REG1117A-1.8

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  "slug": "reg1117a-1-8",
  "title": "REG1117A-1.8",
  "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",
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    "mpn": "REG1117A-1.8",
    "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/reg1117a",
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      "model_3d_step_plain": "reg1117a-1-8.step",
      "lbr": "reg1117a-1-8.lbr"
    },
    "distributor_links": {
      "lcsc": "C2872257",
      "digikey": "2156-REG1117A-1.8-ND",
      "mouser": "595-REG1117A-1.8"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T02:16:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-REG1117A-1.8-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-REG1117A-1.8",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the fixed-voltage REG1117A-1.8 (labelled Adj. on the adjustable model)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage of 1.8V; the REG1117A supplies up to 1A max with 1.3V max dropout at IO = 1A."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply; absolute maximum input voltage is +15V and the regulator needs about 1V-1.3V input-output differential for regulation at 1A."
      },
      {
        "number": "4",
        "name": "VOUT (tab)",
        "type": "power_out",
        "description": "Mounting tab, electrically connected to VOUT and used for heat sinking through the board copper; the datasheet gives JA of about 49°C/W with solid backside copper."
      }
    ],
    "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 says the tab is VOUT (page 2 and page 10) but never prints the number 4 next to the ta; Pin numbers 1, 2 and 3 come from Figure 2 on page 8 (VIN=3, VO=2, ADJ=1), not from the connection di; Package naming conflict: the ordering table (page 3) and the thermal and electrical sections call th",
          "1/4 pins cited to the wrong page (name found elsewhere): ['1:GND@p2']"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1057,
        "at": "2026-10-08T02:16:03"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/reg1117a",
        "pages": 23,
        "sha256": "9612deef2bd34399",
        "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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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "file": "reg1117a-1-8-etched.step",
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        "sha256": "b0310216a425a66c36450855cb39198045fd7440c6fda6d547fae8ad87ecae13",
        "checked": "2026-10-08",
        "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"
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "REG1117A-1.8 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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