SLVSDT1C July 2017 – June 2020 TPSM82480
The Thermal Good pin provides an open drain output. The logic level is given by the pull up source which can be VOUT. In this case, TG goes or stays Low, when the device switches off due to EN, UVLO or Thermal Shutdown.
When using an independent source for the pull up logic, the logic behavior at shutdown differs, because the TG pin internally goes high impedance. As before, TG goes Low when TG threshold is reached, but goes back High in the event of being switched off (e.g. Thermal Shutdown).