Question
For carrying out the analysis the following part specifications are necessary:
1)Power Dissipation (W)
2)Junction Temperature (TJ)
3)Case Temperature (Tc)
4)Junction to ambient thermal resistance (θJA)
5)Junction to case thermal resistance (θJC)
6)Case to Ambient thermal resistance (θCA)
Answer
ADR3412ARJZ-R2:
The power dissipation and Junction Temperature need to be calculated.
1. Quiescent Power Dissipation = (Vsupply)(Isupply – Iout). So this will vary,
depending on the supply voltage that they are using and the output current
that is going to the load.
2. Tjunction = Tambient +( Theta-JA)(Power dissipation). The Thermal Resistance
is shown below.
In other words, power dissipation and junction temperature are application
dependent. If the customer can give us this information, we will be happy to
calculate the power dissipation and junction temperature for them.