ZHCSOZ7A june 2022 – august 2023 TPS7B4255-Q1
PRODUCTION DATA
Equation 4 calculates the device power dissipation.
where:
Because IQ is much less than IOUT, the term IQ × VIN in Equation 4 can be ignored.
Calculate the junction temperature (TJ) with Equation 5 for a device under operation at a given ambient air temperature (TA).
where:
Equation 6 calculates a rise in junction temperature because of power dissipation.
The maximum ambient air temperature (TAMAX) at which the device can operate can be calculated with Equation 7 for a given maximum junction temperature (TJMAX).