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UCC28610: Thermal resistance v.s. Characterization parameter

Part Number: UCC28610

Hi team,

If equation(8) in is recommended to estimate junction temperature, why we still need to list RθJC(top) in the datasheet?

What's the scenario to use RθJC(top)? Thanks.


  • Hi Charles,

    RΘJC(TOP) is just one of the thermal resistance paths from the die to outside the package. For estimating the actual die temperature in the application. ΨJT is the right parameter to determine the actual die temperature in the application.

    RΘJC is provided just for informational purposes. 

    Does this answer your question?