LM78M05 - What is input range?

Discussion in 'General Electronics Chat' started by zero_coke, Mar 1, 2013.

  1. zero_coke

    Thread Starter Active Member

    Apr 22, 2009
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    I can't seem to find the info for the input DC voltage for this regulator. Can it take 12V DC?
     
  2. #12

    Expert

    Nov 30, 2010
    16,318
    6,818
    35 V = limit
     
  3. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    It can take 35V max, but it gets warm with a 12VDC input.

    9V or so generates least heat and above dropout voltage.

    If your load is going to be over 500mA, or your input voltage higher than 20V continually, you may want to look at a switching regulator.
     
  4. zero_coke

    Thread Starter Active Member

    Apr 22, 2009
    294
    1
    Ok thanks. My DC Power supply is 12V so I didn't want to make an additional regulator for this IC since it already has an LM78M05 that feeds it 5V and I just wanted to make sure if I needed to drop the 12V to 9V and then feed it to the LM78M05 or just feed it directly 12V.
     
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