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UC2843A: UC2843A spice model for LTspice

Part Number: UC2843A

We have buck supply designed based on UC2843 and i'm trying to simulate using LTspice. From below PSpice model which one works for me and what is the difference. Also, inside there is a "steady" and "start" .sub circuit are there, which one I need to pick. Thank you!

Models (2)

TitleCategoryTypeDate
UCC28C43 PSpice Transient Model PSpice Model ZIP 09 Dec 2008
UCCx8C43 Unencrypted PSpice Transient Model PSpice Model ZIP 18 Feb 2016