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TPS25942A: TPS25942A引脚可施加最高电压疑问

Part Number: TPS25942A

 如图摘自TPS25942A数据手册,OVP引脚最高可是18V,如果我的供电是12V(IN=12V),OVP也是可以施加18V的吗?我的理解是所有引脚施加的电压不应超过供电电压,18V供电其它引脚都要<18V,12V供电其它引脚都要<12V,而不是12V供电,其它引脚也可以加18V电压(如OVP),麻烦指导一下?