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RT9742 是用于 USB 应用的低成本、低压高侧功率开关，同时具备低导通电阻和低电流消耗的特性。</br>它集成了过流保护电路、短路电流折返电路、热关机保护电路和欠压锁定保护电路以实现所有的保护功能，有故障指示输出可向USB控制器指示故障状态，还集成了延时功能以防止冲击电流所造成的误操作。它是 USB 电源应用的理想选择，也同时支持其它灵活的应用，其封装形式有 TSOT-23-5、TSOT-23-5 (FC)与SOT-23-3。
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<div class="spec-list"><ul class="lv1"><li>70mΩ/55mΩ（典型值） N-MOSFET 开关 </li><li>工作电压范围：2.7V~6V </li><li>具有反向电流阻止能力 </li><li>欠压锁定保护 </li><li>可消除抖动的故障指示 </li><li>具有电流折返特性的过热保护 </li><li>过流保护 </li><li>短路保护 </li><li>UL认证编号：E219878 </li><li>Nemko认证编号：NO87949 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>USB设备 </li><li>笔记本电脑 </li></ul></div>
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