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首页 > Products > Led Driver > Isolated LED Driver > Isolated Products >Cxle8418 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip, which is suitable for flyback isolation LED constant current power supply
Cxle8418 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip, which is suitable for flyback isolation LED constant current power supply

Cxle8418 integrated active power factor correction circuit can achieve high power factor and low total harmonic distortion. Due to the critical continuous mode of inductor current, the power MOS transistor is in the zero current on state, the switching loss can be reduced, and the utilization ratio of transformer is also high.
Cxle8418 works in the original side feedback mode. Without secondary feedback circuit, it can achieve high-precision output constant current control, save the cost and volume of the system, and improve the reliability of the system.
The parameters of cxle8418 line voltage regulation rate and load regulation rate are excellent. At the same time, the line voltage compensation coefficient can be flexibly adjusted by external components.
Cxle8418 has built-in multiple protection functions to enhance the system reliability, including LED open circuit protection, led short circuit protection, chip power supply over-voltage protection, under voltage protection, current sampling resistance open circuit protection and cycle by cycle current limiting

Cxle8418 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip, which is suitable for flyback isolation LED constant current power supply
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目录tiZ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) tiZ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)      tiZ嘉泰姆


   CXLE8418 是一款单级、带有源功率因数校正的高精度原边反馈LED 恒流控制芯片, 适用于tiZ嘉泰姆
85Vac~265Vac全范围输入电压的反激式隔离LED恒流电源。CXLE8418集成有源功率因数校正tiZ嘉泰姆
电路,可以实现很高的功率因数和很低的总谐波失真。由于工作在电感电流临界连续模式, 功率tiZ嘉泰姆
MOS 管处于零电流开通状态,开关损耗得以减小,同时变压器的利用率也较高。tiZ嘉泰姆
   CXLE8418工作于原边反馈模式,无需次级反馈电路,即可实现高精度输出恒流控制,节约了系tiZ嘉泰姆
统成本和体积,提高了系统的可靠性。tiZ嘉泰姆
    CXLE8418线电压调整率和负载调整率参数优异,同时线电压补偿系数还可以通过外部元件灵活tiZ嘉泰姆
调整。tiZ嘉泰姆
    CXLE8418内置多重保护功能来加强系统可靠性,包括LED开路保护、LED短路保护、芯片供电tiZ嘉泰姆
过压保护、欠压保护、电流采样电阻开路保护和逐周期限流等。所有的保护都具有自动重启功能。tiZ嘉泰姆
另外,CXLE8418具有过热调节功能,在驱动电源过热时减小输出电流,以提高系统的可靠性。tiZ嘉泰姆
    CXLE8418采用SOP-8封装。tiZ嘉泰姆
二.产品特点(Features)
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单级、有源功率因数校正,高PF 值,低THDtiZ嘉泰姆
原边反馈恒流控制,无需次级反馈电路tiZ嘉泰姆
±3% LED 输出电流精度tiZ嘉泰姆
优异的线电压调整率和负载调整率tiZ嘉泰姆
电感电流临界连续模式tiZ嘉泰姆
超低启动电流tiZ嘉泰姆
FB 反馈电阻值高,功耗低tiZ嘉泰姆
LED 开路/短路保护tiZ嘉泰姆
电流采样电阻开路保护tiZ嘉泰姆
逐周期原边电流限流tiZ嘉泰姆
芯片供电过压/欠压保护tiZ嘉泰姆
自动重启功能tiZ嘉泰姆
过热调节功能tiZ嘉泰姆
三,应用范围 (Applications)
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LEDtiZ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!tiZ嘉泰姆

 QQ截图20160419174301.jpgtiZ嘉泰姆

五,产品封装图 (Package)tiZ嘉泰姆


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引脚号tiZ嘉泰姆

符号tiZ嘉泰姆

功能tiZ嘉泰姆

1tiZ嘉泰姆

COMPtiZ嘉泰姆

环路补偿点tiZ嘉泰姆

2tiZ嘉泰姆

FBtiZ嘉泰姆

反馈信号采样端tiZ嘉泰姆

3tiZ嘉泰姆

ISENtiZ嘉泰姆

电流采样端,接采样电阻到地tiZ嘉泰姆

4、7tiZ嘉泰姆

NCtiZ嘉泰姆

悬空tiZ嘉泰姆

5tiZ嘉泰姆

GATEtiZ嘉泰姆

接外置功率 MOSFET 栅极tiZ嘉泰姆

6tiZ嘉泰姆

VDDtiZ嘉泰姆

芯片电源tiZ嘉泰姆

8tiZ嘉泰姆

GNDtiZ嘉泰姆

芯片地tiZ嘉泰姆

六.电路原理图tiZ嘉泰姆


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七,功能概述tiZ嘉泰姆


项目tiZ嘉泰姆

符号tiZ嘉泰姆

参数范围tiZ嘉泰姆

单位tiZ嘉泰姆

电源电压tiZ嘉泰姆

VDDtiZ嘉泰姆

-0.3~25tiZ嘉泰姆

VtiZ嘉泰姆

VDD 引脚最大钳位电流tiZ嘉泰姆

ICC_MAXtiZ嘉泰姆

5tiZ嘉泰姆

mAtiZ嘉泰姆

环路补偿点tiZ嘉泰姆

VCOMPtiZ嘉泰姆

-0.3~6tiZ嘉泰姆

VtiZ嘉泰姆

辅助绕组的反馈端tiZ嘉泰姆

VFBtiZ嘉泰姆

-0.3~6tiZ嘉泰姆

VtiZ嘉泰姆

电流采样端tiZ嘉泰姆

VISENtiZ嘉泰姆

-0.3~6tiZ嘉泰姆

VtiZ嘉泰姆

外部功率 MOS 管栅极驱动电压tiZ嘉泰姆

VGATEtiZ嘉泰姆

-0.3~25tiZ嘉泰姆

VtiZ嘉泰姆

功耗(注2)tiZ嘉泰姆

PtottiZ嘉泰姆

0.45tiZ嘉泰姆

WtiZ嘉泰姆

PN 结到环境的热阻tiZ嘉泰姆

Rthj-atiZ嘉泰姆

145tiZ嘉泰姆

℃/WtiZ嘉泰姆

工作结温范围tiZ嘉泰姆

TJtiZ嘉泰姆

-40~150tiZ嘉泰姆

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储存温度范围tiZ嘉泰姆

TSTGtiZ嘉泰姆

-55~150tiZ嘉泰姆

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ESDtiZ嘉泰姆

 

2,000tiZ嘉泰姆

VtiZ嘉泰姆

八,相关芯片选择指南tiZ嘉泰姆


隔离产品tiZ嘉泰姆

产品型号tiZ嘉泰姆

隔离/非隔离tiZ嘉泰姆

内置功率管tiZ嘉泰姆

封装形式tiZ嘉泰姆

功率范围tiZ嘉泰姆

 

CXLE8413tiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,650V/0.8AtiZ嘉泰姆

SOP-8tiZ嘉泰姆

5-7WtiZ嘉泰姆

(SOP-8)_CNtiZ嘉泰姆

CXLE8414tiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,650V/1.2AtiZ嘉泰姆

SOP-8tiZ嘉泰姆

7-9WtiZ嘉泰姆

(SOP-8)_CNtiZ嘉泰姆

CXLE8415AtiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,650/2.0AtiZ嘉泰姆

DIP-7tiZ嘉泰姆

12-18WtiZ嘉泰姆

(DIP-7)_CNtiZ嘉泰姆

CXLE8416tiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,700V/3.0AtiZ嘉泰姆

SOP-8,DIP-7tiZ嘉泰姆

12-18WtiZ嘉泰姆

(SOP-8&DIP-7)_CNtiZ嘉泰姆

CXLE8417tiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,700V/4.0AtiZ嘉泰姆

DIP-7tiZ嘉泰姆

18-24WtiZ嘉泰姆

(DIP-7)_CNtiZ嘉泰姆

CXLE8418tiZ嘉泰姆

YtiZ嘉泰姆

MOSFET,BJTtiZ嘉泰姆

SOP-8tiZ嘉泰姆

UP to 60WtiZ嘉泰姆

(SOP-8)_CNtiZ嘉泰姆