component

LM4431M3-2.5

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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lm4431m3-2-5-etched.glb lm4431m3-2-5: factory component page (tier=lcsc) · Ray 1d ago
lm4431m3-2-5-etched.step lm4431m3-2-5: factory component page (tier=lcsc) · Ray 1d ago
lm4431m3-2-5-hero.glb lm4431m3-2-5: hero GLB from the etched model (keeps the MPN mark) · Ray 19h ago
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README.md Initial commit: component/lm4431m3-2-5 · Ray 1d ago

LM4431M3-2.5

Texas Instruments · Voltage Reference · SOT-23

LM4431M3-2.5 from Texas Instruments, in a SOT-23. 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 + passive The "+" terminal of the 2.5 V shunt reference, which sets a reverse breakdown voltage of 2.500 V typical at IR = 100 µA; the operating current range is 100 µA to 15 mA.
2 − passive The "−" terminal of the shunt reference, which the datasheet identifies as the cathode-side reference for the parasitic Schottky diode to pin 3; the operating reverse current is 100 µA to 15 mA and the forward current limit is 10 mA.
3 NC (die attach interface contact) unconnected Die attach interface contact with a parasitic Schottky diode to pin 2; it must be left floating or connected to pin 2.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LM4431M3-2.5
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4431m3-2-5-etched.step / lm4431m3-2-5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4431m3-2-5.step / lm4431m3-2-5.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (16 pp, sha256 aae3a4af89708708, retrieved 2026-10-07, tier: lcsc)
  • 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