TPS22917: External pull-down for ON pin?

Part Number:TPS22917

Hi,

The TPS22917 datasheet says that the ON pin has an internal Smart Pull Down that pulls the ON pin down when it is not driven, negating the need for an external pull-down. The Pin Functions table in the same datasheet also states to not leave this pin floating.

Which is it?

Referencing TPS22917 datasheet - SLVSDW8A –SEPTEMBER 2017–REVISED FEBRUARY 2018

Thanks,
Will