宽输入升/降压白光LED驱动器White LED Driver For Buck-Boost Application CXLE8168是一款具有宽输入电压范围、专为驱动白光LED设计的恒流升压转换器。凭借其特殊的拓扑结构，芯片提供的负载电压既可以高于输入电压，又可以低于输入电压。芯片可以同时对多路串、并联的LED提供精准的电流调制

   产品概述 返回TOPbN3嘉泰姆

      CXLE8168是一款具有宽输入电压范围、专为驱动白光LED设计的恒流升压转换器。凭借其特殊的拓扑结构，芯片提供的负载电压既可以高于输入电压，又可以低于输入电压。芯片可以同时对多路串、并联的LED提供精准的电流调制。CXLE8168具有Analog/PWM两种模式的亮度调节功能，只需要在CTRL引脚加入Analog/PWM信号即可对LED亮度进行控制。芯片的工作频率高达1MHz，结合以脉宽调制（PWM）的工作模式，在保证最小输入纹波的情况下允许用户使用较小的输入/输出电容和电感。可编程的软启动能够消除芯片启动时的浪涌电流。CXLE8168采用8-pin 3mmx3mm TDFN封装。The CXLE8168 is a constant current boost converter specially designed for driving white LEDs with wide input range. The unique converter topology provide a load voltage which can be greater or less than the input voltage. With the tightly regulated load current, the CXLE8168 allows series connection with multiple strings of the white LEDs. The brightness of the LEDs can be adjusted through a voltage level on the CTRL pin or by applying a PWM signal to CTRL pin. 1MHz current-mode, pulse-width modulated (PWM) operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Programmable soft-start eliminates inrush current during startup. The CXLE8168is available in a space-saving, 8-pin 3mm x 3mm TDFN package.

   产品特点 返回TOPbN3嘉泰姆

bN3嘉泰姆

• 6～25V输入电源电压bN3嘉泰姆

• 32V过压保护bN3嘉泰姆

• 效率高达90%bN3嘉泰姆

• PWM和Analog两种调光方式bN3嘉泰姆

• 高压功率管内置</p>

• 1MHz开关频率</p>

• 小尺寸外围电感、电容</p>

• 3mm × 3mm TDFN8封装bN3嘉泰姆

• 符合RoHS规范及Pb-FreebN3嘉泰姆

􀁺 6V to 25V Input RangebN3嘉泰姆

􀁺 32V (typ.) Output with Overvoltage ProtectionbN3嘉泰姆

􀁺 Up to 90% EfficiencybN3嘉泰姆

􀁺 Flexible Analog or PWM Dimming ControlbN3嘉泰姆

􀁺 Internal High Power MOSFET SwitchbN3嘉泰姆

􀁺 1MHz PWM OperationbN3嘉泰姆

􀁺 Small, Low-Profile Inductors and CapacitorsbN3嘉泰姆

􀁺 3mm× 3mm TDFN-8 PackagebN3嘉泰姆

􀁺 RoHS Compliant and 100% Lead (Pb)-FreebN3嘉泰姆

   应用范围 返回TOPbN3嘉泰姆

bN3嘉泰姆

• 7~10吋白光LED背光显示驱动bN3嘉泰姆

• 12V汽车显示系统bN3嘉泰姆

• PDVD和微型笔记</p>

• LED照明设备bN3嘉泰姆

􀁺 7~10 inch White LED Display BacklightingbN3嘉泰姆

􀁺 12V Automotive Display SystembN3嘉泰姆

􀁺 PDVD and SubnotebooksbN3嘉泰姆

􀁺 LED LightingbN3嘉泰姆

   技术规格书（产品PDF) 返回TOP bN3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>
bN3嘉泰姆