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RT9554 的设计目标是过流检测。电流流经 CSP 和 CSN 之间的电阻形成的电压被放大 200 倍后与 BAT_REF 端的电压进行比较,检查其是否发生了过流状况。RT9554 还为其用户准备了一个比较器,它的两个输入端分别名为 AC_REAL 和 AC_REF。<span class="overline">FLAG</span> 是一个输出端,它是开漏配置的,用户可在它和某个电源之间连接一只电阻,一旦过流状况发生,或是 AC_REAL 端的电压高于 AC_REF 端的电压,<span class="overline">FLAG</span> 即被拉低。RT9554 的封装是 WDFN-8L 2x2。
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<div class="spec-list"><ul class="lv1"><li>共模输入电压最高可达 24V </li><li>VCC 工作电流:200μA </li><li>VCC 关机电流:5μA(在 S3/S4/S5 状态下) </li><li>可编程过流阈值 </li><li>过流保护发生时<span class="overline">FLAG</span> 变为低电平 </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>笔记本电脑 </li></ul></div>
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