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2-5.LDO稳压器自动放电功能
电子系统由多个IC和电路组成。为使系统正常工作，必须设置电源顺序，即所含IC和电路的上电顺序。为了平滑输出电压，LDO稳压器VOUT 引脚连接较大电容器。LDO稳压器关断后，平滑电容器保持一段时间充电状态，具体取决于后续IC或电路的供电电流。因此，电源顺序很难设置。LDO稳压器关断时，自动放电功能通过连接在VOUT和GND引脚之间的内部N沟道MOSFET为平滑电容快速放电，从而简化电源排序。
以下链接还提供了自动放电的说明：
应用说明：Basics of Low-Dropout (LDO) Regulator ICs
FAQ：如何快速将LDO的输出电压降为零，以便为负载端的IC设置电源顺序？
您可以通过参数搜索查找具有自动放电功能的LDO稳压器：
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