5v Voltage Regulator

Discussion in 'The Projects Forum' started by Leccy-Lee, Aug 17, 2008.

  1. Leccy-Lee

    Thread Starter Member

    Aug 2, 2008
    22
    1
    Sorry bit of a dumb beginners question..

    A schematic i am using asks for a LM7805, but all my suppliers have is a L7805CV. Looking at Data sheet i believe it is still ok to substitute? Couldn't see what the M and CV differences made?

    Thanks
     
  2. kammenos

    Active Member

    Aug 3, 2008
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  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Different manufacturers often use trailing letters with different meanings. This can be very confusing until you can find the datasheet from the manufacturer.

    While datasheet search sites are handy, you should always go to the manufacturer's site to download their most current datasheets for the parts you're considering purchasing; you may discover that specifications have changed, the part has been discontinued, or there are better parts that you can substitute.
     
  4. dogstail

    Member

    May 8, 2008
    10
    0
    L7805CV provides 1.5A

    LM7805 provides 1A you can get a little more with good heat sink. Also thermal cutout and short circuit protect. Get both data sheets and compare depends what you making the regulator for to supply.
     
  5. Audioguru

    New Member

    Dec 20, 2007
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    All 7805 regulators in a TO-220 case are the same. They have excellent spec's up to a 1A load but still work not as good up to 1.5A.
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    I think an LM7805T gets you a TO-3 can and 1.5 amps with a heatsink.
     
  7. Audioguru

    New Member

    Dec 20, 2007
    9,411
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    No, look atr the datasheet.
    An LM7805T is in a TO-220 case.
    An LM7805K is in a TO-3 case.
     
  8. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    Why didn't I remember that?
     
  9. Leccy-Lee

    Thread Starter Member

    Aug 2, 2008
    22
    1
    Thanks guys, my circuit for now will only run 700mA so that should do fine. :)
     
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