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Product Spec Banner
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RT8867 是集成了3组 MOSFET 驱动器的改进型4/3相同步 Buck 控制器，它集成了8位 DAC 以支援 Intel VR11.x CPU 的电源供应，使用了最先进的动态相位控制技术，可在 PS1/2/3 等引脚的控制下动态改变工作相数，可在很宽的负载范围内获得很高的效率。它使用了无损耗的 R<sub>DS(ON)</sub> 电流检测技术进行电流平衡操作，其工作频率可调，软起动可调，具有短路保护、可调的过流保护、过压保护、欠压保护等功能，还有电源准备好、VR_HOT 和 <span class="overline">VR_SHDN</span>等指示信号输出。RT8867 使用了 WQFN-48L 6x6 的小型封装。
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<div class="spec-list"><ul class="lv1"><li>12V 电源供应电压 </li><li>4/3相电源转换 </li><li>集成了3组 MOSFET 驱动器和自举二极管 </li><li>具有动态相数控制能力 </li><li>使用8位 DAC 支持 Intel VR11.x CPU </li><li>使用无损耗的 R<sub>DS(ON)</sub> 电流检测技术实现电流平衡 </li><li>可调工作频率范围：50kHz~1MHz </li><li>可调过流保护 </li><li>可调软起动 </li><li>具有 VR_RDY, VR_HOT 和 <span class="overline">VR_SHDN</span> 等指示信号输出 </li><li>小型48引脚 WQFN 封装 </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Desktop CPU Core Power </li><li>Middle/High End Graphic Cards </li><li>Low Voltage, High Current DC/ DC Converters </li></ul></div>
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