TPS61230A: TPS61230A reverse current protect when no VIN

Hi Sir,

I would like to know if there is a voltage on Vout like 5V, but Vin is 0V, will the Vin/SW see a voltage?

From the schematic, it looks like we have back to back mosfet betweem Vout and SW, I think we should be able to block reverse current when there is a valid Vin.

But if there is no Vin will these back to bcak mosfet still block reverse current?

Thanks,

Patrick