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LM317K-TQ2-R

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UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-263-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icslm317k-tq2-rfactory-2.0.0extractor-text

Verified LM317K-TQ2-R

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM317K-TQ2-R · TO-263-2 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 5-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-263-2
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-979f70x5/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm317k-tq2-r.kicad_sym✓ lm317k-tq2-r.kicad_mod✓ lm317k-tq2-r.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers lm317k-tq2-r: viewers · Ray 1d ago
lm317k-tq2-r-etched.glb Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r-etched.step lm317k-tq2-r: factory component page (tier=mfr) · Ray 1d ago
lm317k-tq2-r-hero.glb lm317k-tq2-r: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
lm317k-tq2-r-hero.overlay.json Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r.glb Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r.kicad_mod Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r.kicad_sym Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r.lbr Publish 0.1.0 · Ray 1d ago
lm317k-tq2-r.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 1d ago

LM317K-TQ2-R

UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · TO-263-2

LM317K-TQ2-R from UTC(Unisonic Tech), in a TO-263-2. 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 ADJ passive Adjust pin sets the output voltage through the external divider, with adjustable pin current of 50 µA typical and 100 µA maximum, and CADJ is connected between this pin and ground for ripple rejection.
2 VOUT power_out Regulated output, adjustable from 1.3 V to 37 V, supplying output current in excess of 1 A.
3 VIN power_in Unregulated input supply, with the input-to-output voltage difference limited to 40 V absolute maximum and regulation specified for 3 V ≤ VIN-VOUT ≤ 40 V.

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
Package TO-263-2
Category Power Management ICs
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Line Regulation VOUT/VOUT 0.01 0.04 %/V 3V≦VIN-VOUT≦40V 3
Line Regulation 5 25 mV VOUT≦5V 3
Load Regulation VOUT 0.1 0.5 % 10mA≦IOUT≦1A, VOUT≧5V 3
Adjustable Pin Current IADJ 50 100 μA 3
Adjustable Pin Current Change IADJ 0.2 5 μA 3V≦VIN-VOUT≦40V, 10mA≦IOUT≦1A, PD≦20W 3
Reference Voltage VREF 1.2 1.25 1.3 V 3V≦VIN-VOUT≦40V, 10mA≦IOUT≦1A, PD≦20W 3
Minimum Load Current for Regulation IL(MIN) 3.5 10 mA VIN-VOUT=40V 3
Maximum Output Current IO(MAX) 0.2 0.3 A VIN-VOUT=40V, PD≦20W 3
Ripple Rejection RR 66 80 dB VOUT=10V,f=120HZ CADJ=10μF 3
Input - Output Voltage Difference VIN-VOUT 40 V 3
Junction Temperature TJ 125 C 3
Operating Temperature TOPR -40 85 C 3
Storage Temperature TSTG -40 150 C 3
Junction-to-Ambient Thermal Resistance θJA 65 C/W TO-263/TO-263-3 package 3
Junction-to-Case Thermal Resistance θJC 5 C/W TO-263 package 3

CAD (KiCad official)

  • Symbol: LM317K-TQ2-R
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-2 (KiCad packages3D, STEP)
  • 3D model files: lm317k-tq2-r-etched.step / lm317k-tq2-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm317k-tq2-r.step / lm317k-tq2-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (5 pp, sha256 14286ff814b58d10, retrieved 2026-11-05, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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