CXLE81102

CXLE81102升压转换器驱动恒流白色LED,为手机、PDA和其他手持设备提供背光。它的特点是允许白色发光二极管串联,以便发光二极管电流相同,亮度均匀。一个使能输入可以反复脉冲调整LED的亮度。快速1.0兆赫电流模式的PWM控制允许更小的电容和电感。故障状态保护采用逐周期电流限制,以检测最大电感电流、热保护和过电压保护。还包括软启动消除启动过程中的涌流。低参考电压使电流整定电阻器的功率损耗最小化。CXLE81102有TDFN2x2-8软件包
工作电压:2.5V至20V。
·高工作频率:1兆赫
·高输出电压:高达20V(典型值)
·数字调光控制。
·内置循环电流限制。
内置软启动功能。
·0.2V低参考电压
热过载保护

CXLE81102升压转换器驱动恒流白色LED使能输入反复脉冲调整LED的亮度逐周期电流限制检测电感电流热保护过电压保护内置循环电流限制软启动功能

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1.产品概述       2.产品特点     Hmc嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Hmc嘉泰姆

5.产品封装       6.电路原理图  Hmc嘉泰姆

7.相关产品Hmc嘉泰姆

   产品概述 返回TOPHmc嘉泰姆


The CXLE81102 step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LED’s brightness. The fast 1.0 MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection uses cycle-by-cycle current limiting to sense maximum inductor current, thermal protection and over-voltage protection. Also included soft-start eliminates inrush current during start-up. The low reference voltage minimized the power loss across the current-setting resistor. The CXLE81102 is available in TDFN2x2-8 packages

   产品特点 返回TOPHmc嘉泰姆


„ Operating Voltage: 2.5V to 20V. Hmc嘉泰姆

„ High Operating Frequency: 1MHz Hmc嘉泰姆

„ High Output Voltage: Up to 20V(Typ.) Hmc嘉泰姆

„ Digital Dimming Control. Hmc嘉泰姆

„ Built-in Cycle-by Cycle Current-Limiting. Hmc嘉泰姆

„ Built-in Soft-Start Function. Hmc嘉泰姆

„ 0.2V Low Reference Voltage Hmc嘉泰姆

„ Thermal Overload ProtectionHmc嘉泰姆

„ Thin 8-Lead 2x2 TDFN PackagesHmc嘉泰姆

   应用范围 返回TOPHmc嘉泰姆


GPS Navigation System Hmc嘉泰姆

Compact Back Light Module Hmc嘉泰姆

Constant Current Source Hmc嘉泰姆

LED ModuleHmc嘉泰姆

   技术规格书(产品PDF) 返回TOP Hmc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Hmc嘉泰姆

 QQ截图20160419174301.jpgHmc嘉泰姆

产品封装图 返回TOPHmc嘉泰姆


image.pngHmc嘉泰姆

电路原理图 返回TOPHmc嘉泰姆


 Hmc嘉泰姆

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下一篇▶:CXLE81103升压转换器驱动恒流白色LED软启动消除启动过程中的涌流使能输入反复脉冲调整LED的亮度内置循环电流限制软启动功能数字调光控制