Help me to get an IC

Discussion in 'Electronics Resources' started by Santhakumar, Mar 17, 2015.

  1. Santhakumar

    Thread Starter Member

    Mar 17, 2015
    33
    0
  2. MCU88

    Member

    Mar 12, 2015
    360
    35
    Hello...

    I am not quite sure what you want me to help you with... Can you elaborate a bit more on what it is that you want. Please add in requirements analysis and specifications for your project too.

    Easy greasy...
     
  3. Santhakumar

    Thread Starter Member

    Mar 17, 2015
    33
    0
    Hi MCU88,

    I will put this way..
    Consider output load.. To feed power to load, i have two input power rails (5v and 3.3v). load requires only 1.8v. so i can use a LDO to get 1.8v from either 3.3v or 5v.

    At given time, IC i yet to be chosen s'd proceed any one rail (3.3v or 5v) to load, depends on input i'm giving through control I/P..

    Hope u would get my point..
     
  4. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    If only one power rail exists at any any time, 2 diodes would be the simple answer.
    If you have both and want to switch, then 2 transistors are needed, ideally MOSFETS. Plus a controlling circuit. The diodes will still be needed.
     
  5. Brevor

    Active Member

    Apr 9, 2011
    279
    54
    SPDT relay ?
     
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