For the LTC6430 & LTC6431 can you provide any/all of the following thermal parameters?
Theta-JcT (Junction to case top thermal resistance)
Theta-JcB (Junction to case bottom [thermal pad] thermal resistance)
Theta-Jb (Junction to board thermal resistance)
The LTC6430 provides a single thermal parameter theta-Jc. There is an asterisk with a note saying "Measured from Junction to the back of a PCB with natural convection". That isn't how I've ever seen Theta-Jc defined. That seems much more like Theta-Jb.
For the LTC6431, Theta-Jc is also provided but WITHOUT the same asterisk even those this is the identical case and a near identical part.