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首页 > Products > Led Driver > Isolated LED Driver > Isolated No PFC >Cxle8424 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
Cxle8424 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 cxle8424 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 cxle8424 is very low, so no transformer auxiliary winding is needed to supply power to the chip.
The cxle8424 works in the original side feedback mode, and the high-precision LED constant current output can be realized through the information of the original side feedback, without the need of optocoupler, secondary feedback circuit and any compensation circuit. In addition, the cxle8424 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.

Cxle8424 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gwE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) gwE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)      gwE嘉泰姆


   CXLE8424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gwE嘉泰姆
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。gwE嘉泰姆
     CXLE8424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gwE嘉泰姆
反馈LED的输出电流就可以实现LED恒流输出。同时CXLE8424的工作电流很低,无需变压器辅gwE嘉泰姆
助绕组来给芯片进行供电。gwE嘉泰姆
    CXLE8424 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,gwE嘉泰姆
并不需要光耦、次级反馈电路和任何补偿电路。此外,CXLE8424 内部集成了 650V 功率管,这gwE嘉泰姆
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。gwE嘉泰姆
    CXLE8424工作电压范围宽,适用于85VAC~265VAC全电压范围的交流输入。同时CXLE8424gwE嘉泰姆
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,LEDgwE嘉泰姆
短路保护和芯片过温保护等。gwE嘉泰姆
二.产品特点(Features)
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内部集成 650V 功率管gwE嘉泰姆
原边反馈模式,不需要次级反馈电路gwE嘉泰姆
变压器双绕组控制技术gwE嘉泰姆
工作电流低,不需辅助绕组供电gwE嘉泰姆
宽输入电压范围gwE嘉泰姆
±5% LED 输出电流精度gwE嘉泰姆
VCC 电源钳位功能gwE嘉泰姆
LED 开路保护gwE嘉泰姆
LED 短路保护gwE嘉泰姆
芯片供电欠压保护gwE嘉泰姆
芯片过温保护gwE嘉泰姆
自动重启动功能gwE嘉泰姆
系统体积小,BOM 成本低gwE嘉泰姆
采用 SOP8L 封装gwE嘉泰姆
三,应用范围 (Applications)
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GU10 LED 射灯gwE嘉泰姆
E17/E27 LED 蜡烛灯gwE嘉泰姆
LED 球泡灯gwE嘉泰姆
其它 LED 照明gwE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!gwE嘉泰姆

 QQ截图20160419174301.jpggwE嘉泰姆

五,产品封装图 (Package)gwE嘉泰姆


image.pnggwE嘉泰姆

管脚编号gwE嘉泰姆

管脚名称gwE嘉泰姆

描述gwE嘉泰姆

1gwE嘉泰姆

CSgwE嘉泰姆

变压器初级绕组峰值电流检测端,连接电阻到地gwE嘉泰姆

2gwE嘉泰姆

GNDgwE嘉泰姆

芯片地gwE嘉泰姆

3gwE嘉泰姆

VCCgwE嘉泰姆

芯片电源引脚gwE嘉泰姆

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SWgwE嘉泰姆

内部高压功率管源极gwE嘉泰姆

5, 6gwE嘉泰姆

DRNgwE嘉泰姆

内部高压功率管漏极gwE嘉泰姆

7, 8gwE嘉泰姆

NCgwE嘉泰姆

无连接gwE嘉泰姆

六.电路原理图gwE嘉泰姆


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七,功能概述gwE嘉泰姆


参数gwE嘉泰姆

额定值gwE嘉泰姆

单位gwE嘉泰姆

VCC, SW 到 GND 电压gwE嘉泰姆

-0.3~+20gwE嘉泰姆

VgwE嘉泰姆

DRN 到 GND 电压gwE嘉泰姆

-0.3~+650gwE嘉泰姆

VgwE嘉泰姆

CS 到 GND 电压gwE嘉泰姆

-0.3~+6gwE嘉泰姆

VgwE嘉泰姆

VCC 引脚电源电流gwE嘉泰姆

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功率损耗gwE嘉泰姆

0.6gwE嘉泰姆

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储存环境温度gwE嘉泰姆

-50~+150gwE嘉泰姆

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工作结温范围gwE嘉泰姆

-40~150gwE嘉泰姆

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ESD 水平(HBM)gwE嘉泰姆

2000gwE嘉泰姆

VgwE嘉泰姆

ESD 水平(MM)gwE嘉泰姆

200gwE嘉泰姆

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八,相关芯片选择指南gwE嘉泰姆


LED驱动芯片>隔离不带PFCgwE嘉泰姆

产品名称gwE嘉泰姆

功率管gwE嘉泰姆

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封装gwE嘉泰姆

典型应用gwE嘉泰姆

最大功率gwE嘉泰姆

应用领域gwE嘉泰姆

CXLE8419gwE嘉泰姆

外置gwE嘉泰姆

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5~36WgwE嘉泰姆

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CXLE8420gwE嘉泰姆

650V/4ΩgwE嘉泰姆

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36V/300mAgwE嘉泰姆

12WgwE嘉泰姆

LED日光灯gwE嘉泰姆

CXLE8421gwE嘉泰姆

外置gwE嘉泰姆

不支持gwE嘉泰姆

SOT23-6gwE嘉泰姆

5~36WgwE嘉泰姆

40WgwE嘉泰姆

LED吸顶灯gwE嘉泰姆

CXLE8422gwE嘉泰姆

650V/10ΩgwE嘉泰姆

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650V/10ΩgwE嘉泰姆

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