HIGH EFFICIENCY 1A STEP-DOWN CONSTANT CURRENT LED DRIVER CXLE8289是一款高效率1A降压1-5W白光LED驱动器。当输入电压下降到LED的正向电压，CXLE8289运行到LDO模式.CXLE8289支持从2.5V-6.0V输入电压范围内,让单节锂离子电池,3AA或4AA电池,USB和其他标准电源使用.实现高效率FB电压只有0.1V

   产品概述 返回TOPPp7嘉泰姆

     The CXLE8289 is a step-down constant current LED driver. When the input voltage down to lower than LED forward voltage, then CXLE8289 run into LDO mode.The CXLE8289 supports a range of input voltages from 2.5V to 6.0V,allowing the use of a single Li+/Li-polymer cell, 3AA or 4AA cell, USB,and other standard power sources.The FB voltage is only 0.1V to achieve high efficiency.CXLE8289 employ internal power switch and synchronous rectifier to minimize external part count and realize high efficiency.During shutdown, the input is disconnected from the output and the shutdown current is less than 1μA. Other key features include under voltage lockout to prevent deep battery discharge of the Li+ battery. 

 CXLE8289是一款高效率1A降压1-5W白光LED驱动器。当输入电压下降到LED的正向电压，CXLE8289运行到LDO模式.CXLE8289支持从2.5V-6.0V输入电压范围内,让单节锂离子电池,3AA或4AA电池,USB和其他标准电源使用.实现高效率FB电压只有0.1V.

产品特点 返回TOPPp7嘉泰姆

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• Efficiency up to 93%Pp7嘉泰姆

• 180μA(typ) Quiescent CurrentPp7嘉泰姆

• Output Current: Up to 1APp7嘉泰姆

• Internal Synchronous RectifierPp7嘉泰姆

• 1.5MHz Switching FrequencyPp7嘉泰姆

• Soft-StartPp7嘉泰姆

• Under-Voltage LockoutPp7嘉泰姆

• Short LED ProtectionPp7嘉泰姆

• Open LED ProtectionPp7嘉泰姆

• Thermal ShutdownPp7嘉泰姆

• 5-Pin Small TSOT25 PackagesPp7嘉泰姆

• Pb-Free PackagePp7嘉泰姆

   应用范围 返回TOPPp7嘉泰姆

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• 3AA or 4AA Batteries Powered FlashlightPp7嘉泰姆

• 1 Cell Li-Ion Battery Powered FlashlightPp7嘉泰姆

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