main
Ray Set visibility: public bdbf3ef 7h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm2937impx-12",
  "title": "LM2937IMPX-12",
  "brief": "Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lm2937impx-12",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM2937IMPX-12",
    "manufacturer": "Texas Instruments",
    "package": "SOT-223-4",
    "pin_count": 4,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm2937.pdf",
    "parts": {
      "symbol": "lm2937impx-12.kicad_sym",
      "footprint": "lm2937impx-12.kicad_mod",
      "model_3d": "lm2937impx-12-hero.glb",
      "model_3d_plain": "lm2937impx-12-etched.glb",
      "model_3d_step": "lm2937impx-12-etched.step",
      "model_3d_step_plain": "lm2937impx-12.step",
      "lbr": "lm2937impx-12.lbr"
    },
    "distributor_links": {
      "lcsc": "C2865816",
      "digikey": "LM2937IMPX-12-ND",
      "mouser": "926-LM2937IMPX-12"
    },
    "distributor_check": {
      "checked_at": "2026-11-06T00:02:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM2937IMPX-12-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "926-LM2937IMPX-12",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "input",
        "description": "Unregulated voltage input; the recommended input range is VOUT + 1 V to 26 V, with 60 V transient protection."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "output",
        "description": "Regulated voltage output that requires an output capacitor to maintain stability, with ESR stable below 3 Ω."
      },
      {
        "number": "4",
        "name": "TAB",
        "type": "power_in",
        "description": "Thermal and ground connection internally tied to device pin 2 (GND); connect to GND or leave floating and do not connect to any other potential."
      }
    ],
    "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": [],
        "pages_sent": 10,
        "cost_usd": 0.0144,
        "at": "2026-11-06T00:02:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm2937.pdf",
        "pages": 35,
        "sha256": "de6b9175f075271f",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm2937impx-12.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          6.5,
          1.7
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm2937impx-12-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          6.5,
          1.7
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e83fda35e717d52b853b9d20d45116680ef6c920d09ac64dc97da712310e0551",
        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-223-4",
      "Category": "Power Management (PMIC)",
      "Pins": "4"
    },
    "appearance": {
      "contacts": {
        "quote": "is practical to the package. The ground connections for CIN and COUT should be back to the LM2937 ground pin using as wide, and as short, of a copper trace as is practical.",
        "page": 18,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "de6b9175f075271f9994f6281dc875ba0d11eb921b36cf3badb4c906f96bf062"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "de6b9175f075271f9994f6281dc875ba0d11eb921b36cf3badb4c906f96bf062",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 11.64,
          "typ": 12,
          "max": 12.36,
          "conditions": "TA = TJ = 25°C, 5 mA ≤ IOUT ≤ IOUT(MAX)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 11.4,
          "typ": 12,
          "max": 12.6,
          "conditions": "5 mA ≤ IOUT ≤ IOUT(MAX)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDROPOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.5,
          "max": 1,
          "conditions": "IOUT = IOUT(MAX)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDROPOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 110,
          "max": 250,
          "conditions": "IOUT = 50 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 36,
          "max": 120,
          "conditions": "(VOUT + 2V) ≤ VIN ≤ 26V, IOUT = 5 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 12,
          "max": 120,
          "conditions": "5 mA ≤ IOUT ≤ IOUT(MAX)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "(VOUT + 2V) ≤ VIN ≤ 26V, IOUT = 5 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "VIN = (VOUT + 5V), IOUT = IOUT(MAX)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.6,
          "max": 1,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak line transient voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 60,
          "max": 75,
          "conditions": "tf < 100 ms, RL = 100 Ω",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum operational input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 26,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Reverse DC input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -15,
          "max": -30,
          "conditions": "VOUT ≥ -0.6 V, RL = 100 Ω",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Reverse transient input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -50,
          "max": -75,
          "conditions": "tr < 1 ms, RL = 100 Ω",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature (LM2937IMP, DCY)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Recommended operating free-air temperature range, DCY (SOT-223) package",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 26,
          "conditions": "VOUT + 1 V ≤ VIN ≤ 26 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor",
          "symbol": "COUT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "Minimum capacitance over full expected operating temperature range",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Input voltage continuous",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 26,
          "conditions": "Continuous",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage transient",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "t ≤ 100 ms",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 58.3,
          "max": null,
          "conditions": "DCY (SOT-223), 4 pins",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (bottom) thermal resistance",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 22.5,
          "max": null,
          "conditions": "DCY (SOT-223), 4 pins",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 39.2,
          "max": null,
          "conditions": "DCY (SOT-223), 4 pins",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm2937impx-12"
  ],
  "discovery_pitch": "LM2937IMPX-12 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm2937impx-12.kicad_sym",
    "lm2937impx-12.kicad_mod",
    "lm2937impx-12.glb",
    "lm2937impx-12.step",
    "lm2937impx-12.lbr",
    "docs/hero.png",
    "docs/lm2937impx-12-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm2937impx-12-hero.glb",
    "lm2937impx-12-hero.overlay.json",
    "lm2937impx-12-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}