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首页 > Products > Led Driver > LED Driver Chip > Stepless Dimming Chip >Cxle8269 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip with dimming control function, which is suitable for flyback isolation
Cxle8269 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip with dimming control function, which is suitable for flyback isolation

Cxle8269 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip with dimming control function, which is suitable for flyback isolation or non isolation LED constant current power supply with 85vac-265vac full range input voltage. Cxle8269 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. Cxle8269 adopts a special current sampling mechanism, which 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.

Cxle8269 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip with dimming control function, which is suitable for flyback isolation
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                          目录rj9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(PDF文档)rj9嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品rj9嘉泰姆

一.产品概述rj9嘉泰姆


  CXLE8269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,带调光控制功能,适用于85Vac-265Vac 全范围输入电压的反激式隔离 或升降压型非隔离LED恒流电源。CXLE8269 集成有源功率因数校正电路,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 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。 CXLE8269 采用专有的电流采样机制,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,节约了系统成本和体积,提高了系统的可 靠性。 CXLE8269 采用专利的线电压和负载补偿技术,可以达到优异的线电压调整率和负载调整率。线电压补偿系数还可以通过外部元件灵活调整。 CXLE8269 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。另外,CXLE8269 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。CXLE8269 的过热调节温度可以通过外部电阻设定。 rj9嘉泰姆

二.产品特点rj9嘉泰姆


单级、有源功率因数校正,高PF值,低THD  rj9嘉泰姆

原边反馈恒流控制,无需次级反馈电路  rj9嘉泰姆

带调光接口  rj9嘉泰姆

±3%LED输出电流精度  rj9嘉泰姆

优异的线电压调整率和负载调整率  rj9嘉泰姆

电感电流临界连续模式  rj9嘉泰姆

超低(33uA)启动电流  rj9嘉泰姆

FB反馈电阻值高,功耗低  rj9嘉泰姆

LED开路/短路保护  rj9嘉泰姆

电流采样电阻开路保护  rj9嘉泰姆

逐周期原边电流限流  rj9嘉泰姆

芯片供电过压/欠压保护  rj9嘉泰姆

自动重启功能  rj9嘉泰姆

过热调节功能  rj9嘉泰姆

过热调节温度可外部设定  rj9嘉泰姆

采用SOP8封装rj9嘉泰姆

三.应用范围rj9嘉泰姆


GU10/E27 LED球泡灯、射灯  rj9嘉泰姆

LED PAR30、PAR38灯  rj9嘉泰姆

LED日光灯  rj9嘉泰姆

其它LED照明   rj9嘉泰姆

四.技术规格书(产品PDF)rj9嘉泰姆


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!rj9嘉泰姆

 QQ截图20160419174301.jpgrj9嘉泰姆

五.产品封装图rj9嘉泰姆


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六.电路原理图rj9嘉泰姆


blob.png   rj9嘉泰姆

七.相关芯片选择指南      更多同类产品......rj9嘉泰姆


无级调光
Part number Package| PF Topology Pout Max(W) MOS Open Circuit  Dimming
Protection
CXLE8267 SOP8 0.5 BUCK 24 550V/6.5Ω - PWM
CXLE8267G DIP7 0.5 BUCK 40 500V/3Ω External PWM
CXLE8267H DIP7 0.5 BUCK 50   External PWM
CXLE8275   SOP16 0.5 BUCK 70/Chaneel External External PWM
CXLE8268 SOP8 0.9 BUCK <50 External - Analog
CXLE8269 SOP8 0.9 FLYBACK/BUCK-BOOST <50 External - Analog
CXLE8270 SOP8 0.9 BUCK 10 300V/2Ω External PWM
CXLE8271 SOP8 0.9 BUCK 12 300V/1.2Ω External PWM
CXLE8272 SOP8 0.9 BUCK   650V/4.5Ω External  
CXLE8273 SOP8 0.9 BUCK     External  
CXLE8274 SOP8 0.9 BUCK <50 500V/0.5Ω External -