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datasheet上的输入范围是4.5V~17V，当输入为5V时tps562200输出只有4.2V左右，只有输入电压大于6.5V时才能输出5V，电路和EVM是一样的，请问这是什么原因？
亲，这是降压同步BUCK，输出永远比输出低！没人保证整个输入范围都输出5V。你是啥要求？
