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TPS5430: TPS5430DDAR电路图如下:

Part Number: TPS5430

上电之后有一些板子是没反应的,检测发现是TPS5430DDAR坏了,没有4.2V输出,所以整个板子就不工作了,电源指示灯不亮;不良件换了5430芯片之后就可以正常工作