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TPS65910 VRTC输出只有0.8V问题

Other Parts Discussed in Thread: TPS65910, AM3352

我使用了TPS65910电源管理芯片,去给AM3352供电, VCC(1~7)输入为3.4V,上电后VRTC输出为0.8V(VRTC仅作AM3352 RTC供电和其自己的BOOT1上拉),不知有没有大虾遇到过这种情况?求帮忙,谢谢!

已经尝试把其它各路输出断开了,还是一样