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首页 > Products > Led Driver > LED Driver Chip > High PF No Strobe >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CH5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) CH5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)      CH5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。CH5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CH5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CH5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CH5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CH5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。CH5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。CH5嘉泰姆
二.产品特点(Features)
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具有开关调光功能CH5嘉泰姆
集成 700V 高压启动电路以及高压功率 MOSCH5嘉泰姆
无需电解电容以及电感CH5嘉泰姆
没有 EMI 问题CH5嘉泰姆
功率因数:>0.95CH5嘉泰姆
效率:>0.85CH5嘉泰姆
具有 LED 开路以及 LED 短路保护CH5嘉泰姆
120℃高温时输出电流减小CH5嘉泰姆
最高输出平均电流 40mACH5嘉泰姆
单颗最大输出功率 10WCH5嘉泰姆
封装形式:ESOP8CH5嘉泰姆
三,应用范围 (Applications)
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LED 日光灯管CH5嘉泰姆
LED 球泡灯CH5嘉泰姆
LED 吸顶灯CH5嘉泰姆
LED 面板灯CH5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!CH5嘉泰姆

 QQ截图20160419174301.jpgCH5嘉泰姆

五,产品封装图 (Package)CH5嘉泰姆


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image.pngCH5嘉泰姆

管脚号CH5嘉泰姆

管脚名称CH5嘉泰姆

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1CH5嘉泰姆

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断电后维持时间设定端,外接电容到 GNDCH5嘉泰姆

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芯片地CH5嘉泰姆

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调光信号检测脚,接受 VIN 断电信号CH5嘉泰姆

ExposedCH5嘉泰姆
PAD
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-CH5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CH5嘉泰姆

六.电路原理图CH5嘉泰姆


image.pngCH5嘉泰姆

七,功能概述CH5嘉泰姆


参数CH5嘉泰姆

额定值CH5嘉泰姆

单位CH5嘉泰姆

VIN、CH1、CH2、CH3 电压CH5嘉泰姆

-0.3~+700CH5嘉泰姆

VCH5嘉泰姆

ISET、HOLD、DIM 电压CH5嘉泰姆

-0.3~+6CH5嘉泰姆

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50CH5嘉泰姆

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10CH5嘉泰姆

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-50~+150CH5嘉泰姆

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-40~+85CH5嘉泰姆

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-40~150CH5嘉泰姆

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八,相关芯片选择指南CH5嘉泰姆


LED驱动芯片>超高压线性CH5嘉泰姆

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700VCH5嘉泰姆

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