LMV431AIM5X

{
  "schema_version": 1,
  "type": "component",
  "slug": "lmv431aim5x",
  "title": "LMV431AIM5X",
  "brief": "Texas Instruments Voltage Reference, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "lmv431aim5x"
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  "component": {
    "mpn": "LMV431AIM5X",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lmv431aim5x.pdf",
    "parts": {
      "symbol": "lmv431aim5x.kicad_sym",
      "footprint": "lmv431aim5x.kicad_mod",
      "model_3d": "lmv431aim5x-etched.glb",
      "model_3d_plain": "lmv431aim5x.glb",
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      "model_3d_step_plain": "lmv431aim5x.step",
      "lbr": "lmv431aim5x.lbr"
    },
    "distributor_links": {
      "digikey": "LMV431AIM5X-ND"
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating on the PCB."
      },
      {
        "number": "2",
        "name": "NC/Anode",
        "type": "unconnected",
        "description": "Internally connected to the Anode die pad. Should be either left floating or tied to the Anode pin (pin 5) on the board."
      },
      {
        "number": "3",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode terminal of the shunt regulator. Sinks the regulated shunt current (0.1-15 mA operating, 30 mA abs max) to hold the programmed voltage (VREF up to 30 V abs max, 35 V absolute). Acts like the cathode of a programmable Zener."
      },
      {
        "number": "4",
        "name": "Ref",
        "type": "input",
        "description": "Reference / feedback input to the internal error amplifier. Compared against the internal 1.24 V band-gap reference; a two-resistor divider from Cathode to Anode sets the regulated cathode voltage. Reference input current ≈ 0.15 µA typ (0.5 µA max)."
      },
      {
        "number": "5",
        "name": "Anode",
        "type": "passive",
        "description": "Anode terminal of the shunt regulator; returns cathode shunt current. Typically tied to circuit ground (or the low-side rail of the divider network)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lmv431aim5x.pdf",
        "pages": 41,
        "sha256": "a0a41ad7f82b495a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lmv431aim5x-etched.step",
        "role": "eda",
        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "5ca927228c33dcee8f0fc646ef1a2a4411305698d47a7d8aeb78547856f59744",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "LMV431AIM5X (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
    "page.json",
    "README.md",
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    "lmv431aim5x.step",
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    "docs/lmv431aim5x-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LMV431AIM5X",
      "kind": "packaging"
    },
    {
      "mpn": "LMV431AIM5XIM3",
      "kind": "packaging"
    },
    {
      "mpn": "LMV431AIM5XM3",
      "kind": "packaging"
    },
    {
      "mpn": "LMV431AIM5XZ",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T17:35:30.753Z"
}