SBVS383A December 2019 – March 2020 TLV752
The junction temperature can be determined using the junction-to-ambient thermal resistance (RθJA) and the total power dissipation (PD). Use Equation 7 to calculate the power dissipation. Multiply PD by RθJA as Equation 8 shows and add the ambient temperature (TA) to calculate the junction temperature (TJ).
Calculate the maximum ambient temperature as Equation 9 shows if the (TJ(MAX)) value does not exceed 125°C. Equation 10 calculates the maximum ambient temperature with a value of 84.85°C.