LM34919: Thermal resistance parameters

hi, Oba,

I have a Webench result about the thermal performance, 

Elena

Hello Elena,

Thanks for your reply.

THETA_JA is also available on the datasheet.
They need PSI_JT or THETA_JC. I think PSI_JT is better because it is more practical.

Regards,
Oba

Hello Elena,

Thanks for your reply.

> but for our new device datasheet included. 

What does this mean? Does this mean the datasheet of newer part number tends to have the parameters?

Regards,
Oba

I means I have see RθJC and RθJA on other part, but LM34919 only show RθJA.

Hello Elena,

I understand both parameters for LM34919 are not available.
Thank you very much for your support.

Regards,

Oba