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Do you have to place the input and output capacitors on LOAD basis or the capacitors specified in the datasheet. I have a linear power supply that supplies 16 Volts with no load. The maximum load I want to apply to this regulator would be less than 2A and maximum Voltage, 9 Volts. I just need to know what values of capacitors to use. My supply does have a 4700uF filter capacitor but it is around 2 feet away. I want to make this regulator in separate box.

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    \$\begingroup\$ The datasheet is pretty clear, go with what it recommends. \$\endgroup\$
    – John D
    Dec 30, 2016 at 5:41

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In case there are instances where there will be no load OR if load is disconnected, consider the following.

A 250-Ω feedback resistor between OUTPUT and ADJUST consumes the worst case minimum load current of 5 mA

Regarding the capacitor, go with the datasheet spec. atleast for input voltage:

CIN: 0.1 μF of input capacitance helps filter out unwanted noise, especially if the regulator is located far from the power supply filter capacitors.

Output capacitor is optional:

COUT: The regulator is stable without any output capacitance, but adding a 1-μF capacitor improves the transient response.

certain values of external capacitance can cause excessive ringing. This occurs with values between 500 pF and 5000 pF. A 1-μF solid tantalum (or 25-μF aluminum electrolytic) on the output swamps this effect and insures stability.

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Finally, 14 W of heat is dissipated, which is okay for the device. But, consider it wisely.

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  • \$\begingroup\$ As this is a NPN pass element design, ceramics could very probably be used here with no ill effects. \$\endgroup\$ Dec 30, 2016 at 13:46

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