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RT8120 是通过驱动两只 N-MOSFET 实现的单相同步 Buck 控制器，可藉其自身具有的 0.8V±1% 或 0.6V±1.5% 参考电压提供可调节的高精度低压输出。它使用单反馈回路的电压模式控制架构实现快速的瞬态响应，使用 300kHz 的固定工作频率，外部电感和电容尺寸较小，可减少 PCB 占用面积。它在大电流应用中具有快速瞬态响应能力，同时具有外部元件少的优势，适用于高性能图像处理器、DDR 存储器 VTT 电源等应用。其误差放大器使用外接补偿电路，内置软启动和输出使能功能，以 SOP-8 和含有散热焊盘的 SOP-8 封装供货。
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<div class="spec-list"><ul class="lv1"><li>输入电压范围：3V~13.2V </li><li>内建自举二极管 </li><li>内建 0.8V±1% 或 0.6V± 参考电压源 </li><li>栅极驱动器具有直通保护和短脉冲消除功能 </li><li>300kHz 固定工作频率 </li><li>内置软启动 </li><li>利用 MOSFET R<sub>DS(ON)</sub> 进行过流保护 </li><li>使能/关机控制 </li><li>驱动两只 N-MOSFET </li><li>占空比范围：0%~85% </li><li>快速瞬态响应 </li><li>使用外加反馈补偿的电压模式控制架构 </li><li>共用 LGATE 实现过流阈值设定 </li><li>欠压保护 </li><li>SOP-8 和 PSOP-8 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>使用 5V 或 12V 电源的显卡、主板等系统 </li><li>图像卡 </li><li>3.3V~12V 输入的 DC/DC 稳压器 </li><li>低压分布式电源 </li></ul></div>
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