CXLE82122可调光LED灯具恒定关断时间AC/DC降压控制器PWM调光方案LED的亮度进行调制可编程关闭时间允许恒定纹波电流无可见闪烁无源PFC电路

CXLE82122是一种适用于可调光LED灯具的自适应恒定关断时间AC/DC降压控制器，其设计与triac调光器兼容。CXLE82122提供用于照明大功率led的恒定电流，并且包括triac dim解码器。采用PWM调光方案对LED的亮度进行调制。CXLE82122包括一个泄放电路，在线路电压较低时允许电流流动，以确保triac正常工作，从而使triac正常启动。无源PFC电路通过在大部分周期内直接从线路中吸取电流来确保良好的功率因数，并为buck调节器提供恒定的正电压。附加功能包括热关机、电流限制和输入电源欠压锁定。
用于LED调光的Triac调光解码电路
应用电压范围80VAC–277VAC
能够控制LED电流大于1A
低静态电
可编程关闭时间允许恒定纹波电流
输入电源欠压锁定
热关断
过电流保护
无可见闪烁

目录

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）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXLE82122 is an adaptive constant off-time AC/DC buck controller for dimmable LED luminaries designed to be compatible with triac dimmers. The CXLE82122 provides a constant current for illuminating high power LEDs and includes a triac dim decoder. The LED brightness is modulated by the scheme of PWM-dimming. The CXLE82122 includes a bleeder circuit to ensure proper triac operation by allowing current flow while the line voltage is low to enable proper firing of the triac. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and input supply under-voltage lockout.

   产品特点 返回TOP

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Triac dim decoder circuit for LED dimming 

Application voltage range 80VAC – 277VAC 

Capable of controlling LED currents greater than 1A 

Low quiescent current 

Programmable off-time allows for constant ripple current 

Input supply under-voltage lockout 

Thermal shutdown 

Over current protection 

No visible flicker 

MSOP-8 package

   应用范围 返回TOP

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Retro Fit Lamps 

Solid State Lighting 

LED modules such as LED spots, down-lights 

LED strings suitable for retail displays, etc.

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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Lighting Driver
Part   NO.	Vin(V) min.	Vin(V) max.	FSW (kHz)	Dimmi- mg(kHz)	Vsen- se(mV	RON (Ohm)	Internal  MOSFET	Note	Package
CXLE82118	6.5	36	500	--	120	0.3	Y	Digital/Analog Dimming Control,OTP, SS, MultiTopology LED Driver, UVP, OCP, OVP	TDFN3X3-12 MSOP-10(FD)
CXLE82119	7	36	420	0.1~1	100	--	N	Digital/Analog   Dimming Control,  OTP, Open LED Protection	MSOP-8(FD) SOT-23-5
CXLE82120	7	36	Choke setting	0.1~1	100	0.5	Y	Digital/Analog Dimming Control,OTP, Open/Shorted LED Protection	SOT-23-5
CXLE82121	7	36	Choke setting	0.1~1	100	0.5	Y	Digital/AnalogDimming Control,OTP, Open/Shorted LED Protection	SOT-23-5
CXLE82122	7.2	12	Offtime  setting	--	300	--	N	AC Input Range(80VAC–277VAC),PFC,Triac Dimmable Offline LED Driver,UVP,OTP,OCP	MSOP-8/ MSOP-10
CXLE82123	7.2	12	Off time setting	--	239	--	N	AC Input Range(80VAC–277VAC),Offline LED Lamps,UVLO, OTP, OCP	SOP-8
CXLE82124	2	5.5	--	--	ADJ	--	N	DimmableLinear LED controller with High PF	SOT-23-5