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LM317-N: Thermal Shutdown Temperature for LM317 and LM317-N

Guru 10970 points
Part Number: LM317-N
Other Parts Discussed in Thread: LM317,

Tool/software:

Hi,

We are currently considering the use of your LM317 and LM317-N devices in our design, and we would like to confirm the thermal shutdown operation temperatures for both.

We understand that typically thermal shutdown is expected to operate around 150°C junction temperature, but we would like to clarify:

  • What is the official thermal shutdown activation temperature for LM317 ? From the related thread it seems to be around 150°C.
  • What is the official thermal shutdown activation temperature for LM317-N? Could you also confirm if the LM317-N might start thermal shutdown at around 125°C of junction temperature or strictly around 150°C?

Thank you very much for your time and support.

Conor