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LX1686IPWT

更新时间： 2024-11-11 18:41:07
品牌 Logo 应用领域
美高森美 - MICROSEMI 信息通信管理光电二极管
页数 文件大小 规格书
8页 156K
描述
Fluorescent Light Controller, 256kHz Switching Freq-Max, BICMOS, PDSO24, PLASTIC, TSSOP-24

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LX1686IPWT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP, TSSOP24,.25针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.74
模拟集成电路 - 其他类型：FLUORESCENT LIGHT CONTROLLER控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：3 V
JESD-30 代码：R-PDSO-G24JESD-609代码：e3
长度：7.8 mm湿度敏感等级：1
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP24,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：3.3/5 V认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：256 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：MATTE TIN
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：4.4 mmBase Number Matches：1

LX1686IPWT 数据手册

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LX1686  
Digital Dimming CCFL Controller IC  
I N T E G R A T E D P R O D U C T S  
PRODUCTION DATA SHEET  
KEY FEATURES  
DESCRIPTION  
The LX1686 Backlight Controller  
Safety and reliability features include  
ƒ RangeMAX™ Wide Range  
Dimming (>100:1)  
ƒ Synchronizable to Display Video  
Frequency  
ƒ High Voltage Feedback Loop  
Directly Controls Maximum Open  
Lamp  
ƒ Micro-Amp Sleep Mode  
ƒ User Programmable Fixed  
Frequency Operation  
ƒ Under-Voltage Lockout Feature  
With Power-Up Reset  
ƒ Built-In Soft-Start Feature  
ƒ Operates With 3.3V or 5V power  
Supplies  
IC provides all the control functions a new dual feedback control loop that  
needed to implement Linfinity’s direct permits regulation of maximum lamp  
drive inverters used to operate cold strike voltage as well as lamp current.  
cathode fluorescent lamps (CCFL’s). Regulating maximum lamp voltage  
This IC can be used to control single or permits the designer to provide for  
multiple-lamp configurations. CCFL’s ample worst case lamp strike voltage  
are used for back or edge lighting of while at the same time conservatively  
liquid crystal flat panel displays limit maximum open circuit voltage.  
(LCD’s) and typically find application  
in notebook computers, web browsers, generation technique enables the nodule  
automotive and industrial designer to optimize high voltage  
instrumentation, and entertainment transformer design for maximum  
An innovative new strike voltage  
systems.  
The LX1686 includes  
operating efficiency with no power  
ƒ 100mA Output Drive Capability  
a
PWM dissipating overhead to guarantee strike  
controlled lamp current burst circuit capability  
that can provide a > 100:1 dimming  
range from a simple zero to 2.5V resonant, oscillator-controlled PWM  
Direct drive topology is a non-  
APPLICATIONS  
ƒ Notebooks  
potentiometer input.  
dimming burst rate is easily  
The PWM regulation method. The LX1686 allows  
wide choice of fixed operating  
ƒ Instrumentation Display  
ƒ Desktop Computer Monitors  
ƒ Low Ambient Light Displays  
(used in Aircraft, Automobiles,  
and Hand-Held Equipment)  
a
synchronized to the LCD panel’s frame frequencies to match lamp current  
rate to prevent interference from frequency to the lamp’s most efficient  
optical beat frequencies.  
operating point, and to minimize high  
frequency interference.  
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com  
BENEFITS  
ƒ Extremely High Efficiency From  
3.3V to 5V Power Supplies  
PRODUCT HIGHLIGHT  
ƒ Lower Cost Than Conventional  
Buck / Royer Inverter Topologies  
ƒ Improved Lamp Strike Capability  
ƒ Improved Over-Voltage Control  
5
Standard Analog  
Dimming Inverter  
4
3
LinFinity's  
RangeMAX  
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.  
2
1
0
0
30  
45  
60  
75  
90  
105  
Light Output (Nits)  
PACKAGE ORDER INFO  
Plastic TSSOP  
TJ (°C)  
PW  
24-PIN  
LX1686CPW  
LX1686IPW  
0 to 85  
-40 to 85  
Note: Available in Tape & Reel.  
Append the letter “T” to the part number. (i.e. LX1686CPWT)  
Copyright 2000  
Rev. 1.0c, 2003-06-20  
Microsemi  
Page 1  
Integrated Products  
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570  
12345678

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