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Ray Set visibility: public 53c4307 3h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "kma1117-3-3v",
  "title": "KMA1117-3.3V",
  "brief": "KEXIN Linear Voltage Regulators (LDO), SOT-89-3. 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",
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  "component": {
    "mpn": "KMA1117-3.3V",
    "manufacturer": "KEXIN",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6658633dd4cfff6ff0ad03d2a025f287.pdf",
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      "lbr": "kma1117-3-3v.lbr"
    },
    "distributor_links": {
      "lcsc": "C489391"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:11:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the fixed 3.3V version (labelled Adj(GND), the adjust pin on the ADJ version)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 3.3V output (3.235 to 3.365V at 10mA, 25°C) with 1A current limit and 1.4V maximum dropout at full load."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply, absolute maximum -0.3 to 12V, with 4.8V to 12V specified for the 3.3V version."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet text never names the package (no SOT-89 text or package drawing). The pin order 1=Adj(; Pin 1 is labelled 'Adj(GND)'. It is the adjust pin on the ADJ version and ground on fixed versions, "
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        "at": "2026-10-22T22:10:49"
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        "pages": 3,
        "sha256": "40249197d3934d98",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-22",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "KEXIN",
      "Package": "SOT-89-3",
      "Category": "Power Management ICs",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "40249197d3934d988cafdf69f7f672310e1201c8d982368606e0f9917d470a1c",
      "rows": [
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 3.235,
          "typ": 3.3,
          "max": 3.365,
          "conditions": "IOUT = 10mA, TJ = 25, 4.8V ≤ VIN ≤ 12V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "IO=10mA,VOUT+1.5V ≤ VIN ≤ 12V, TJ=25",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 26,
          "max": 33,
          "conditions": "VIN=5V,0mA ≤ Io ≤ 1A,TJ=25",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage (VIN-VOUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.3,
          "max": 1.4,
          "conditions": "IOUT = 1A , ΔVOUT=0.1%VOUT",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "(VIN-VOUT) = 5V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum Load Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "0 ≤ Tj ≤ 125",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/W",
          "min": null,
          "typ": 0.008,
          "max": 0.04,
          "conditions": "TA=25, 30ms pulse",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 70,
          "max": null,
          "conditions": "F=120Hz,COUT=25uF Tantalum, IOUT=1A, VIN=VOUT+3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature Stability",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "IO=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Voltage",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 12,
          "conditions": "Ta = 25",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TOP",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TST",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "Control Circuitry/Power Transistor",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "KMA1117-3.3V (KEXIN) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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