5V Regulator Circuit

Discussion in 'Embedded Systems and Microcontrollers' started by JDR04, Mar 6, 2015.

  1. JDR04

    Thread Starter Active Member

    May 5, 2011
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    4
    Hello everyone. I'm hoping somebody can help me with this.

    Attached is the circuit I use to obtain 5V for most of my microcontroller projects. I'm hoping somebody can show me a better way which results in a more compact board and uses less parts.

    Is it possible? Thanks a lot.....JDR04
     
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,386
    1,605
    That's about as simple as it gets and just what I do.

    The only thing simpler is to use a regulated 5V wall wart.
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,498
    2,364
    If the current is relatively small and fairly constant, a simple resistor, cap and 5v zener works fine.
    Max.
     
  4. josip

    Member

    Mar 6, 2014
    63
    12
    There are regulators that work with 4.7uF (or less) cap at input/output. All available in small footprint (603 caps).
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    The 100uF on the input maybe too small, depending on the load current, especially considering half-wave rectification; full-wave would be better.
    The 100uF on the output is too big. Go with what is recommended on the regulator's data sheet.
     
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