CXLE8161

CXLE8161是一个电流模式和固定频率升压转换器,集成N-FET驱动多达10个白色LED串联。串联允许LED电流相同,亮度均匀。它的低导通电阻和反馈电压降低了功率损耗,实现了高效率。快速的1MHz电流模式的脉宽调制操作可用于输入和输出电容器和一个小电感,同时最小化输入电源上的纹波。OVP引脚监测输出电压,如果超过过电压阈值,则停止切换。内部软启动电路消除启动过程中的浪涌电流。CXLE8161/A还集成了欠压锁定、过温保护和电流限制电路

CXLE8161输入电压从2.5V到6V固定1MHz开关频率电流模式和固定频率升压转换器内部软启动电路消除启动过程中的浪涌电流欠压锁定过温保护和电流限制电路

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1.产品概述       2.产品特点     8Fx嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)8Fx嘉泰姆

5.产品封装       6.电路原理图  8Fx嘉泰姆

7.相关产品8Fx嘉泰姆

   产品概述 返回TOP8Fx嘉泰姆


The CXLE8161/A is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 10 white LEDs in series.The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and feedback voltage reduces power loss and achieves high efficiency. Fast 1MHz 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. The CXLE8161/A also integrates under-voltage lockout, over-temperature protection, and current limit circuits. TheCXLE8161/Ais available in TSOT-23-6Aand TDFN2x2- 8 packages

   产品特点 返回TOP8Fx嘉泰姆


· Wide Input Voltage from 2.5V to 6V 8Fx嘉泰姆

· 0.2V Reference Voltage 8Fx嘉泰姆

· Fixed 1MHz Switching Frequency 8Fx嘉泰姆

· High Efficiency up to 88% 8Fx嘉泰姆

· 100Hz to 200kHz PWM Brightness Control Frequency 8Fx嘉泰姆

· Open-LED Protection 8Fx嘉泰姆

· Under-Voltage Lockout Protection 8Fx嘉泰姆

· Over-Temperature Protection 8Fx嘉泰姆

·<1mA Quiescent Current During Shutdown 8Fx嘉泰姆

· TSOT-23-6A and TDFN2x2-8 Packages 8Fx嘉泰姆

· Lead Free and Green Devices Available (RoHS Compliant)8Fx嘉泰姆

   应用范围 返回TOP8Fx嘉泰姆


· White LED Display Backlighting 8Fx嘉泰姆

· Cell Phone and Smart Phone 8Fx嘉泰姆

· PDA, PMP, and MP3 8Fx嘉泰姆

· Digital Camera8Fx嘉泰姆

   技术规格书(产品PDF) 返回TOP 8Fx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8Fx嘉泰姆

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产品封装图 返回TOP8Fx嘉泰姆


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电路原理图 返回TOP8Fx嘉泰姆

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◀ 上一篇:串联驱动2到10个白光LED电流相同亮度均匀的1MHz高效率升压转换器CXLE8160低导通电阻低反馈电压降低了功率损耗实现高效率

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下一篇▶:CXLE8169白光LED设计的升压型恒流驱动器驱动单串10LED串连负载1.2MHz震荡频率1.3A电流极限单线协议提供32阶LED电流调节PWM调光信号的占空比决定反馈电压