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请问tps60400，tps60401，tps60402，tps60403，有什么区别？
Eric,
主要区别是内部的开断MOSFET的开关频率不同。开关频率影响到器件的静态电流和外部电容的选取。
具体的设计要求请参考规格书
http://www.ti.com.cn/cn/lit/ds/symlink/tps60403.pdf
谢谢
