• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 731 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

LM2940-N: Product Enhancement Test

K.Hamamoto
Guru 12155 points
Part Number: LM2940-N

Hi

Regarding National product (National Semiconductor product), "P+ Product Enhancement Tested" is written at "Features" on the datasheet.

I understand it old device of National Semiconductor. However our customer ask us what is it. Could you explain about what is that test?

Best Regards,

Koji Hamamoto

  • 0
    TI__Genius 10200 points
    Hi Koji Hamamoto,

    As you have pointed out this is an old National Semiconductor device. Please allow me some time to look into this question.

    Thanks,
    Gerard
  • 0 in reply to Gerard Copeland
    TI__Genius 10200 points

    Hi Koji Hamamoto,

    The P+ product enhancement program originally involved testing to screen out assembly and silicon defects that could cause safe operating area and other failures under high stress conditions. The improvement in manufacturing quality and test coverage since then has removed the need to mention P+ Enhancement Tested in modern devices. It is essentially covered on all products through Abs. Max. testing, short circuit current testing, and other safe operating area tests. Additional information regarding P+ Product Enhancement testing can be found in Appendix C of the National Semiconductor Power ICs Databook here: NationalSemiconductor-PowerICsDatabook1995OCR_AppendixC.pdf

    Thanks,

    Gerard

  • 0 in reply to Gerard Copeland
    Guru 12155 points
    Hi Gerard,

    Thank you so much for the confirming.

    I understood the test is to improve the in manufacturing quality.
    So, please let me double-check.
    You don't test such as the P+ product enhancement program anymore even if the device on the following list. Is that correct?

    * NationalSemiconductor-PowerICsDatabook1995OCR_AppendixC.pdf

    Best Regards,
    Koji Hamamoto
  • 0 in reply to K.Hamamoto
    TI__Genius 10200 points
    Hi Koji Hamamoto,

    Yes, that is correct, the P+ product enhancement program is no longer in effect. However, I would like to reiterate that the original goal of the P+ product enhancement program (to screen out defects) is still achieved through various safe operating area tests that are applied to all devices. This includes the devices listed in Appendix C that are still being manufactured.

    Thanks,
    Gerard
  • 0 in reply to Gerard Copeland
    Guru 12155 points
    Hi Gerard,

    Thank you. I understand.

    Best Regards,
    Koji Hamamoto