main
Ray tl431libidbzr: specified limits as data (metadata.characteristics, 22 rows from the datasheet) 6bdd50e 25d ago
{
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  "slug": "tl431libidbzr",
  "title": "TL431LIBIDBZR",
  "brief": "Texas Instruments Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl431li",
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    "distributor_links": {
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    "pins": [
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        "number": "1",
        "name": "CATHODE",
        "type": "bidirectional",
        "description": "Adjustable output voltage terminal ranging from Vref (≈2.495 V) to 36 V with continuous sink current of 1-15 mA."
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      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference input terminal referenced to anode, maximum input current -5 to 10 mA, for feedback-based voltage regulation."
      },
      {
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        "pages_sent": 37,
        "cost_usd": 0.3435,
        "at": "2026-09-23T23:02:00"
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        "url": "https://www.ti.com/cn/lit/gpn/tl431li",
        "pages": 37,
        "sha256": "c40e9bce255918a9",
        "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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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
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    "characteristics": {
      "version": 1,
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      "rows": [
        {
          "name": "Reference voltage (B grade, 0.5%)",
          "symbol": "Vref",
          "kind": "tolerance",
          "unit": "mV",
          "min": 2483,
          "typ": 2495,
          "max": 2507,
          "conditions": "VKA = Vref, IKA = 1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage deviation over temperature range (I grade)",
          "symbol": "VI(dev)",
          "kind": "tolerance",
          "unit": "mV",
          "min": null,
          "typ": 6,
          "max": 17,
          "conditions": "VKA = Vref, IKA = 1mA; TL43xLIxI device",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage change ratio to cathode voltage change",
          "symbol": "ΔVref/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1.4,
          "max": -2.7,
          "conditions": "IKA = 1mA, ΔVKA = 10V - Vref",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Reference voltage change ratio to cathode voltage change",
          "symbol": "ΔVref/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2,
          "conditions": "IKA = 1mA, ΔVKA = 36V - 10V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference input current",
          "symbol": "Iref",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "IKA = 1mA, R1 = 10kΩ, R2 = ∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference input current deviation over temperature range",
          "symbol": "II(dev)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 0.3,
          "conditions": "IKA = 1mA, R1 = 10kΩ, R2 = ∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum regulation cathode current",
          "symbol": "Imin",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VKA = Vref",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VKA = 36V, Vref = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "|ZKA|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.3,
          "max": 0.65,
          "conditions": "VKA = Vref, IKA = 1mA to 15mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage (absolute maximum)",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 37,
          "conditions": "All voltages referenced to ANODE",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current range (absolute maximum)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference input current (absolute maximum)",
          "symbol": "II(ref)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Storage temperature range (absolute maximum)",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Cathode voltage (recommended)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "Minimum is printed as VREF (about 2.495 V), not a numeric value",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current range (recommended)",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Free-air operating temperature (I grade)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "TL43xLIxI device, natural convection",
          "source_page": 4,
          "source": "datasheet"
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          "min": null,
          "typ": 371.7,
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          "typ": 145.9,
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          "typ": 104.7,
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        {
          "name": "Junction-to-top characterization parameter",
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          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 23.9,
          "max": null,
          "conditions": "DBZ (3 pin) package",
          "source_page": 4,
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        {
          "name": "Junction-to-board characterization parameter",
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          "unit": "C/W",
          "min": null,
          "typ": 102.9,
          "max": null,
          "conditions": "DBZ (3 pin) package",
          "source_page": 4,
          "source": "datasheet"
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