Skip to main content
Mpakr.1
Mpakr.1
Associate
June 14, 2020
Question

Hi would you please helping me on substituting IC L149, because as I already know it has not been produced any more.

  • June 14, 2020
  • 4 replies
  • 969 views

..

    This topic has been closed for replies.

    4 replies

    Peter BENSCH
    Peter BENSCH
    ST Technical Moderator
    June 16, 2020

    The L149 was a linear power driver with +-20V supply voltage and 4A driving capability, obsoleted long ago.

    There is no replacement available from STMicroelectronics.

    /Peter

    In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    Mpakr.1
    Mpakr.1Author
    Associate
    June 16, 2020

    thank you so much, but I have a problem, I have board that uses this kind of IC and its critical to replace it with something, my output driving is only 2A, I tried to replace TDA2030A and TDA2003 but non of them work, what is your suggestion?

    I would appreciate if you can help me./.

    Peter BENSCH
    Peter BENSCH
    ST Technical Moderator
    June 16, 2020

    Sorry, STMicroelectronics is not able to suggest any alternative.

    But some hint: audio amplifiers are not optimized for DC operation, so it might be worth looking for a power op amp providing at least the parameters mentioned above or the current you are mentioning.

    Good luck in finding the right part, I'm sure you will.

    /Peter

    In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    Mpakr.1
    Mpakr.1Author
    Associate
    June 17, 2020

    thank you so much your suggestion helped me. I need it very much thanks./.

    Terms & ConditionsAccessibility statement