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VBAT_SEC接电池3.8V， 初始没有负载可以正常输出电压，之后接负载也可以正常输出电压；初始有负载就如图所示，就会拉低。
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VBAT_SEC接电池3.8V， 初始没有负载可以正常输出电压，之后接负载也可以正常输出电压；初始有负载就如图所示，就会拉低。