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首页 > Products > Led Driver > LED Driver Chip > Disjunctor Dimming and Toning >Cxle8678 is a high power factor linear constant current LED driver chip with switch dimming function, which is applied in the field of LED lighting with mains input.
Cxle8678 is a high power factor linear constant current LED driver chip with switch dimming function, which is applied in the field of LED lighting with mains input.

Cxle8678 is a high power factor linear constant current LED driver chip with switch dimming function, which is applied in the field of LED lighting with mains input.
In the first power on, the output current is 100% of the normal setting current; in the second power on, the output current is 50% of the normal setting current; in the third power on, the output current is 50% of the normal setting current
At the second power on, the output current is 20% of the normal setting current, and at the fourth power on, a new cycle will start again, that is, the output current is set to normal again
100% of the constant current, cycling in turn. Internal chip integrated with high voltage start circuit and high voltage power MOS tube, with the maximum withstand voltage of 700V, which can be directly connected and integrated
The application circuit of 110V or 220V AC mains power after the current flow is very simple, without electrolytic capacitor and inductance, and the system has no EMI problem during operation
It has the characteristics of high power factor and low harmonic distortion. The chip uses the special linear constant current control technology, which makes the current precision between chips less than 5%.

Cxle8678 is a high power factor linear constant current LED driver chip with switch dimming function, which is applied in the field of LED lighting with mains input.
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目录0PZ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) 0PZ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)      0PZ嘉泰姆


   CXLE8678 是一款带开关调光功能的高功率因数线性恒流LED 驱动芯片,应用于市电输入的 LED 照明领域。0PZ嘉泰姆
第一次上电时,输出电流为正常设定电流的 100%,第二次上电时,输出电流为正常设定电流的 50%,第三0PZ嘉泰姆
次上电时,输出电流为正常设定电流的 20%,第四次上电时又会重新开始新的循环,即输出电流又为正常设0PZ嘉泰姆
定电流的 100%,依次循环。内芯片集成高压启动电路以及高压功率 MOS 管,最高耐压达 700V,可以直接接整0PZ嘉泰姆
流之后的 110V 或 220V 交流市电,应用电路非常简单,无需电解电容和电感,系统工作时没有EMI 的问题,且具0PZ嘉泰姆
有高功率因数和低谐波失真的特点。芯片使用专有的线性恒流控制技术,使得芯片之间的电流精度控制在 5%以内。0PZ嘉泰姆
芯片具有 LED 开路保护、LED 短路保护以及温度补偿功能,使得应用时系统具有最大程度的安全性。0PZ嘉泰姆
二.产品特点(Features)
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具有开关调光功能0PZ嘉泰姆
集成 700V 高压启动电路以及高压功率 MOS0PZ嘉泰姆
无需电解电容以及电感0PZ嘉泰姆
没有 EMI 问题0PZ嘉泰姆
功率因数:>0.950PZ嘉泰姆
效率:>0.850PZ嘉泰姆
具有 LED 开路以及 LED 短路保护0PZ嘉泰姆
120℃高温时输出电流减小0PZ嘉泰姆
最高输出平均电流 40mA0PZ嘉泰姆
单颗最大输出功率 10W0PZ嘉泰姆
封装形式:ESOP80PZ嘉泰姆
三,应用范围 (Applications)
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LED 日光灯管0PZ嘉泰姆
LED 球泡灯0PZ嘉泰姆
LED 吸顶灯0PZ嘉泰姆
LED 面板灯0PZ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!0PZ嘉泰姆

 QQ截图20160419174301.jpg0PZ嘉泰姆

五,产品封装图 (Package)0PZ嘉泰姆


 0PZ嘉泰姆

image.png0PZ嘉泰姆

管脚号0PZ嘉泰姆

管脚名称0PZ嘉泰姆

描述0PZ嘉泰姆

10PZ嘉泰姆

VIN0PZ嘉泰姆

电源输入端0PZ嘉泰姆

20PZ嘉泰姆

CH10PZ嘉泰姆

输出通道 10PZ嘉泰姆

30PZ嘉泰姆

CH20PZ嘉泰姆

输出通道 20PZ嘉泰姆

40PZ嘉泰姆

CH30PZ嘉泰姆

输出通道 30PZ嘉泰姆

50PZ嘉泰姆

ISET0PZ嘉泰姆

输出电流设置端,外接电阻到 GND0PZ嘉泰姆

60PZ嘉泰姆

HOLD0PZ嘉泰姆

断电后维持时间设定端,外接电容到 GND0PZ嘉泰姆

70PZ嘉泰姆

GND0PZ嘉泰姆

芯片地0PZ嘉泰姆

80PZ嘉泰姆

DIM0PZ嘉泰姆

调光信号检测脚,接受 VIN 断电信号0PZ嘉泰姆

Exposed0PZ嘉泰姆
PAD
0PZ嘉泰姆

-0PZ嘉泰姆

散热底座,为降低芯片温度,散热片须与 PCB 有良好焊接0PZ嘉泰姆

六.电路原理图0PZ嘉泰姆


image.png0PZ嘉泰姆

七,功能概述0PZ嘉泰姆


参数0PZ嘉泰姆

额定值0PZ嘉泰姆

单位0PZ嘉泰姆

VIN、CH1、CH2、CH3 电压0PZ嘉泰姆

-0.3~+7000PZ嘉泰姆

V0PZ嘉泰姆

ISET、HOLD、DIM 电压0PZ嘉泰姆

-0.3~+60PZ嘉泰姆

V0PZ嘉泰姆

最大输出电流0PZ嘉泰姆

500PZ嘉泰姆

mA0PZ嘉泰姆

最大输出功率0PZ嘉泰姆

100PZ嘉泰姆

W0PZ嘉泰姆

储存环境温度0PZ嘉泰姆

-50~+1500PZ嘉泰姆

0PZ嘉泰姆

工作环境温度0PZ嘉泰姆

-40~+850PZ嘉泰姆

0PZ嘉泰姆

工作结温范围0PZ嘉泰姆

-40~1500PZ嘉泰姆

0PZ嘉泰姆

HBM0PZ嘉泰姆

20000PZ嘉泰姆

V0PZ嘉泰姆

MM0PZ嘉泰姆

2000PZ嘉泰姆

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八,相关芯片选择指南0PZ嘉泰姆


LED驱动芯片>超高压线性0PZ嘉泰姆

产品名称0PZ嘉泰姆

功率管0PZ嘉泰姆

调光方式0PZ嘉泰姆

封装0PZ嘉泰姆

典型应用0PZ嘉泰姆

最大功率0PZ嘉泰姆

应用领域0PZ嘉泰姆

CXLE86780PZ嘉泰姆

700V0PZ嘉泰姆

三段开关0PZ嘉泰姆

ESOP80PZ嘉泰姆

255V/45mA0PZ嘉泰姆

10W0PZ嘉泰姆

LED日光灯0PZ嘉泰姆

CXLE86790PZ嘉泰姆

700V0PZ嘉泰姆

三段开关0PZ嘉泰姆

ESOP80PZ嘉泰姆

255V/45mA0PZ嘉泰姆

12W0PZ嘉泰姆

LED吸顶灯0PZ嘉泰姆

CXLE86800PZ嘉泰姆

700V0PZ嘉泰姆

不支持0PZ嘉泰姆

SOT89-5/TO252-50PZ嘉泰姆

255V/45mA0PZ嘉泰姆

15W0PZ嘉泰姆

LED筒灯0PZ嘉泰姆

CXLE86810PZ嘉泰姆

700V0PZ嘉泰姆

不支持0PZ嘉泰姆

SOT89-3/TO252-30PZ嘉泰姆

280V/36mA0PZ嘉泰姆

18W0PZ嘉泰姆

LED球泡灯0PZ嘉泰姆