Vbias of LDO

Discussion in 'General Electronics Chat' started by Pitsa, Aug 19, 2011.

  1. Pitsa

    Thread Starter New Member

    Aug 18, 2011
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    I have question about Vbias of some LDO. in the gerneral idea what is the benefit of Vbias? efficiency improvement or control purpose?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Vbias is what powers the control circuit of the LDO regulator.
    Without Vbias, the regulator won't work.
     
  3. iONic

    AAC Fanatic!

    Nov 16, 2007
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    I didn't know that. Good question Pitsa and nice answer Sgt.
     
  4. #12

    Expert

    Nov 30, 2010
    16,343
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    Yeah, it's kind of like, "What is the benefit of gasoline in a car?" It won't run without gas (Vbias).
     
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