I would like to get the junction-to-case (bottom) thermal resistance for the LMZ23608TZE/NOPB during natural convection conditions. The data sheet lists junction-to-case (top) and junction-to-ambient but does not list the junction-to-case (bottom). Based on the fact there is an exposed paddle on bottom of the NDY package I would think that the junction-to-case (bottom) resistance is less than the junction-to-case (top) 1.0 °C/W but I am not sure what the exact number is.