UA78M05QDCYRG4Q1

{
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  "slug": "ua78m05qdcyrg4q1",
  "title": "UA78M05QDCYRG4Q1",
  "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": [
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    "power management (pmic)",
    "ua78m05qdcyrg4q1",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UA78M05QDCYRG4Q1",
    "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/cn/lit/gpn/ua78m-q1",
    "parts": {
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      "lbr": "ua78m05qdcyrg4q1.lbr"
    },
    "distributor_links": {
      "lcsc": "C485570",
      "digikey": "296-22950-2-ND",
      "mouser": "595-UA78M05QDCYRG4Q1"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T15:11:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22950-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UA78M05QDCYRG4Q1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated input pin; connect the recommended 0.33 µF input capacitor from INPUT to COMMON, placed as close to the device as possible, and keep VIN within 7 V to 25 V for the non-M3 UA78M05 (absolute maximum 35 V)."
      },
      {
        "number": "2",
        "name": "COMMON",
        "type": "power_in",
        "description": "Ground (common) pin to which all voltages are referenced; tying it to ground sets the fixed output voltage."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated 5 V output pin; use the recommended 0.1 µF output capacitor placed as close to OUTPUT and COMMON as possible, with output current up to 500 mA."
      },
      {
        "number": "4",
        "name": "COMMON",
        "type": "power_in",
        "description": "Ground (common) pin on the package tab, electrically the same node as pin 2 and to be tied to ground."
      }
    ],
    "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: Table 4-1 lists COMMON as pins 2 and 4 (the table row reads 'COMMON 2.4'), and the figure shows COMM; The datasheet labels INPUT and OUTPUT as type 'I' and 'O'. Power_in/power_out were chosen as the KiC; Variant: UA78M05QDCYRG4Q1 has no M3 suffix in the package addendum (page 21), so it is the non-M3 va"
        ],
        "pages_sent": 28,
        "cost_usd": 0.0987,
        "at": "2026-10-11T15:11:00"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ua78m-q1",
        "pages": 28,
        "sha256": "0c4f53a2312550c4",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "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,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ua78m05qdcyrg4q1-etched.step",
        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ac4573c2560daaab9547fcef14e0e753744b705075754feff62cd5b4948faa34",
        "checked": "2026-10-16",
        "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"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "UA78M05QDCYRG4Q1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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