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首页 > Products > Led Driver > Isolated LED Driver > Isolated No PFC >Cxle8425 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,
Cxle8425 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 cxle8425 adopts the source drive mode and the special transformer double winding control technology. It can realize the constant current output of the LED 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 cxle8425 is very low, so no transformer auxiliary winding is needed to supply power to the chip.
The cxle8425 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 the need of optocoupler, secondary feedback circuit and any compensation circuit. In addition, the cxle8425 is internally integrated with 650V power tube, which can achieve high-precision LED constant current output with only a few peripheral components, significantly simplifying the design of LED lighting system.
The cxle8425 has a wide working voltage range and is suitable for AC input in the full voltage range of 85vac ~ 265vac. At the same time, the cxle8425 integrates multiple protection functions to ensure the stability and reliability of the system. Including VCC power supply under voltage protection, led open circuit protection, led short circuit protection and chip over temperature protection.

Cxle8425 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DFh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) DFh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)      DFh嘉泰姆


   CXLE8425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DFh嘉泰姆
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。DFh嘉泰姆
     CXLE8425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DFh嘉泰姆
LED的输出电流就可以实现LED恒流输出。同时CXLE8425的工作电流很低,无需变压器辅助绕组来DFh嘉泰姆
给芯片进行供电。DFh嘉泰姆
      CXLE8425 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DFh嘉泰姆
不需要光耦、次级反馈电路和任何补偿电路。此外,CXLE8425 内部集成了 650V 功率管,这样只需DFh嘉泰姆
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。DFh嘉泰姆
     CXLE8425工作电压范围宽,适用于85VAC~265VAC全电压范围的交流输入。同时CXLE8425集成DFh嘉泰姆
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DFh嘉泰姆
和芯片过温保护等。DFh嘉泰姆
二.产品特点(Features)
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内部集成 650V 功率管DFh嘉泰姆
原边反馈模式,不需要次级反馈电路DFh嘉泰姆
变压器双绕组控制技术DFh嘉泰姆
工作电流低,不需辅助绕组供电DFh嘉泰姆
宽输入电压范围DFh嘉泰姆
±5% LED 输出电流精度DFh嘉泰姆
VCC 电源钳位功能DFh嘉泰姆
LED 开路保护DFh嘉泰姆
LED 短路保护DFh嘉泰姆
芯片供电欠压保护DFh嘉泰姆
芯片过温保护DFh嘉泰姆
自动重启动功能DFh嘉泰姆
系统体积小,BOM 成本低DFh嘉泰姆
采用 SOP8L 封装DFh嘉泰姆
三,应用范围 (Applications)
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GU10 LED 射灯DFh嘉泰姆
E17/E27 LED 蜡烛灯DFh嘉泰姆
LED 球泡灯DFh嘉泰姆
其它 LED 照明DFh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!DFh嘉泰姆

 QQ截图20160419174301.jpgDFh嘉泰姆

五,产品封装图 (Package)DFh嘉泰姆


image.pngDFh嘉泰姆

 DFh嘉泰姆

管脚编号DFh嘉泰姆

管脚名称DFh嘉泰姆

描述DFh嘉泰姆

1DFh嘉泰姆

CSDFh嘉泰姆

变压器初级绕组峰值电流检测端,连接电阻到地DFh嘉泰姆

2DFh嘉泰姆

GNDDFh嘉泰姆

芯片地DFh嘉泰姆

3DFh嘉泰姆

VCCDFh嘉泰姆

芯片电源引脚DFh嘉泰姆

4DFh嘉泰姆

SWDFh嘉泰姆

内部高压功率管源极DFh嘉泰姆

5, 6DFh嘉泰姆

DRNDFh嘉泰姆

内部高压功率管漏极DFh嘉泰姆

7, 8DFh嘉泰姆

NCDFh嘉泰姆

无连接DFh嘉泰姆

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六.电路原理图DFh嘉泰姆


image.pngDFh嘉泰姆

七,功能概述DFh嘉泰姆


参数DFh嘉泰姆

额定值DFh嘉泰姆

单位DFh嘉泰姆

VCC, SW 到 GND 电压DFh嘉泰姆

-0.3~+20DFh嘉泰姆

VDFh嘉泰姆

DRN 到 GND 电压DFh嘉泰姆

-0.3~+650DFh嘉泰姆

VDFh嘉泰姆

CS 到 GND 电压DFh嘉泰姆

-0.3~+6DFh嘉泰姆

VDFh嘉泰姆

VCC 引脚电源电流DFh嘉泰姆

5DFh嘉泰姆

mADFh嘉泰姆

功率损耗DFh嘉泰姆

0.6DFh嘉泰姆

WDFh嘉泰姆

储存环境温度DFh嘉泰姆

-50~+150DFh嘉泰姆

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工作结温范围DFh嘉泰姆

-40~+150DFh嘉泰姆

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ESD 水平(HBM)DFh嘉泰姆

2000DFh嘉泰姆

VDFh嘉泰姆

ESD 水平(MM)DFh嘉泰姆

200DFh嘉泰姆

VDFh嘉泰姆

八,相关芯片选择指南DFh嘉泰姆


LED驱动芯片>隔离不带PFCDFh嘉泰姆

产品名称DFh嘉泰姆

功率管DFh嘉泰姆

调光方式DFh嘉泰姆

封装DFh嘉泰姆

典型应用DFh嘉泰姆

最大功率DFh嘉泰姆

应用领域DFh嘉泰姆

CXLE8419DFh嘉泰姆

外置DFh嘉泰姆

三段开关DFh嘉泰姆

SOP8DFh嘉泰姆

5~36WDFh嘉泰姆

40WDFh嘉泰姆

LED日光灯DFh嘉泰姆

CXLE8420DFh嘉泰姆

650V/4ΩDFh嘉泰姆

不支持DFh嘉泰姆

SOP8DFh嘉泰姆

36V/300mADFh嘉泰姆

12WDFh嘉泰姆

LED日光灯DFh嘉泰姆

CXLE8421DFh嘉泰姆

外置DFh嘉泰姆

不支持DFh嘉泰姆

SOT23-6DFh嘉泰姆

5~36WDFh嘉泰姆

40WDFh嘉泰姆

LED吸顶灯DFh嘉泰姆

CXLE8422DFh嘉泰姆

650V/10ΩDFh嘉泰姆

三段开关DFh嘉泰姆

SOP8DFh嘉泰姆

23V/300mADFh嘉泰姆

7WDFh嘉泰姆

LED筒灯DFh嘉泰姆

CXLE8423DFh嘉泰姆

650V/10ΩDFh嘉泰姆

不支持DFh嘉泰姆

SOP8DFh嘉泰姆

23V/300mADFh嘉泰姆

7WDFh嘉泰姆

LED球泡灯DFh嘉泰姆

CXLE8424DFh嘉泰姆

650V/17ΩDFh嘉泰姆

不支持DFh嘉泰姆

SOP8DFh嘉泰姆

16V/300mADFh嘉泰姆

5WDFh嘉泰姆

LED蜡烛灯DFh嘉泰姆

CXLE8425DFh嘉泰姆

650V/23ΩDFh嘉泰姆

不支持DFh嘉泰姆

SOP8DFh嘉泰姆

10V/300mADFh嘉泰姆

3WDFh嘉泰姆

GU10射灯DFh嘉泰姆