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当前设计上使用8012HAQ的LDO_OUT作为电源上拉IIC引脚，当时在关机模式下查看LDO_OUT竟然=VBAT，这是个很严重的问题，大家在设计使用时最好不要使用LDO_OUT作为电源使用
也不建议使用芯片ldo出来的用来供外设