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1-2.使用负载开关IC的优点
负载开关IC集各种功能于一体，包括浪涌电流限流、自动放电、过流保护、热关断、欠压锁定和反向电流阻流，这是负载开关IC的主要优点之一。因此，负载开关IC有助于减少电路板面积并提高系统稳定性。
图1显示了一个由分立器件构成的简易负载开关示例。该电路由一个MOS传输晶体管、一个MOSFET栅极驱动IC、电阻器、电容器以及输入和输出滤波电容器组成。图2显示了负载开关IC的应用电路。与由分立器件构成的负载开关电路相比，该应用电路仅由三个元器件组成：负载开关IC以及输入和输出滤波电容器。
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