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首页 > Products > Led Driver > Isolated LED Driver > Isolated No PFC >Cxle8423 is a high precision flyback LED constant current driver chip with two winding primary side feedback. The chip works in the discontinuous mode of inductive current
Cxle8423 is a high precision flyback LED constant current driver chip with two winding primary side feedback. The chip works in the discontinuous mode of inductive current

The cxle8423 adopts the source drive mode and the special transformer double 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 cxle8423 is very low, so no transformer auxiliary winding is needed to supply power to the chip.
The cxle8423 works in the original side feedback mode, through the information of the original side feedback, it can achieve high-precision LED constant current output, without optocoupler, secondary feedback circuit and any compensation circuit. In addition, the cxle8423 is internally integrated with 650V power tube, so that only a few peripheral components are needed to achieve high-precision LED constant current output, significantly simplifying the design of LED lighting system

Cxle8423 is a high precision flyback LED constant current driver chip with two winding primary side feedback. The chip works in the discontinuous mode of inductive current
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目录5Jp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) 5Jp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
5Jp嘉泰姆

一,产品概述(General Description)      5Jp嘉泰姆


   CXLE8423是一款高精度的双绕组原边反馈的反激型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照明系统应用。5Jp嘉泰姆
      CXLE8423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CXLE8423的工作电流很低,无需变压器辅助绕组来给芯片进行供电。5Jp嘉泰姆
    CXLE8423 工作在原边反馈模式下,通过原边反馈的信息即可以实现高精度的 LED 恒流输出,并不需要光耦、次级反馈电路和任何补偿电路。此外,CXLE8423 内部集成了 650V功率管,这样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。5Jp嘉泰姆
     CXLE8423工作电压范围宽,适用于85VAC~265VAC全电压范围的交流输入。同时CXLE8423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。5Jp嘉泰姆
二.产品特点(Features)
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内部集成 650V 功率管5Jp嘉泰姆
原边反馈模式,不需要次级反馈电路5Jp嘉泰姆
变压器双绕组控制技术5Jp嘉泰姆
工作电流低,不需辅助绕组供电5Jp嘉泰姆
宽输入电压范围5Jp嘉泰姆
±5% LED 输出电流精度5Jp嘉泰姆
VCC 电源钳位功能5Jp嘉泰姆
LED 开路保护5Jp嘉泰姆
LED 短路保护5Jp嘉泰姆
芯片供电欠压保护5Jp嘉泰姆
芯片过温保护5Jp嘉泰姆
自动重启动功能5Jp嘉泰姆
系统体积小,BOM 成本低5Jp嘉泰姆
采用 SOP8L 封装5Jp嘉泰姆
三,应用范围 (Applications)
5Jp嘉泰姆


GU10 LED 射灯5Jp嘉泰姆
E17/E27 LED 蜡烛灯5Jp嘉泰姆
LED 球泡灯5Jp嘉泰姆
其它 LED 照明5Jp嘉泰姆
四.技术规格书下载(产品PDF)
5Jp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!5Jp嘉泰姆

 QQ截图20160419174301.jpg5Jp嘉泰姆

五,产品封装图 (Package)5Jp嘉泰姆


image.png5Jp嘉泰姆

管脚编号5Jp嘉泰姆

管脚名称5Jp嘉泰姆

描述5Jp嘉泰姆

15Jp嘉泰姆

CS5Jp嘉泰姆

变压器初级绕组峰值电流检测端,连接电阻到地5Jp嘉泰姆

25Jp嘉泰姆

GND5Jp嘉泰姆

芯片地5Jp嘉泰姆

35Jp嘉泰姆

VCC5Jp嘉泰姆

芯片电源引脚5Jp嘉泰姆

45Jp嘉泰姆

SW5Jp嘉泰姆

内部高压功率管源极5Jp嘉泰姆

5, 65Jp嘉泰姆

DRN5Jp嘉泰姆

内部高压功率管漏极5Jp嘉泰姆

7, 85Jp嘉泰姆

NC5Jp嘉泰姆

无连接5Jp嘉泰姆

六.电路原理图5Jp嘉泰姆


image.png5Jp嘉泰姆
七,功能概述
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参数5Jp嘉泰姆

额定值5Jp嘉泰姆

单位5Jp嘉泰姆

VCC, SW 到 GND 电压5Jp嘉泰姆

-0.3~+205Jp嘉泰姆

V5Jp嘉泰姆

DRN 到 GND 电压5Jp嘉泰姆

-0.3~+6505Jp嘉泰姆

V5Jp嘉泰姆

CS 到 GND 电压5Jp嘉泰姆

-0.3~+65Jp嘉泰姆

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VCC 引脚电源电流5Jp嘉泰姆

55Jp嘉泰姆

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功率损耗5Jp嘉泰姆

0.65Jp嘉泰姆

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储存环境温度5Jp嘉泰姆

-50~+1505Jp嘉泰姆

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工作结温范围5Jp嘉泰姆

-40~+1505Jp嘉泰姆

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ESD 水平(HBM)5Jp嘉泰姆

20005Jp嘉泰姆

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2005Jp嘉泰姆

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八,相关芯片选择指南5Jp嘉泰姆


LED驱动芯片>隔离不带PFC5Jp嘉泰姆

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功率管5Jp嘉泰姆

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CXLE84195Jp嘉泰姆

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LED日光灯5Jp嘉泰姆

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650V/4Ω5Jp嘉泰姆

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5~36W5Jp嘉泰姆

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