Part Number: LM5008
Tool/software: WEBENCH® Design Tools
Hi,
Greetings.
Our customer tried to design in Webench using the PN LM5008MM/NOPB. When they are reviewing the design detail they noticed that the Theta_JA for the IC has a different value than the value on the datasheet.
For the DGK (VSSOP) package, it is stated in the datasheet that it was 139.7°C/W however on Webench it was 40°C/W. I've attached an image below highlighting the difference. 
They want to know if which one is correct. I think they should follow the datasheet information.
Can you please verify which one is the correct value?
Any help for this matter is much appreciated.
Thank you and have a great day.
Regards,
Cedrick