LTL431ATLT1G

{
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  "type": "component",
  "slug": "ltl431atlt1g",
  "title": "LTL431ATLT1G",
  "brief": "LRC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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  "component": {
    "mpn": "LTL431ATLT1G",
    "manufacturer": "LRC",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/11de3baf98b740a6b13ec3fdd6802c2e.pdf",
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      "lbr": "ltl431atlt1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C83052"
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode (K) terminal. Sinks the regulated current when VKA >= Vref (~2.5V). Absolute maximum VKA = 36V; cathode current range -100 mA to +150 mA continuous; minimum cathode current for regulation IKA(min) typ 0.45 mA, max 1.0 mA. Dynamic impedance typ 0.15 Ω at f <= 1 kHz."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference (R) input. High-impedance sense input to the internal error amplifier compared against the internal 2.5V bandgap reference (Vref typ 2.495-2.50V). Reference input current Iref typ 1.5 µA (max 4 µA) with R1 = 10 kΩ. Output is programmed via VO = (1 + R1/R2) * Vref."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode (A) terminal. Common/ground return for the reference; internal error amplifier and output transistor emitter reference. Typically tied to circuit ground in shunt-regulator configurations."
      }
    ],
    "provenance": {
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      "datasheet": {
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        "pages": 5,
        "sha256": "f72860759bbf8e8d",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "LRC",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f72860759bbf8e8d",
      "rows": [
        {
          "name": "Reference input voltage (rank A, 0.5%, -40 to +125 °C classification)",
          "symbol": "VREF",
          "kind": "tolerance",
          "unit": "V",
          "min": 2.482,
          "typ": null,
          "max": 2.507,
          "conditions": "Classification table; Vref range for LTL431ATLT1 family. Row-to-variant assignment uncertain, see review_required",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "TOPR",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "Absolute maximum table note: operating temperature range applies unless otherwise specified. Printed range is 0 to +70 °C; the T-suffix classification lists -40 to +125 °C, see review_required",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "LTL431ATLT1G (LRC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "visibility": {
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  "variants": [
    {
      "mpn": "LTL431ATLT1GALT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GBLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GAPLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GBPLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GBTLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GAPTLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LTL431ATLT1GBPTLT1G",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T18:16:32.121Z"
}