3W Power Supply Design

Hello All,

I am designing a 3W Power Supply.

Input Specification:

Input: 230V A.C at 50Hz

Output: 12V D.C @ 0.35A current

In my design WEBENCH design it is suggesting me LM5023, 

In my design, for voltage reference I am using LMV431(R-PDSO-G3 type) which has 3 pins.

But on TI website it dose't shows any of the variants of LMV431 with 3 pins.

Please Help...