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TPS5450最大功率问题

Expert 1550 points
Other Parts Discussed in Thread: TPS5450, TPS56628, LM43603

TPS5450的最大功率是多少?现在输出8.4V 3A发热极其严重,电流再高点就高温保护了(无散热片)。如果TPS5450的功率不够,请推荐一款功率足够的IC。