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TPS54331: Enable信号确认

Part Number: TPS54331

您好:

  我们新专案有用到贵司的tps54331,看规格书关于EN pin的描述,This pin is the enable pin. To disable, pull below 1.25 V. Float this pin to enable. Programming the input undervoltage lockout with two resistors is recommended.

Float this pin to enable:是指EN pin初始不做设置,悬空的话tps54331是可以正常输出的,是这样吧?

  EN pin悬空时,tps54331上电,量测输出电压正常,VEN=4.6V左右,想请教一下EN pin悬空,VEN的电压由什么决定的呢?

 以上,期待您的回复,谢谢!