CXLE82118电流模式DC/DC转换器2.5A 40V开关降压升压和降压升压模式驱动LED电流模式脉宽调制开关频率为500KHz软启动以避免浪涌电流120mV感测电阻器进行外部编程

CXLE82118是一个电流模式DC/DC转换器，内部有一个2.5A、40V开关，专门设计用于驱动LED。CXLE82118在降压、升压和降压升压模式下作为LED驱动器工作。LED电流可通过一个120mV感测电阻器进行外部编程。在500KHz的工作频率下，外部电感和输入/输出电容都可以很小。调光可以是模拟调光、PWM调光或用外部电容器将其转换为模拟调光
高压：车辆识别号高达36伏，输出电压高达36伏
·2.5A开关电流
“降压、升压或降压操作
·电流模式脉宽调制，开关频率为500KHz
·易于调光：使用一个外部电容器将模拟、脉冲宽度调制或脉冲宽度调制转换为模拟
·软启动以避免浪涌电流
·可编程过电压保护，以限制输出电压
·车辆识别号欠压锁定和热关机

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 CXLE82118 is a current mode DC/DC converter with an internal 2.5A, 40V switch specifically designed to drive LEDs. The CXLE82118 operates as a LED driver in buck, boost and buck-boost mode. The LED current is externally programmable with a 120mV sense resistor. With a 500KHz operating frequency, the external inductor and input/output capacitors can all be small. Dimming can be either analog, PWM, or PWM converting to analog with an external capacitor. The CXLE82118 is available in TDFN-12L 3x3 and MSOP-10 (FD) package.

   产品特点 返回TOP

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„ High Voltage : VIN up to 36V, VOUT up to 36V 

„ 2.5A Switch Current 

„ Buck, Boost or Buck-Boost Operation 

„ Current Mode PWM with 500KHz Switching Frequency 

 „ Easy dimming : Analog, PWM or PWM Converting to Analog with One External Capacitor 

„ Soft Start to Avoid Inrush Current 

„ Programmable Over Voltage Protection to Limit Output Voltage 

„ VIN Under Voltage Lockout and Thermal Shutdown 

 „ 12-Lead TDFN and MSOP-10 (FD) Package

   应用范围 返回TOP

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„ GPS, Portable DVD Backlight 

„ Desk Light and Room Lighting 

„ Industrial Display Backlight

   技术规格书（产品PDF) 返回TOP 

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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！

 

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