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LM317 - 3-Terminal Adjustable Regulator

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.

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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Datasheet preview – LM317

Datasheet Details

Part number LM317
Manufacturer Texas Instruments
File Size 2.07 MB
Description 3-Terminal Adjustable Regulator
Datasheet download datasheet LM317 Datasheet
Additional preview pages of the LM317 datasheet.

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Full PDF Text Transcription

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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.
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