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LM317 - 3-Terminal Adjustable Regulator

General Description

The LM317 is an adjustable three-pin, positive-voltage regulator capable of supplying more than 1.5A over an output voltage range of 1.25V to 37V.

The device requires only two external resistors to set the output voltage.

Key Features

  • Output voltage range:.
  • Adjustable: 1.25V to 37V.
  • Output current: 1.5A.
  • Line regulation: 0.01%/V (typ).
  • Load regulation: 0.1% (typ).
  • Internal short-circuit current limiting.
  • Thermal overload protection.
  • Output safe-area compensation (new chip).
  • PSRR: 80dB at 120Hz for CADJ = 10μF (new chip).
  • Packages:.
  • 4-pin, SOT-223 (DCY).
  • 3-pin, TO-263 (KTT).
  • 3-pin, TO-220 (KCS, KCT), legacy chi.

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Other Datasheets by Texas Instruments

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM317 SLVS044Z – SEPTEMBER 1997 – REVISED APRIL 2025 LM317 3-Pin Adjustable Regulator 1 Features • Output voltage range: – Adjustable: 1.25V to 37V • Output current: 1.5A • Line regulation: 0.01%/V (typ) • Load regulation: 0.1% (typ) • Internal short-circuit current limiting • Thermal overload protection • Output safe-area compensation (new chip) • PSRR: 80dB at 120Hz for CADJ = 10μF (new chip) • Packages: – 4-pin, SOT-223 (DCY) – 3-pin, TO-263 (KTT) – 3-pin, TO-220 (KCS, KCT), legacy chip 2 Applications • Multifunction printers • AC drive power stage modules • Electricity meters • Servo drive control modules • Merchant network and server PSU VIN ¤ 28V VIN LM317 VOUT ADJ C1* 0.