Difference between LM336 and 2.5Volt Zener?

Discussion in 'General Electronics Chat' started by picstudent, Mar 6, 2009.

  1. picstudent

    Thread Starter Active Member

    Feb 3, 2009
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    How a LM336 which is a 2.5V reference differs from a Zener diode in application design or performance.
    As far as I understand both are wired in the same manner.

    Only more precision or more current sinking ?

    Thanks
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    The LM336 has a better temperature stability than a standard zener.
    Just take a look at the datasheet.

    Greetings,
    Bertus
     
  3. picstudent

    Thread Starter Active Member

    Feb 3, 2009
    76
    0
    Got it. More stability, accuracy than Zener, but cant handle more current swings. So only used for reference were current drain very less.
    maximum current only 20ma, whereas 1/4 Zener can take upto 100ma.
    That much clear.
    Thank you.
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    On top of all that, it is programmable, which means it will adjust to any value 2.5V and up. This is a big deal, as zeners aren't that accurate (±5%). Some of the LED regulators can really use this kind of accuracy.
     
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