LM217T-DG

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm217t-dg",
  "title": "LM217T-DG",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "LM217T-DG",
    "manufacturer": "STMicroelectronics",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/lm217t-dg.pdf",
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      "lcsc": "C2919727",
      "digikey": "497-12820-5-ND",
      "mouser": "511-LM217T-DG"
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    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
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        "lifecycle": "Active"
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    },
    "pins": [
      {
        "number": "1",
        "name": "ADJUST",
        "type": "passive",
        "description": "Adjustment terminal that sets the output voltage via the resistor divider, with a 1.25 V reference between OUTPUT and ADJUST and IADJ of 100 µA max."
      },
      {
        "number": "2",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated output terminal (1.2 to 37 V adjustable, over 1.5 A), also connected internally to the metal tab."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated input terminal, with the input-to-output differential limited to 40 V maximum."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Figure 1 labels the TO-220 leads INPUT, OUTPUT, ADJUST from top to bottom but prints no pin numbers.; LM217T-DG is the TO-220 double-gauge variant (Table 6), whose pinout matches the single-gauge TO-220",
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        "pages_sent": 34,
        "cost_usd": 0.2508,
        "at": "2026-10-27T01:44:44"
      },
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/lm217t-dg.pdf",
        "pages": 34,
        "sha256": "22e0a613ceff898c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          4.455,
          28.525
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        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-220",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
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          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.02,
          "conditions": "VI - VO = 3 to 40 V, TJ = 25°C",
          "source_page": 5,
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        {
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          "max": 15,
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        {
          "name": "Load regulation VO ≥ 5 V",
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        {
          "name": "Adjustment pin current",
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        {
          "name": "Adjustment pin current change",
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        },
        {
          "name": "Reference voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.25,
          "max": 1.3,
          "conditions": "VI - VO = 2.5 to 40 V, IO = 10 mA to IMAX, PD ≤ PMAX",
          "source_page": 5,
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        },
        {
          "name": "Minimum load current",
          "symbol": "IO(min)",
          "kind": "electrical",
          "unit": "mA",
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          "typ": 3.5,
          "max": 5,
          "conditions": "VI - VO = 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum load current",
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          "kind": "electrical",
          "unit": "A",
          "min": 1.5,
          "typ": 2.2,
          "max": null,
          "conditions": "VI - VO ≤ 15 V, PD < PMAX",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection, CADJ = 10 µF",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": 66,
          "typ": 80,
          "max": null,
          "conditions": "TJ = 25°C, f = 120 Hz, CADJ = 10 µF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input-reference differential voltage",
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          "typ": null,
          "max": 40,
          "conditions": "",
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        },
        {
          "name": "Operating junction temperature (LM217)",
          "symbol": "TOP",
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          "unit": "°C",
          "min": -25,
          "typ": null,
          "max": 150,
          "conditions": "LM217",
          "source_page": 3,
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        {
          "name": "Storage temperature",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature stability",
          "symbol": "ΔVO/VO",
          "kind": "temperature_coefficient",
          "unit": "%",
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          "typ": 1,
          "max": null,
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          "source_page": 5,
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        },
        {
          "name": "Maximum load current at 40 V",
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          "unit": "A",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "VI - VO = 40 V, PD < PMAX, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage (percentage of VO)",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.003,
          "max": null,
          "conditions": "B = 10 Hz to 100 kHz, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection, CADJ = 0",
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          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "TJ = 25°C, f = 120 Hz, CADJ = 0",
          "source_page": 5,
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        },
        {
          "name": "Thermal resistance junction-ambient (TO-220)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "TO-220",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Thermal resistance junction-case (TO-220)",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
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          "typ": 5,
          "max": null,
          "conditions": "TO-220",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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