TPS62730 UVLO

Original Question: TPS62730 UVLO 

The input voltage range of TPS62730 is 1.9V to 3.9V.   When Vin=1.8V, the Vout keeps 1.8V or 0V(Shutdown) at bypass mode? Could you tell me the UVLO?

Verified Answer: RE: TPS62730 UVLO 

This device actually does not have a UVLO.  When Vin drops below Vit byp, it switches to 100% mode, shorting Vin to Vout.  With 1.8Vin, Vout will be some IR drop below this.