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RT9728 是针对 USB 应用的电流限制阈值可调高侧功率开关 IC,内部含有单一的 P 型 MOSFET 功率开关,具有成本低、可低压工作等特性。其开关导通阻抗仅约 120mΩ(典型值),自身电流消耗仅约 120μA,仅需一只外接电阻便可对其电流限制阈值在 75mA-1.3A 间进行调节,阈值设置精度可达 ±10%,在故障状态下可输出指示信号向系统控制器报警。它内含延迟响应设计,可避免大电流冲击造成错误的操作,是 USB 电源供应系统的理想选择,同时可以可变的电流限制特性支持各种灵活的应用设计。其封装形式为 WDFN-6L 2x2。
电流限制阈值精度:±10%@1.3A
电流限制阈值可调范围:75mA-1.3A(典型值)
满足 USB 端口电流限制需求
工作电压范围:2.5V-5.5V
输入 - 输出反向保护
内建软启动
120mΩ 高侧 MOSFET 开关
120μA 电流消耗
符合 IEC61000-4-2(包含外接电容)的 15kV ESD 保护
Nemko 认证编号:IEC62368-1
符合 RoHS 规范,不含卤素
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