0V to 4V DC supply

Discussion in 'The Projects Forum' started by creaver31, Feb 14, 2013.

  1. creaver31

    Thread Starter Member

    Feb 2, 2012
    65
    0
    good day,
    i need to make a variable dc source from 0 to 4v dc source. my main source is a 6v charger. please help
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    You could use an adjustable voltage regulator.
     
  3. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    The general purpose ones (LM317) will only get you down to +1.25V. You would also need a negative reference supply to get to the output down to +0.0V

    creaver31, do you really need to go to 0V? What's the application?

    Ken
     
  4. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    The LT3083 3A linear regulator can be adjusted down to 0V output.
     
    #12 likes this.
  5. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    How much output current?

    Current limit protection required?
     
  6. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    I thought I put the datasheet here. Some other post is wondering why I put it there.:rolleyes:
     
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