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RT8109为用于驱动两组N-MOSFET的单相同步降压型 DC/DC PWM 控制器，可提供高精确率、可设计的输出电压，可藉由内部的0.6V ±1%参考电压以因应低调节电压的需求。RT8109应用单反饋的PWM电压模式控制以因应快速的瞬时响应。高驱动能力使它适用于大输出电流应用，恒定的操作频率300kHz降低了所需外加电感与电容的元件大小并节省PCB面积。RT8109同时支持tracking mode和stand-alone loop control mode。Standalone mode简单，而tracking mode提供更佳的弹性。RT8109整合了过电流保护、过电压保护以及欠电压保护于WDFN-10L 3x3封装。
/content/dam/richtek-eds/resources/product-specifications/rt81/rt8109/images/circuit/44019rwfer.jpg
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<li class="mv5"> 输入电压范围:5V 至12V</li><li class="mv5"> 驱动两组N-MOSFET</li><li class="mv5"> 恒定操作频率300kHz</li><li class="mv5"> 具外部回馈补偿的电压模式PWM控制</li><li class="mv5"> 藉由感测MOSFET R<sub>DS(ON)</sub>的过电流保护</li><li class="mv5"> 双调节控制模式 </li><li class="mv5"> Standalone Mode (FB regulating to close to internal reference 0.6V)</li><li class="mv5"> Tracking Mode (FB following PI input) </li><li class="mv5"> 致能/关机 控制</li><li class="mv5"> 占空比范围:0% 至90%</li><li class="mv5"> 快速瞬时响应</li><li class="mv5"> 符合RoHS规范与无卤特性</li>
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<li class="mv5"> 主板和桌机服务器</li><li class="mv5"> 显示适配器</li><li class="mv5"> 开关电源</li><li class="mv5"> 通用DC / DC电源稳压器</li>
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