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RT9728C 是針對 USB 應用的電流限制閾值可調高側功率開關 IC,內部含有單一的 P 型 MOSFET 功率開關,具有成本低、可低壓工作等特性。其開關導通阻抗僅約 120mΩ(典型值),自身電流消耗僅約 120μA,僅需一隻外接電阻便可對其電流限制閾值在 75mA-1.3A 間進行調節,閾值設置精度可達 ±10%,在故障狀態下可輸出指示信號向系統控制器報警。它內含延遲回應設計,可避免大電流衝擊造成錯誤的操作,是 USB 電源供應系統的理想選擇,同時可以可變的電流限制特性支援各種靈活的應用設計。其封裝形式為 SOT-23-6 和 WDFN-6L 2x2。
電流限制閾值精度:±10%@1.3A
電流限制閾值可調範圍:75mA-1.3A(典型值)
滿足 USB 埠電流限制需求
工作電壓範圍:2.5V-5.5V
輸入 - 輸出反向保護
內建軟啟動
120mΩ 高側 MOSFET 開關
120μA 電流消耗
符合 IEC61000-4-2(包含外接電容)的 15kV ESD 保護
Nemko 認證編號:IEC62368-1
符合 RoHS 規範,不含鹵素
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