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Trying to find a datasheet UC81541

Discussion in 'Datasheets, Manuals and Component Identification' started by Rjay, Jun 15, 2010.

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  1. Rjay


    Jun 15, 2010
    Hi All,

    I am a newbie to your site. I am trying to find data on a Unitrode UC81541 SOP-8 part. I don't even know the description. It is part of a switching power supply within an AC VF Drive. Usually, I can find a datasheet but this one come up blank no matter where I look.

    Does anyone have any ideas? Any help is appreciated.


    Longmont, Colorado
  2. bob_rich


    Nov 10, 2010

    Unitrode parts are now handled/made by Texas Instruments. Other also do copies. usually the UC part is dropped from the number.

    hope this helps

    best of luck
  3. davenn

    davenn Moderator

    Sep 5, 2009
    The UC81541 aparently was a made to order IC hence why you cant find a data sheet for it

    the similar available part is the UC2844

    They are a PWM chip used in SMPS's

    cant help any further
    made to order chips are a "pain in the butt" I have a number of different IC's and other RF devices that I cant get data for for the same reason

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