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TPS704: 系列的TPS70445PWP芯片与TPS70345芯片的兼容问题?

Part Number: TPS704

请问群里的大神,TPS70345的设计已经做完了,可是目前这款芯片供货非常困难,请问用TPS70445PWP可否完全替代,引脚是否可以做到完全兼容?