LT8711 SEPIC Converter BIAS and IntVEE pins

Hi everyone,

We are designing a power supply using the LT8711 in SEPIC configuration..

Regarding the datasheet, it specifies to connect INTVee to BIAS pin:

In the demo board schematic DC2234A it is connected as the datasheet.

On the other side, in the LTSPICE simulation of the LT8711 Demo Circuit - Automotive Micropower Synchronous Sepic Converter (4.5-40V to 12V @ 4A) the IntVEE is not connected to the BIAS pin but it is connected to VIN:

I understand that the INTVEE regulator regulates to 5.15V below the BIAS pin voltage but what is the reason they are not connected together to Vout in the simulation?

Thank you 

Alexis

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