TMP102: thermal information

Hi Mark,

RθJC(bot) is typically not provided for packages without a thermal pad on the bottom. 

Thermal information for the TMP102-Q1 can be found in section 6.4 of the datasheet here: https://www.ti.com/lit/ds/symlink/tmp102-q1.pdf. For understanding the thermal metrics used in datasheets there is this app note: Semiconductor and IC Package Thermal Metrics. 

Thank you,

Chris