CXLE8858

CXLE8858是一款升压转换器,设计用于从单电池锂离子电池lon batleU+驱动多达7个系列的白色LED。CXLE8858采用电流模式,固定频率结构来调节LED的fxuuuhqw,Zhich是通过一个外部电流感测电阻器来测量的。它的低200毫伏反馈电压降低了功率损耗并提高了效率CXLE8858包括欠压锁定、限流和热过载保护,防止在输出过载的情况下损坏。优化后的工作频率能满足LC滤波器值小、lRZ工作电流要求,效率高。内部软启动功能可减少涌流电流。微型封装类型为节省PCB空间和总BOM coVW提供了最佳解决方案
高效率:高达90%
l 1.2兆赫定频运行
集成内部功率MOSFET
驱动多达7个系列的WLEDs
低200mV反馈电压
宽频率范围软启动/调光
UVLO,热停堆
内部电流限制
过电压保护
小LC滤波器
尽量减少外部组件

CXLE8858升压转换器从单电池锂离子电池lon batleU+驱动多达7个系列的白色LED电流模式固定频率结构来调节LED通过外部电流感测电阻器来测量的宽频率范围软启动/调光

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   产品概述 返回TOPq88嘉泰姆


The CXLE8858 is a step-up converter designed for driving up to 7 series white LEDs from a single cell Lithium lon batleU The CXLE8858 uses current mode, fixed frequency architecture to regulate an LED FXUUHQW ,Zhich is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency The CXLE8858 includes under-voltage lockout, current limiting and thermal overload protection preventing damage in the event of an output overload. Optimized operation frequency can meet the requirement of small LC filters value and lRZ operation current with high efficiency. Internal soft start function can reduce the inrush currenW. Tiny package type provide the best solution for PCB space saving and total BOM coVW

   产品特点 返回TOPq88嘉泰姆


 High Efficiency: Up to 90% q88嘉泰姆

 1.2MHz Constant Frequency Operation q88嘉泰姆

 Integrated internal Power MOSFET q88嘉泰姆

 Drives up to 7 Series WLEDs q88嘉泰姆

 Low 200mV Feedback Voltage q88嘉泰姆

 Soft-start/Dimming with wide Frequency Range q88嘉泰姆

 UVLO, Thermal Shutdown q88嘉泰姆

 Internal Current limit q88嘉泰姆

 Over Voltage Protection q88嘉泰姆

 Small LC Filter q88嘉泰姆

 Minimize the External Component q88嘉泰姆

<1μA Shutdown Current q88嘉泰姆

 SOT23-6 Packageq88嘉泰姆

   应用范围 返回TOPq88嘉泰姆


 Camera Flash White LED q88嘉泰姆

 Mobile Phone, Smart Phone LED Backlight q88嘉泰姆

 PDA LED Backlight q88嘉泰姆

 Digital Still Cameras q88嘉泰姆

 Camcorderq88嘉泰姆

   技术规格书(产品PDF) 返回TOP q88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!q88嘉泰姆

 QQ截图20160419174301.jpgq88嘉泰姆

产品封装图 返回TOPq88嘉泰姆


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电路原理图 返回TOPq88嘉泰姆


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◀ 上一篇:CXLE87100可调节输出电流的升压型DC-DC稳压器1.0MHz恒定的开关频率两节碱性电池驱动高达1A负载电流LED电流通过外部电流检测电阻来编程Rs连接在反馈引脚FB和地之间

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下一篇▶:CXLE8802白光LED驱动恒流DC/DC转换器内部MOSFET支持10个白光LED背光和OLED电源的应用内部软启动功能通过外部电流检测电阻来调节LED电流宽范围PWM调光