main
Ray Set visibility: public f8382ad 16d ago
{
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  "type": "component",
  "slug": "lm317dcyr-hxy",
  "title": "LM317DCYR-HXY",
  "brief": "HXY MOSFET Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "LM317DCYR-HXY",
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    "package": "SOT-223",
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    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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    "distributor_links": {
      "lcsc": "C19626994"
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    "distributor_check": {
      "checked_at": "2026-10-19T08:13:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
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      "mouser": {
        "pn": null,
        "status": "no match"
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    "pins": [
      {
        "number": "1",
        "name": "ADJ",
        "type": "passive",
        "description": "Adjust pin tied to the internal reference; the datasheet gives reference voltage VREF 1.20 to 1.30 V (1.25 V typ) and adjustable pin current IADJ of 46 µA typ and 100 µA max."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output, adjustable over 1.2 to 37 V and supplying more than 1.5 A of load current, with a maximum output current IO(MAX) of 1.0 A min or 2.2 A typ at TA=25°C per the datasheet table."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin; the input-output differential VI-VO must stay within 3 V to 40 V, with 40 V as the absolute maximum input-output differential."
      }
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    "provenance": {
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      "factory_chain": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin table text lists the numbers 1, 2, 3 and the names ADJ, Input Voltage, Output Voltage in a s; Datasheet covers SOT-223 only, so this pinout applies to the SOT-223 variant named in the hint. The "
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        "pages_sent": 4,
        "cost_usd": 0.0375,
        "at": "2026-10-19T08:10:59"
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        "pages": 4,
        "sha256": "9d4e7e1a83aa0259",
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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,
        "centre_offset_mm": 0,
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        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-19",
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  "metadata": {
    "specs": {
      "Manufacturer": "HXY MOSFET",
      "Package": "SOT-223",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
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    "characteristics": {
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          "name": "Line Regulation (TA=25℃)",
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          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.04,
          "conditions": "TA=25℃, 3V≤VI-VO≤40V",
          "source_page": 2,
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        {
          "name": "Line Regulation (over temperature)",
          "symbol": "Rline",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.02,
          "max": 0.07,
          "conditions": "3V≤VI-VO≤40V",
          "source_page": 2,
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        },
        {
          "name": "Load Regulation (VO<5V, TA=25℃)",
          "symbol": "Rload",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 18,
          "max": 25,
          "conditions": "TA=25℃, 10mA≤IO≤IMAX, VO<5V",
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        {
          "name": "Load Regulation (VO≥5V, TA=25℃)",
          "symbol": "Rload",
          "kind": "electrical",
          "unit": "%VO",
          "min": null,
          "typ": 0.4,
          "max": 0.5,
          "conditions": "TA=25℃, 10mA≤IO≤IMAX, VO≥5V",
          "source_page": 2,
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        {
          "name": "Load Regulation (VO<5V, over temperature)",
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          "typ": 40,
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          "name": "Load Regulation (VO≥5V, over temperature)",
          "symbol": "Rload",
          "kind": "electrical",
          "unit": "%VO",
          "min": null,
          "typ": 0.8,
          "max": 1.5,
          "conditions": "10mA≤IO≤IMAX, VO≥5V",
          "source_page": 2,
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        },
        {
          "name": "Adjustable Pin Current",
          "symbol": "IADJ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 46,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Adjustable Pin Current Change",
          "symbol": "ΔIADJ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2,
          "max": 5,
          "conditions": "3V≤VI-VO≤40V, 10mA≤IO≤IMAX, PD≤PMAX",
          "source_page": 2,
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        },
        {
          "name": "Reference Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.25,
          "max": 1.3,
          "conditions": "3V≤VIN-VO≤40V, 10mA≤IO≤IMAX, PD≤PMAX",
          "source_page": 2,
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        },
        {
          "name": "Minimum Load Current to Maintain Regulation",
          "symbol": "IL(MIN)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.5,
          "max": 12,
          "conditions": "VI-VO=40V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RMS Noise, % of VOUT",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "%/ VO",
          "min": null,
          "typ": 0.003,
          "max": 0.01,
          "conditions": "TA=25℃, 10Hz≤f≤10KHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Long-Term Stability",
          "symbol": "ST",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.3,
          "max": 1,
          "conditions": "TJ=THIGH; TA=25℃ for end point measurements, 1000HR",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input-Output Voltage Differential",
          "symbol": "VI-VO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
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        },
        {
          "name": "Lead Temperature",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 230,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature Coefficient of Output Voltage",
          "symbol": "ΔVO/ΔT",
          "kind": "temperature_coefficient",
          "unit": "%/℃",
          "min": -0.02,
          "typ": null,
          "max": 0.02,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Case",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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