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RT5762是输入电压范围为 2.5V~6V、负载能力为 2A、简单易用的同步 Buck 转换器，内含 0.6V 高精度参考电压源和低 R<SUB>DS(ON)</SUB> MOSFET 功率开关，转换效率高，以 SOT-563 (FC) 和 UDFN-6L 1.4x1 (FC) 封装形式供货。</br>RT5762采用改进型固定导通时间（ACOT<SUP>®</SUP>）控制架构，具有超快瞬态回应速度，周边元件少，在整个输入、输出和负载范围内具有几乎恒定的工作频率。在轻载时，RT5762A/C/E 自动运行于 PSM 模式以维持高转换效率，RT5762B/D/F 则工作于强制 PWM 模式以满足应用对高输出电压精度的要求。</br>RT5762通过对上下桥 MOSFET 流过电流的检测实现强劲的过流保护，每个周期都进行的电流限制可防止器件在出现输出端短路、过流或电感饱和等现象时免于受到严重的损坏。其内建的软启动功能可避免在启动期间出现电流冲击，还有输入欠压锁定保护、输出欠压保护、过压保护（RT5762AL/BL/CL/DL/EL/FL）和过热保护等功能可确保其在各种工作状态下的安全和平稳的运行。
RT5762 电路图
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<div class="spec-list"><ul class="lv1"><li>输入电压范围：2.5V~6V </li><li>集成 100mΩ/70mΩ MOSFET 功率开关 </li><li>100% 占空比支援低压差运行 </li><li>内部参考电压精度：1% </li><li>典型工作频率：1.2MHz </li><li>轻载时，RT5762A/C/E 以节能模式运行 </li><li>ACOT<sup>®</sup> 控制架构 </li><li>内置 1.5ms 软启动时间 </li><li>使能控制 </li><li>Power Good 指示 </li><li>负电流过流保护（RT5762B/D/F） </li><li>输入欠压锁定保护、过压保护、欠压保护、逐周期电流限制保护和过热保护 </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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RT5762 订购信息
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<div class="spec-list"><ul class="lv1"><li>行动电话和手持设备 </li><li>机上盒、数据机等通讯设备 </li><li>网路设备和存储装置 </li><li>通用负载点低压调节器 </li></ul></div>
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