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Ray Set visibility: public 9ae5fad 8d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ld1117ag-15-aa3-a-r",
  "title": "LD1117AG-15-AA3-A-R",
  "brief": "UTC(Unisonic Tech) Linear Voltage Regulators (LDO), 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 ics",
    "ld1117ag-15-aa3-a-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LD1117AG-15-AA3-A-R",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "SOT-223-4",
    "pin_count": 4,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8df78a8eb2f8d095670f5827599b77fe.pdf",
    "parts": {
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      "footprint": "ld1117ag-15-aa3-a-r.kicad_mod",
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      "lbr": "ld1117ag-15-aa3-a-r.lbr"
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    "distributor_links": {
      "lcsc": "C75481"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T19:26:11Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
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        "name": "GND/ADJ",
        "type": "power_in",
        "description": "Ground reference (GND/ADJ pin; ground on the fixed 1.5V version) for pin code A (G-O-I)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage (1.5V fixed, output current up to 1.0A for the 1117A) for pin code A."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage, recommended 15V maximum and 18V absolute maximum."
      },
      {
        "number": "4",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The package hint says SOT-223-4, but the datasheet drawing and marking diagram show only 3 numbered ; Pin assignment is taken from the ordering code. The '-A-' pin code is G/O/I for pins 1/2/3, with G m",
          "exposed pad 4 added from the footprint",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 15,
        "cost_usd": 0.22,
        "at": "2026-10-30T19:26:04"
      },
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        "pages": 15,
        "sha256": "f7f26a117cb07dc2",
        "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"
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        "file": "ld1117ag-15-aa3-a-r.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,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "sha256": "c877adda70b9ea660cb842d9cea6f2fa8bf71fd550ba1d8d03ca372be6c677db",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UTC(Unisonic Tech)",
      "Package": "SOT-223-4",
      "Category": "Power Management ICs",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f7f26a117cb07dc234930c120ca6bf618d0226f892c771754c15df0b9a191b18",
      "rows": [
        {
          "name": "Output Voltage (VIN=3.5V, IOUT=10mA, TJ=25°C)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.47,
          "typ": 1.5,
          "max": 1.53,
          "conditions": "VIN=3.5V, IOUT=10mA, TJ=25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (line/load range)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.47,
          "typ": 1.5,
          "max": 1.53,
          "conditions": "VIN=3 to 8V, LD1117A: IOUT=0~1000mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 6,
          "conditions": "VIN=3 to 8V, IOUT=0mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "VIN=3V, LD1117A: IOUT=0~1000mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Temperature stability",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Long Term Stability",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "1000 hrs, TJ=125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Input Voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "IOUT=100mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "VIN10V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Limit (LD1117A)",
          "symbol": "ILIMIT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1000,
          "max": null,
          "conditions": "VIN=6.5V, TJ=25°C, LD1117A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "B=10Hz to 10KHz, TJ=25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 75,
          "max": null,
          "conditions": "IOUT=40mA, f=120Hz, TJ=25°C, VIN=4.5V, VRIPPLE=1VPP",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": 1.1,
          "conditions": "IOUT=100mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.15,
          "max": 1.25,
          "conditions": "IOUT=500mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.2,
          "max": 1.3,
          "conditions": "IOUT=800mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/W",
          "min": null,
          "typ": 0.01,
          "max": 0.1,
          "conditions": "TA=25°C, 30ms Pulse",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "DC Input Voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature",
          "symbol": "TOPR",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 125,
          "conditions": "Note 2: determined from design only, not 100% tested",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (recommended)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature (recommended)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction to Ambient, SOT-223",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction to Case, SOT-223",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "LD1117AG-15-AA3-A-R (UTC(Unisonic Tech)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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