Hello,
Datasheet item 6.1 Absolute Maximum Ratings note (3) states de following:
"The maximum power dissipation is a function of TJ(MAX), RθJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) − TA) / RθJA. If this dissipation is exceeded, the die temperature can rise above the TJ(MAX) of 150°C, and the LM2936Q may go into thermal shutdown"
Thus, what would be the reason to have at 6.3 Recommended operating conditions the specification "Temperature Tj -40°c to +125°C"?
Reason for the question is that in my application, calculating with Tjmax=150°C I would have
- power dissipation at Vnominal and Inominal below PD
- power dissipation at Vmax and Imax below PD
But calculating for Tjmax=125°C I get:
- power dissipation at Vnominal and Inominal below PD
- power dissipation at Vmax and Imax above PD
Thanks and kind regards,
