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
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[ CXLE82118 ]"
目录
7.相关产品
产品概述 返回TOP
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
„ 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
„ 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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产品封装图 返回TOP
电路原理图 返回TOP
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Lighting Driver |
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|
Part NO. |
Vin(V) min. |
Vin(V) max. |
FSW (kHz) |
Dimmi- mg(kHz) |
Vsen- se(mV |
RON (Ohm) |
Internal MOSFET |
Note |
Package |
|
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) |
|
|
7 |
36 |
420 |
0.1~1 |
100 |
-- |
N |
Digital/Analog Dimming Control, OTP, Open LED Protection |
MSOP-8(FD) SOT-23-5 |
|
|
7 |
36 |
Choke setting |
0.1~1 |
100 |
0.5 |
Y |
Digital/Analog Dimming Control,OTP, Open/Shorted LED Protection |
SOT-23-5 |
|
|
7 |
36 |
Choke setting |
0.1~1 |
100 |
0.5 |
Y |
Digital/AnalogDimming Control,OTP, Open/Shorted LED Protection |
SOT-23-5 |
|
|
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 |
|
|
7.2 |
12 |
Off time setting |
-- |
239 |
-- |
N |
AC Input Range(80VAC–277VAC),Offline LED Lamps,UVLO, OTP, OCP |
SOP-8 |
|
|
2 |
5.5 |
-- |
-- |
ADJ |
-- |
N |
DimmableLinear LED controller with High PF |
SOT-23-5 |
|
