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Negative voltage: An output using 3 terminal regulator positive input

Latest Updated:12/01/2011

Question:

For a 3-terminal regulator, can a negative voltage be output when a positive voltage is input?

Answer:

Yes, it can.
The output that can be obtained differs depending on the circuit configuration, as follows.

  • Output voltage lower than input voltage (step down)
  • Output voltage higher than input voltage (step up)
  • Output voltage that has reverse polarity to input voltage (inverted)
Suitable Products
Power Management Linear