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.

  • TI Thinks Resolved

TLVH431A: Enquiry on Junction-to-ambient thermal resistance

Expert 1510 points

Replies: 3

Views: 77

Part Number: TLVH431A

Hi,

This is for TLVH431AQDCKR P/N (DCK Package).

My customer would like to understand why the Junction-to-ambient thermal resistance spec is smaller than Junction-to-case thermal resistance.

As per their understanding, Junction-to-ambient thermal resistance is always bigger than Junction-to-case. Is the thermal resistance spec information correct?

Please kindly help to advise, thanks.

Best Regards,

Philip

  • Hi Philip,

    it seems the numbers are swapped. I am unsure on how this happened. the Rja should be 259 and Rjc should be 87.

    I will work on getting this fixed on the next revision.

    -Marcoo

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    If you feel your thread is resolved, please selected Answered.

    If you are using the TL431, check out the new ATL431LI for improved system performance in a p2p package or a ultra  small X2SON (1mm x 1mm x 0.4mm)

    Check out: Voltage Reference Design Tips For Data Converters a new app note that discusses voltage reference error and how it affects ADCs/DACs

  • In reply to Marcoo Z:

    Hi Marcoo,

    Thanks for the confirmation.

    I will wait for the next revision before I submit the revised document for document approval.

    Regards,

    Philip

  • In reply to Philip:

    Hi Philip,

    Sounds good!

    I will work on the revision but it will take a while for release.

    -Marcoo

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    If you feel your thread is resolved, please selected Answered.

    If you are using the TL431, check out the new ATL431LI for improved system performance in a p2p package or a ultra  small X2SON (1mm x 1mm x 0.4mm)

    Check out: Voltage Reference Design Tips For Data Converters a new app note that discusses voltage reference error and how it affects ADCs/DACs

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.