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Is a capacitor necessary at input and output of a 3-terminal regulator?

Latest Updated:11/01/2007

Question:

Is a capacitor necessary at the input side and output side of a 3-terminal regulator?

Answer:

Yes.
The low-saturation regulator and negative output regulator are likely to oscillate depending on the capacitance and type of the capacitor. Therefore, be sure to use the capacitor introduced in the Data Sheet. As the input capacitor, the one with good temperature characteristics and frequency characteristics is recommended.
Suitable Products
Bipolar Operational Amplifiers
3 Terminal Regulators