component

LM317DCYR-JSM

Public Made by Adom

by adom

JSMSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM317DCYR-JSM

JSMSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

LM317DCYR-JSM from JSMSEMI, in a SOT-223. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 ADJUST input Adjust pin that sets the output voltage through the R1/R2 divider (VOUT = VREF x (1+R2/R1) + IADJ x R2, VREF 1.20 to 1.30 V), with adjust pin current typically 50 µA and 100 µA max.
2 OUTPUT power_out Regulated output, adjustable from 1.25 V to 37 V and supplying over 1 A, with internal short-circuit and over-temperature protection.
3 INPUT power_in Unregulated supply input, where the input-to-output voltage difference (Vin-Vout) must not exceed 37 V.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOT-223
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LM317DCYR-JSM
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: lm317dcyr-jsm-etched.step / lm317dcyr-jsm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm317dcyr-jsm.step / lm317dcyr-jsm.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: JSMSEMI datasheet (8 pp, sha256 07e6916234059f3d, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF