CXLE8255 5-6 LED Driver, Can drive 6~4 or 3~12 LEDs 1.2MHz, High-Efficiency, Step-Up Converter for 5 to 6 White LEDs,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

                          目录afJ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）</span>afJ嘉泰姆

   5.产品封装      6.电路原理图</strong>     7.相关产品afJ嘉泰姆

一.产品概述afJ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。</span>afJ嘉泰姆

             CXLE8255驱动能力很强，最多可以驱动3串12并共36个LED。</span>afJ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.afJ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.afJ嘉泰姆

二.产品特点afJ嘉泰姆

● 输入电压范围：2.5V~6VafJ嘉泰姆

● 0.25V 参考电压</span>afJ嘉泰姆

● 固定的1.2MHZ开关频率</span>afJ嘉泰姆

● 效率达到87%（6*3）或93%（3*9）</span>afJ嘉泰姆

● 100Hz到100KHz PWM占空比调光</span>afJ嘉泰姆

● 支持欠压保护afJ嘉泰姆

● 支持过温保护afJ嘉泰姆

● 1A输入过流保护afJ嘉泰姆

● 24V OVP电压afJ嘉泰姆

● 可以驱动3串9并或3串12并白光LEDafJ嘉泰姆

●&lt;1uA的shun down 电流afJ嘉泰姆

● SOT23-6封装afJ嘉泰姆

● 无铅封装，符合ROHS标准afJ嘉泰姆

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

• 0.25V Reference VoltageafJ嘉泰姆

• Fixed 1.2MHz Switching FrequencyafJ嘉泰姆

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

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

• Under-Voltage Lockout ProtectionafJ嘉泰姆

• Over-Temperature ProtectionafJ嘉泰姆

• 24V Over voltage protectionafJ嘉泰姆

• Can driver 3*9 or 3*12 WLEDsafJ嘉泰姆

•<1μA Quiescent current During ShutdownafJ嘉泰姆

• SOT23-6 PackageafJ嘉泰姆

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

三.应用范围afJ嘉泰姆

● 功能手机、智能手机</span>afJ嘉泰姆

● PDA、PMP、MP3afJ嘉泰姆

● 数码相机afJ嘉泰姆

● 白光LED显示屏的驱动afJ嘉泰姆

• Cell Phone and Smart PhoneafJ嘉泰姆

• PDA,PMP,MP3afJ嘉泰姆

• Digital CameraafJ嘉泰姆

• White LED Display Backlighting  afJ嘉泰姆

四.技术规格书（产品PDF)afJ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</span>！</span>afJ嘉泰姆

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五.产品封装图</span>afJ嘉泰姆

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六.电路原理图</strong>afJ嘉泰姆

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七.相关芯片选择指南    更多同类产品......afJ嘉泰姆