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參數(shù)資料
| 型號： | LX1686CPW |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | FLUORESCENT LIGHT CONTROLLER, 256 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 139K |
| 代理商： | LX1686CPW |
DESCRIPTION
KEY FEATURES
s RangeMAXTM Wide Range Dimming (>100:1)
s Synchronizable To Display Video Frequency
s High Voltage Feedback Loop Directly
Controls Maximum Open Lamp And
Minimum Strike Voltages
s Transformer Protected From Over-Heating
During Lamp Striking
s Micro-Amp Sleep Mode
s User-Programmable Fixed Frequency
Operation
s Under-Voltage Lockout Feature With Power-
Up Reset
s Built-In Soft-Start Feature
s Operates With 3.3V or 5V Power Supplies
s 100mA Output Drive Capability
APPLICATIONS
s Notebooks
s Instrumentation Displays
s Desktop Computer Monitors
s Low Ambient Light Displays (used in
Aircraft, Automobiles, and Hand-held
Equipment)
BENEFITS
s Extemely High Efficiency From 3.3V or 5V
Power Supplies
s Lower Cost Than Conventional Buck / Royer
Inverter Topologies
s Improved Lamp Strike Capability
s Improved Over-Voltage Control
The LX1686 Backlight Controller IC
provides all the control functions needed
to implement Linfinity’s direct drive in-
verters used to operate cold cathode fluo-
rescent 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 appli-
cation in notebook computers, web
browsers, automotive and industrial in-
strumentation, and entertainment sys-
tems.
The LX1686 includes a PWM con-
trolled lamp current burst circuit that
can provide a >100:1 dimming range from
a simple zero to 2.5V potentiometer in-
put.
The PWM dimming burst rate is
easily synchronized to the LCD panel’s
frame rate to prevent interference from
optical beat frequencies.
D IGITAL D IMMING CCFL C ONTROLLER IC
P RELIMINAR Y D ATA S HEET
T HE
I NFINITE
P OWER
OF
I NNOV A TION
LX1686
Safety and reliability features in-
clude a new dual feedback contol loop
that permits regulation of maximum lamp
strike voltage as well as lamp current.
Regulating maximum lamp voltage per-
mits the designer to provide for ample
worst case lamp strike voltage while at
the same time conservatively limit maxi-
mum open circuit voltage.
An innovative new strike voltage
generation technique enables the mod-
ule designer to optimize high voltage
transformer design for maximum oper-
ating efficiency with no power dissipat-
ing overhead to guarantee strike capa-
bility.
Direct drive topology is a non-reso-
nant, oscillator-controlled PWM regu-
lation method. The LX1686 allows a
wide choice of fixed operating frequen-
cies to match lamp current frequency to
the lamp’s most efficient operating point,
and to minimize high frequency interfer-
ence.
Copyright 2000
Rev. 0.4 1/00
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L IN F INITY M ICROELECTRONICS I NC .
PRODUCT HIGHLIGHT
RANGEMAX VS. ANALOG DIMMING
RangeMAXTM
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.
Light Output (Nits)
Power
Used
(Watts)
2
0
30
45
60
75
90
105
5
4
3
1
Standard Analog
Dimming Inverter
LinFinity's
RangeMAX
0 to 85
LX1686CPW
PA CKAGE O RDER INFO
T
A (°C)
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX1686CPWT)
PW Plastic TSSOP
24-pin
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX1686CPWT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ballast/Backlight Controller/Driver |
| LX1686CPW-TR | 制造商:Microsemi Corporation 功能描述:CCFL Controller 3.3V/5V 24-Pin TSSOP T/R |
| 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 標準包裝: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 |
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