• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 219 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC24624: Maximum TJ rating

Hidekazu Someno
Expert 5130 points
Part Number: UCC24624

HI Team,

I would like to confirm the relationship BTW Tstg(max)=150C and TJ(max)=125C specified in absolute maximum rating table.

Tstg should show the maximum junction temperature for the IC in unpowered storage and TJ should show the maximum junction temperature for all conditions with or without IC power. Normally, I think that the maximum rating temperature of both Tstg and TJ is specified as the same temperature of TJ = 150C for all other products.

How must we understand about the relationship(Tstg(max) is higher than Tj(max) by 25C)?　What is the reason why this IC has the spec like that?

Regards,
H.Someno

        

  • 0
    TI__Guru* 86206 points

    Hello,

    One is storage teampature and the other is operating teampature.

    >Storage is not operating/running. The device is sitting on the shelf and will not be damaged under those tempatures.

    Regards,

  • 0 in reply to Mike O'
    TI__Expert 5130 points

    Mike-san,

    Thanks for your reply.  I understood the your contents .

    What my customer(and I) wants to know is what is the rationale for setting a 25°C difference between Tstg(MAX)=150C and TJ(MAX)=125C.
    It is understood that Tstg is the rating under stored conditions(sitting state) with no power (no operation), and Tj is the rating temperature when the IC is operating.

    - Why is the rated temperature(TJ) under operating lower than tstg?
    - Most TI products are specified at the same temperature (both 150°C), but this product has a temperature difference between the two.
      I'm guessing that these ratings are set for some reason, why?

    Regards,

    H.Someno

  • 0 in reply to Hidekazu Someno
    TI__Guru* 86206 points

    Hello Since,

    You contacted me directly. I am closing out this thread.

    Regards,