TPS2557,QFN封装,额定电流为500ma-5A。
当我选择使用4.5A电流输出,并一直持续此状态时(24h*7),IC的电源输出脚最大宽度为1.2mm,这么小宽度在PCB上如何长时间稳定的散出5A的电流?
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