CXLE81100

CXLE81100是一款高效的6通道白色LED驱动器。它是为采用LED阵列作为光源的LCD面板而设计的。一个集成的开关电流模式升压控制器驱动6串并联,每串最多支持10个LED。CXLE81100自动调节LED灯条的电源电压,无需计算不同LED类型的输出。它还集成了一个提供高输出功率的40V n沟道MOSFET。6通道电流驱动器是恒流驱动的理想选择,匹配度小于3%。为了设置最大驱动电流,ISET引脚用于确定参考电流。电流驱动器的每个通道被设置为该参考电流的800倍。可以使用一个PWM管脚在100Hz到25kHz的范围内进行PWM调光。CXLE81100中的模式管脚用于设置调光模式。如果模式引脚设置为浮动,则调光模式处于脉宽调制模式,则当前驱动器的开/关与脉宽调制信号同步。如果模式引脚设置为AGND,则当PWM占空比大于25%时,将PWM和ILED电流设置为PWM占空比乘以ISET电流。如果PWM占空比小于25%,则电流固定在0.25xISET,调光占空比为4xpwm占空比。如果模式设置为VDC,调光模式在纯直流模式下工作,则电流源输出为直流调光,而脉宽调制占空比调节电流的幅度。开路LED串自动禁止通道进入过电压保护。
·宽4.2V至24V输入电源范围
?600KHz固定频率
·40V/2A,0.2Ωn沟道MOSFET
最大可编程LED通道电流30Ma席
·电流精度±3%,电流平衡度±2%
·100Hz~25kHz脉冲宽度调制调光
·脉宽调制到直流调光
输入欠压保护
过电流保护
过电压保护
热保护

CXLE81100宽4.2V至24V输入电压可编程LED通道电流30mA高效的6通道白色LED驱动器开关电流模式升压控制器驱动6串并联每串10个LED脉宽调制到直流调光

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1.产品概述       2.产品特点     Z5L嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Z5L嘉泰姆

5.产品封装       6.电路原理图  Z5L嘉泰姆

7.相关产品Z5L嘉泰姆

   产品概述 返回TOPZ5L嘉泰姆


The CXLE81100 is a high-efficiency 6-channel white LED driver. It is designed for LCD panel that employs an LED array as the lighting source. An integrated switch current mode boost controller drives six strings in parallel and supports up to 10 pieces of LEDs per string. The CXLE81100 automatically regulated supply voltage for the LED light bars without the need to calculate the output for different LED types. It also integrates a 40V n-channel MOSFET that provides high output power. The 6-channel current driver is ideal for constant current driving, and well matched less than 3%. To set the maximum driving current, the ISET pin is used to determine reference current. Each channel of the current drivers is set to 800 times of this reference current. A PWM pin can be used to perform PWM dimming from the range of 100Hz to 25kHz. The MODE pin in CXLE81100 is used to set the dimming mode. If MODE pin set to floating, the dimming mode is in the PWM mode, the current driver ON/OFF is synchronized with the PWM signal. If Mode pin set to AGND, PWM and ILED current is set at PWM duty multiplied by ISET current when PWM duty ≥ 25%. If the PWM duty<25%, the ILED current is fixed at 0.25xISET, and the dimming duty is 4 x PWM duty. If MODE set to VDC, the dimming mode operated in the Pure DC mode, the current-source outputs are DC dimming and the PWM duty cycle modulates the amplitude of the currents. Open LED-string automatically disable the channel from entering over voltage protection.

   产品特点 返回TOPZ5L嘉泰姆


 „ Wide 4.2V to 24V Input Supply Range Z5L嘉泰姆

„ 600KHz Fixed Frequency Z5L嘉泰姆

„ 40V/2A, 0.2Ω n-channel MOSFET Z5L嘉泰姆

„ Maximum Programmable LED Channel Current 30mA Z5L嘉泰姆

„ Current accuracy ±3% and current balance ±2% Z5L嘉泰姆

„ 100Hz~25kHz PWM Dimming Z5L嘉泰姆

„ PWM to DC Dimming Z5L嘉泰姆

„ Protection Z5L嘉泰姆

Š Input Under-Voltage Protection Z5L嘉泰姆

Š Over Current Protection Z5L嘉泰姆

Š Over Voltage Protection Z5L嘉泰姆

Š Thermal Protection Z5L嘉泰姆

„ RoHs Compliant Z5L嘉泰姆

„ TQFN4X4-20 PackageZ5L嘉泰姆

   应用范围 返回TOPZ5L嘉泰姆


„ UMPC and Notebook Computer BacklightZ5L嘉泰姆

   技术规格书(产品PDF) 返回TOP Z5L嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持Z5L嘉泰姆

 QQ截图20160419174301.jpgZ5L嘉泰姆

产品封装图 返回TOPZ5L嘉泰姆


image.pngZ5L嘉泰姆

电路原理图 返回TOPZ5L嘉泰姆


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