main
Ray Set visibility: public bcf39d3 14d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm317lg-s08-r",
  "title": "LM317LG-S08-R",
  "brief": "UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. 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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  "component": {
    "mpn": "LM317LG-S08-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175142477512704",
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      "lbr": "lm317lg-s08-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C75511"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T20:41:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply pin; the input-output differential voltage (VIN-VOUT) must not exceed the 40 V absolute maximum."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output pin, rated for output current up to 100 mA with output adjustable from 1.25 V to 37 V."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output pin, rated for output current up to 100 mA with output adjustable from 1.25 V to 37 V."
      },
      {
        "number": "4",
        "name": "ADJ",
        "type": "passive",
        "description": "Adjust pin, where the 1.25 V reference is developed; adjust pin current IADJ is typically 50 µA and at most 100 µA, and an optional CADJ connects from this pin to ground."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection, as marked N in the ordering table pin assignment for SOP-8."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output pin, rated for output current up to 100 mA with output adjustable from 1.25 V to 37 V."
      },
      {
        "number": "7",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output pin, rated for output current up to 100 mA with output adjustable from 1.25 V to 37 V."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection, as marked N in the ordering table pin assignment for SOP-8."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet has no package drawing with numbered pins. The SOP-8 pin mapping comes from the orderi; The ADJ pin type (passive) and the KiCad classes for VOUT (power_out) and NC (unconnected) are my cl; The datasheet names the package SOP-8, not SOIC-8. The ordering number LM317LG-S08-R maps to SOP-8, "
        ],
        "pages_sent": 5,
        "cost_usd": 0.0236,
        "at": "2026-10-20T20:39:10"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175142477512704",
        "pages": 5,
        "sha256": "28d251dfd5958ec9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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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,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "sha256": "e6e532b03f0952133a665a5c61536ca3d68df628e5a0ceec5a6669b90d0e5a32",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UTC Unisonic Tech",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "28d251dfd5958ec9c0f15a0b9709ef5f0bc4969de81fce541380f132155ed685",
      "rows": [
        {
          "name": "Input-Output Differential Voltage",
          "symbol": "VIN-VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TOPR",
          "kind": "recommended_operating",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTR",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "VOUT/VOUT",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.04,
          "conditions": "3V≦VIN-VOUT≦40V, ILOAD<20mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation (VOUT≦5V)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 25,
          "conditions": "5mA≦IOUT≦100mA, VOUT≦5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation (VOUT≧5V)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "5mA≦IOUT≦100mA, VOUT≧5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Adjustable Pin Current",
          "symbol": "IADJ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Adjustable Pin Current Change",
          "symbol": "IADJ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.2,
          "max": 5,
          "conditions": "3V≦VIN-VOUT≦40V, 5mA≦IOUT≦100mA, PD<625mW",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.25,
          "max": 1.3,
          "conditions": "3V≦VIN-VOUT≦40V, 5mA≦IOUT≦100mA, PD<625mW",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Load Current for Regulation",
          "symbol": "IL(MIN)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.5,
          "max": 10,
          "conditions": "VIN-VOUT=40V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RMS Noise vs. % of VOUT",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "%/VOUT",
          "min": null,
          "typ": 0.003,
          "max": 0.01,
          "conditions": "10HZ≦f≦10KHZ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection (CADJ=10µF)",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 66,
          "max": 80,
          "conditions": "VOUT=10V, f=120HZ, CADJ=10F",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature Stability",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "%/VOUT",
          "min": null,
          "typ": 0.7,
          "max": null,
          "conditions": "TMIN≦TJ≦TMAX",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "IO(MAX)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "VIN-VOUT<40V, PD<625mW",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection (CADJ=0)",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "CADJ=0",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "LM317LG-S08-R (UTC Unisonic Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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