Regulator · TO-220 / SOT-223 variants

LM317 Adjustable Voltage Regulator

LM317 is an adjustable linear voltage regulator commonly used to build simple variable power supplies.

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Quick Facts

  • Adjustable regulator
  • Output range typically starts around 1.25 V
  • Used for voltage regulation
  • Verify input voltage, output current, dropout, and thermal limits.

Pinout / Lead Arrangement

1
Ayar
2
Output
3
Input

TO-220 Technical Information

LM317 123 ADJOUTIN
ⓘ Note: Review technical details, limits, and application notes in the manufacturer datasheet.
1 Ayar ADJ2 Output OUT3 Input IN

Always verify the lead arrangement in the package-specific datasheet before connecting the component.

Where it is used

  • Regulated power supplies
  • Battery-powered circuits
  • Battery-powered circuits
  • Embedded-system power rails

Equivalent / Related parts

Shareable Knowledge Cards

📘Quick Facts

Review LM317 technical details, limits, and application notes in the manufacturer datasheet.

🔬Engineering Tip

Review LM317 technical details, limits, and application notes in the manufacturer datasheet.

Important notes

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