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基准电压输出为3.9V、并且很稳，换芯片后基准电压输出依然为3.9V，不能进行充电。请问是芯片问题还是我的电路设计可能导致了基准输出由3.3升高到3.9V。
建议上传下原理图，以供大家分析，应该是电路设计的问题的可能性较大。
这里是我的原理图，请大家帮我分析一下，谢谢
