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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/717267/lmz34002-ic-connections
PH 引脚在内部连接到 LMZ34002、因此如果 PCB 上的引脚未连接、器件将按预期工作。 PH 引脚的铜连接有助于提高热性能、但只要 PH 引脚和焊盘焊接到 PCB 上的焊盘上、它就有助于散热。
