 164K
代理商： LX1686CPW-TR
Not Recommended For New Design
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2000
Rev. 1.2a, 2005-01-27
WWW
.Microse
m
i
.CO
M
LX1686
Digital Dimming CCFL Controller IC
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
DESCRI PTI O N
The LX1686 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
LX1686
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 nodule
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 LX1686 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:
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
30
456075
90
105
Light Output (Nits)
Powe
rUs
ed
(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
APPLI CATI ONS
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 I N FO
PW
Plastic TSSOP
24-PIN
TA (
°C)
RoHS Complaint / Pb-free Transition D/C: 0442
0 to 85
LX1686CPW
-40 to 85
LX1686IPW
Note: Available in Tape & Reel.
Append the letters “TR” to the part number. (i.e. LX1686CPW-TR)
LL
XX
11
66
88
66
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LX1686E 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Digital Dimming CCFL Controller IC
LX1686ECPW 功能描述:IC CTRLR CCFL BACKLIGHT 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01
LX1686ECPW-TR 制造商:Microsemi Corporation 功能描述:CCFL DRVR 5.5V 24TSSOP - Tape and Reel
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
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