• [ CXLE8255 ]"

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                          目录oX3嘉泰姆

   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）oX3嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品oX3嘉泰姆

一.产品概述oX3嘉泰姆

      CXLE8255是一款固定频率电流模式的升压转换器，内部集成了N-FET，可以驱动串联5~6颗白光LED，LED电流可以通过多种方式来做调整，1.2MHZ的工作频率减小了输入输出电容选择和纹波。OVP管脚避免了输出过压烧毁芯片的可能。内部集成的软启动降低了启动过充电流。还集成了欠压保护、过热保护、过流保护功能。封装为超小型的SOT23-6封装。oX3嘉泰姆

             CXLE8255驱动能力很强，最多可以驱动3串12并共36个LED。oX3嘉泰姆

     The CXLE8255 is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 5~6 white LEDs in series. The series connection allows the LED current to be identical for uniform brightness. Its low on resistance of N- FET and feedback voltage reduce power loss and achieve high efficiency. Fast 1.2MHz current-mode PWM operation is available for input and output capacitors and a small inductor while minimizing ripple on the input supply. The OVP pin monitors the output voltage and stops switching if exceeds the over-voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up. It can driver 3(series)*12(parallel) LEDs.oX3嘉泰姆

   The CXLE8255 also integrates under-voltage lockout, over-temperature protection, and current limit circuits. The CXLE8255 is available in a SOT-23-6 package.oX3嘉泰姆

二.产品特点oX3嘉泰姆

● 输入电压范围：2.5V~6VoX3嘉泰姆

● 0.25V 参考电压oX3嘉泰姆

● 固定的1.2MHZ开关频率oX3嘉泰姆

● 效率达到87%（6*3）或93%（3*9）oX3嘉泰姆

● 100Hz到100KHz PWM占空比调光oX3嘉泰姆

● 支持欠压保护oX3嘉泰姆

● 支持过温保护oX3嘉泰姆

● 1A输入过流保护oX3嘉泰姆

● 24V OVP电压oX3嘉泰姆

● 可以驱动3串9并或3串12并白光LEDoX3嘉泰姆

●<1uA的shun down 电流oX3嘉泰姆

● SOT23-6封装oX3嘉泰姆

● 无铅封装，符合ROHS标准oX3嘉泰姆

• Wide input Voltage from 2.5V to 6VoX3嘉泰姆

• 0.25V Reference VoltageoX3嘉泰姆

• Fixed 1.2MHz Switching FrequencyoX3嘉泰姆

• High Efficiency up to 87%(6*3) or 93%(3*9)oX3嘉泰姆

• 100HZ to 100KHZ PWM Brightness Control FrequencyoX3嘉泰姆

• Under-Voltage Lockout ProtectionoX3嘉泰姆

• Over-Temperature ProtectionoX3嘉泰姆

• 24V Over voltage protectionoX3嘉泰姆

• Can driver 3*9 or 3*12 WLEDsoX3嘉泰姆

•<1μA Quiescent current During ShutdownoX3嘉泰姆

• SOT23-6 PackageoX3嘉泰姆

• Lead Free and Green Devices Available (ROHS Compliant)oX3嘉泰姆

三.应用范围oX3嘉泰姆

● 功能手机、智能手机oX3嘉泰姆

● PDA、PMP、MP3oX3嘉泰姆

● 数码相机oX3嘉泰姆

● 白光LED显示屏的驱动oX3嘉泰姆

• Cell Phone and Smart PhoneoX3嘉泰姆

• PDA,PMP,MP3oX3嘉泰姆

• Digital CameraoX3嘉泰姆

• White LED Display Backlighting  oX3嘉泰姆

四.技术规格书（产品PDF)oX3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！oX3嘉泰姆

 oX3嘉泰姆

五.产品封装图oX3嘉泰姆

  oX3嘉泰姆

六.电路原理图oX3嘉泰姆

   oX3嘉泰姆

七.相关芯片选择指南    更多同类产品......oX3嘉泰姆

◀ 上一篇:CXLE82127同步升压高精度的电流接收器低占空比调光高效率的升压转换器低边和高边功率MOSEFT内部电流限制1A驱动多达8个LED和50mA的总输出电流PWM调光通过EN引脚脉宽调制亮度控制

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下一篇▶:CXLE8256固定频率电流模式的升压转换器集成了N-FET串联7~8颗白光驱动3串12并共36个LED固定的1.1MHZ开关频率100Hz到100KHz PWM占空比调光