CXAC85182

CXAC85182是一个升压转换器,设计用于驱动多达8个系列的白色LED用于背光应用。CXAC85182采用电流模式,1.2兆赫固定频率结构来调节LED电流,该电流通过外部电流感测电阻器设置。它的低300毫伏反馈电压降低了功率损耗,提高了效率。如果由于开路而出现过电压情况,则OV引脚监测输出电压并关闭转换器。CXAC85182包括欠压锁定、限流和热关机保护,防止输出过载时损坏。
2.5V至5.5V工作输入电压范围
最多可驱动8个系列白色LED
1.2兆赫固定开关频率
脉宽调制调光的宽范围(200Hz至200KHz)
内部1.9A开关电流限制
过电压保护(OVP)
内部软启动功能
电流限制和热关机保护
欠压闭锁

CXAC85182升压转换器驱动多达8个系列的白色LED背光应用电流模式1.2兆赫固定频率调节LED电流1.9A开关电流限制电流限制和热关机保护

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1.产品概述       2.产品特点     z0H嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)z0H嘉泰姆

5.产品封装       6.电路原理图  z0H嘉泰姆

7.相关产品z0H嘉泰姆

   产品概述 返回TOPz0H嘉泰姆


The CXAC85182 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application. The CXAC85182 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The CXAC85182 includes under-voltage lockout, current limiting and thermal shutdown protection preventing damage in the event of an output overload. The driver is available in small 6-pin SOT-23 package.

   产品特点 返回TOPz0H嘉泰姆


 2.5V to 5.5V operating input voltage range z0H嘉泰姆

 Drives up to 8 series White LEDs z0H嘉泰姆

 1.2MHz Fixed Switching Frequency z0H嘉泰姆

 Wide range for PWM dimming (200Hz to 200KHz) z0H嘉泰姆

 Internal 1.9A switching current limit z0H嘉泰姆

 Over Voltage Protection (OVP) z0H嘉泰姆

 Internal Soft-start Function z0H嘉泰姆

 Current limit and Thermal shutdown protection z0H嘉泰姆

 Under voltage Lockout z0H嘉泰姆

 Available in the 6-pin SOT-23 Packagez0H嘉泰姆

   应用范围 返回TOPz0H嘉泰姆


 Camera Flash White LED z0H嘉泰姆

 Mobile Phone, Smart Phone LED Backlight z0H嘉泰姆

 PDA LED Backlight z0H嘉泰姆

 Digital Still Cameras z0H嘉泰姆

 Camcorderz0H嘉泰姆

   技术规格书(产品PDF) 返回TOP z0H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!z0H嘉泰姆

 QQ截图20160419174301.jpgz0H嘉泰姆

产品封装图 返回TOPz0H嘉泰姆


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电路原理图 返回TOPz0H嘉泰姆


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◀ 上一篇:CXLE8259输入电压2.5V~6V固定1.1MHZ开关频率电流模式的升压转换器100Hz到100KHz PWM占空比调光驱动串联9~10颗3串12并共36个白光LED软启动降低了启动过充电流

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