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TUSB4020BI: TUSB4020BIPHPR

Part Number: TUSB4020BI

您好,设计了一个关于tusb4020bi得电路,1.1V采用的是500mA的LDO芯片,现在现象是usb能识别到,但是不稳定,端口一直在刷新,请问下这个是什么问题?