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首页 > Products > Led Driver > LED Driver Chip > Disjunctor Dimming and Toning >Cxle8422 is a dual winding primary side feedback led constant current driver chip with three section switch dimming function. The chip works in the discontinuous mode of inductive current
Cxle8422 is a dual winding primary side feedback led constant current driver chip with three section switch dimming function. The chip works in the discontinuous mode of inductive current

Cxle8422 integrates three section switch dimming function. The output current of LED can be switched between 100%, 50% and 10% through the switch action of common switch. Cxle8422's dimming mode is simple and convenient. It only needs ordinary switches without additional dimmers.
The cxle8422 adopts the source drive mode and the special transformer dual winding control technology, and the constant current output of the LED can be realized without using the auxiliary winding of the transformer to feed back the output current of the LED. At the same time, the working current of cxle8422 is very low, so no transformer auxiliary winding is needed to supply power to the chip.
The cxle8422 is integrated with 650V power tube, which can achieve high-precision LED constant current output with few peripheral components, greatly simplifying the design of LED lighting system.

Cxle8422 is a dual winding primary side feedback led constant current driver chip with three section switch dimming function. The chip works in the discontinuous mode of inductive current
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目录SqT嘉泰姆

1.产品概述       2.产品特点     3.应用范围      4.技术规格书下载(产品PDF文档) SqT嘉泰姆
5.产品封装图   6.电路原理图  7.功能概述      8.相关产品
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一,产品概述(General Description)      SqT嘉泰姆


   CXLE8422是一款具有三段式开关调光功能的双绕组原边反馈LED恒流驱动芯片。芯片工作在电感电流断续模式,特别适合于85VAC~265VAC全电压输入范围的小功率隔离式LED调光电源应用。SqT嘉泰姆
     CXLE8422集成了三段式开关调光功能。LED输出电流可以通过普通开关的开关动作在100%、50%和10%之间进行切换。CXLE8422的调光方式简单方便,只需要普通的开关而不需要额外的调光器。SqT嘉泰姆
     CXLE8422采用源极驱动方式和专有的变压器双绕组控制技术,无需利用变压器的辅助绕组来反馈LED的输出电流就可以实现LED恒流输出。同时CXLE8422的工作电流很低,无需变压器辅助绕组来给芯片进行供电。 SqT嘉泰姆
     CXLE8422 内部集成了 650V 功率管,只需要很少的外围元件即可实现高精度的 LED 恒流输出,显著地简化了 LED 照明系统的设计。SqT嘉泰姆
    CXLE8422工作电压范围宽,适用于85VAC~265VAC全电压范围的交流输入。同时CXLE8422集成了多种保护功能,以保证系统的稳定和可靠。包括VCC供电欠压保护,LED开路保护,LED短路保护和芯片过温保护等。SqT嘉泰姆
二.产品特点(Features)
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集成三段式开关调光功能SqT嘉泰姆
100%,50%,10%调光亮度SqT嘉泰姆
内部集成 650V 功率管SqT嘉泰姆
原边反馈模式,不需要次级反馈电路SqT嘉泰姆
变压器双绕组控制技术SqT嘉泰姆
工作电流低,不需辅助绕组供电SqT嘉泰姆
宽输入电压范围SqT嘉泰姆
±5% LED 输出电流精度SqT嘉泰姆
VCC 电源钳位功能SqT嘉泰姆
LED 开路保护SqT嘉泰姆
LED 短路保护SqT嘉泰姆
芯片供电欠压保护SqT嘉泰姆
芯片过温保护SqT嘉泰姆
自动重启动功能SqT嘉泰姆
系统体积小,BOM 成本低SqT嘉泰姆
采用 SOP8L 封装SqT嘉泰姆
三,应用范围 (Applications)
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GU10 LED 射灯SqT嘉泰姆
E17/E27 LED 蜡烛灯SqT嘉泰姆
LED 球泡灯SqT嘉泰姆
其它 LED 照明SqT嘉泰姆
四.技术规格书下载(产品PDF)
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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!SqT嘉泰姆

 QQ截图20160419174301.jpgSqT嘉泰姆

五,产品封装图 (Package)SqT嘉泰姆


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管脚编号SqT嘉泰姆

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描述SqT嘉泰姆

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开关调光电路电源引脚,连接电容到地SqT嘉泰姆

2SqT嘉泰姆

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芯片地SqT嘉泰姆

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内部高压功率管漏极SqT嘉泰姆

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变压器初级绕组峰值电流检测端,连接电阻到地SqT嘉泰姆

六.电路原理图SqT嘉泰姆


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七,功能概述
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参数SqT嘉泰姆

额定值SqT嘉泰姆

单位SqT嘉泰姆

VCC 到 GND 电压SqT嘉泰姆

-0.3~+20SqT嘉泰姆

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DRN 到 GND 电压SqT嘉泰姆

-0.3~+650SqT嘉泰姆

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CS,DIM,VHD 到 GND 电压SqT嘉泰姆

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-50~+150SqT嘉泰姆

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工作结温范围SqT嘉泰姆

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八,相关芯片选择指南SqT嘉泰姆

LED驱动芯片>隔离不带PFCSqT嘉泰姆

产品名称SqT嘉泰姆

功率管SqT嘉泰姆

调光方式SqT嘉泰姆

封装SqT嘉泰姆

典型应用SqT嘉泰姆

最大功率SqT嘉泰姆

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CXLE8419SqT嘉泰姆

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LED日光灯SqT嘉泰姆

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CXLE8421SqT嘉泰姆

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LED吸顶灯SqT嘉泰姆

CXLE8422SqT嘉泰姆

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CXLE8425SqT嘉泰姆

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GU10射灯SqT嘉泰姆