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LM317: Could you tell me about the numbers of LM317's external parts?

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Part Number:LM317

Hi, team.

My customer is considering power supply with the following specifications.

Input Voltage: 20 V

Output Voltage: 15 V

Output Current: ~ 0.5 A

Target: About $0.18

My customer don't want to attach external parts as as possible.

I am planning to promotion the LM317,Looking at the data sheet, there is a fear that there will be more external parts.

<Question>

When that consider a circuit that merely generates the voltage of the above specifications,is the minimum necessary external parts only the under parts?

· Input capacitor

· Output capacitor

· Two FB resistors

Best regards,

Masumi Sekiguchi


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