LM2931CDR2G

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  "schema_version": 1,
  "type": "component",
  "slug": "lm2931cdr2g",
  "title": "LM2931CDR2G",
  "brief": "onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "lm2931cdr2g"
  ],
  "component": {
    "mpn": "LM2931CDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/lm2931c-d.pdf",
    "parts": {
      "symbol": "lm2931cdr2g.kicad_sym",
      "footprint": "lm2931cdr2g.kicad_mod",
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      "lbr": "lm2931cdr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C133051"
    },
    "pins": [
      {
        "number": "1",
        "name": "Output",
        "type": "power_out",
        "description": "Regulated output. Adjustable from 3.0 V to 24 V, capable of supplying >100 mA with typical dropout of 0.16 V at 100 mA. Requires >=100 uF output capacitor (C_O(ESR) ~0.3 ohm) for stability."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device return. Tied together with pins 3, 6, 7 for the SOIC-8 package (also serves as heat-spreader)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device return. Tied together with pins 2, 6, 7 for the SOIC-8 package (also serves as heat-spreader)."
      },
      {
        "number": "4",
        "name": "Adjust",
        "type": "input",
        "description": "Feedback / adjust pin. The reference voltage (Vref = 1.20 V typ) is developed between Output and Adjust across R1. Adjust-pin current is typically 0.2 uA. Set output with Vout = Vref * (1 + R2/R1) + I_Adj*R2."
      },
      {
        "number": "5",
        "name": "Output Inhibit",
        "type": "input",
        "description": "Active-high shutdown input. Output-off threshold >=2.50 V (25 C), output-on threshold <=1.90 V (25 C). Threshold current ~30 uA typ (50 uA max) at V_th(OI)=2.5 V. Useful for microprocessor-based enable/disable."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device return. Tied together with pins 2, 3, 7 for the SOIC-8 package (also serves as heat-spreader)."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device return. Tied together with pins 2, 3, 6 for the SOIC-8 package (also serves as heat-spreader)."
      },
      {
        "number": "8",
        "name": "Input",
        "type": "power_in",
        "description": "Unregulated supply input. Continuous rating 40 Vdc, transient 60 Vpk (<=100 ms load dump), reverse-polarity transient -50 Vpk. Over-voltage shutdown threshold 29.5 V typ (26 V min)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/lm2931c-d.pdf",
        "pages": 23,
        "sha256": "df9ec9ec42038b2b",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "lm2931cdr2g.step",
        "role": "plain",
        "up": "Z",
        "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": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
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        "sha256": "86dcb7a37686e1c296287bddace6001453888e2f2231990b58efca5f9e28ff45",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "rows": [
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 1,
          "conditions": "IO = 10 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "Continuous",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "LM2931CDR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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    "lm2931cdr2g.step",
    "lm2931cdr2g-etched.step",
    "lm2931cdr2g.lbr",
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    "docs/lm2931cdr2g-datasheet.pdf",
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  "visibility": "public",
  "variants": [
    {
      "mpn": "LM2931CDR2G",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931ACDR2G",
      "kind": "unknown"
    },
    {
      "mpn": "LM2931CDR2GNCV2931CDR2G",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931CDR2GNCV2931ACDR2G",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931CTH",
      "kind": "unknown"
    },
    {
      "mpn": "LM2931CDR2GTH SUFFIX",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931CTV",
      "kind": "unknown"
    },
    {
      "mpn": "LM2931CDR2GTV SUFFIX",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931CT",
      "kind": "unknown"
    },
    {
      "mpn": "LM2931CDR2GT SUFFIX (Case 314D)",
      "kind": "packaging"
    },
    {
      "mpn": "LM2931CD2T",
      "kind": "unknown"
    },
    {
      "mpn": "LM2931CDR2GD2T SUFFIX (Case 936A)",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T16:30:14.134Z",
  "description": "onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "org": "adom"
}