Volvo HU850 Radio/CD-player repair, LDO-voltage regulator IC

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  • slothen92
    New Member
    • Apr 2025
    • 4
    • Denmark

    #1

    Volvo HU850 Radio/CD-player repair, LDO-voltage regulator IC

    Hello

    Im trying to repair the Volvo HU850 radio/CD-player from a Volvo V70.
    I have ordered replacements for the four transistors (SD1760), but Im not sure about a replacement for the low dropout voltage regulator IC (marked by the red circle in the attached picture).
    On the body of the IC it says: “LF33AH GK133544”.

    Does anyone know where to find this part or a replacement for it?

    Cheers
    Last edited by slothen92; 04-09-2025, 08:31 AM. Reason: Added information
  • CapLeaker
    Leaking Member
    • Dec 2014
    • 8180
    • Canada

    #2
    Mouser has like 20k of these in stock.
    Mouser Part #
    511-LF33ABDT-TR

    Comment

    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 31048
      • Albion

      #3
      http://www.farnell.com/datasheets/2815821.pdf

      Comment

      • slothen92
        New Member
        • Apr 2025
        • 4
        • Denmark

        #4
        Thanks for the answer to both of you!
        I have found this part and datasheet before posting here, but I can't find the exact identical 3.3V component labelled "LF33AH" in the datasheet under ordering information.
        Is the last "H" not that relevant to the functionality?

        Comment

        • CapLeaker
          Leaking Member
          • Dec 2014
          • 8180
          • Canada

          #5
          What’s relevant is LH33A. The H is in a different line.

          Comment

          • slothen92
            New Member
            • Apr 2025
            • 4
            • Denmark

            #6
            Originally posted by CapLeaker
            What’s relevant is LH33A. The H is in a different line.
            That broadens the scope indeed. Thank you very much for your answer.

            Comment

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