BL1117C-12CX

{
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  "type": "component",
  "slug": "bl1117c-12cx",
  "title": "BL1117C-12CX",
  "brief": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "bl1117c-12cx"
  ],
  "component": {
    "mpn": "BL1117C-12CX",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-223",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c479283b87afd26540c43f9a77180f21.pdf",
    "parts": {
      "symbol": "bl1117c-12cx.kicad_sym",
      "footprint": "bl1117c-12cx.kicad_mod",
      "model_3d": "bl1117c-12cx-etched.glb",
      "model_3d_plain": "bl1117c-12cx.glb",
      "model_3d_step": "bl1117c-12cx-etched.step",
      "model_3d_step_plain": "bl1117c-12cx.step",
      "lbr": "bl1117c-12cx.lbr"
    },
    "distributor_links": {
      "lcsc": "C35863"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference. Connect to system ground. On SOT-223 the tab is typically tied to pin 2 (Vout); the discrete GND pin is pin 1 on the fixed-output variant."
      },
      {
        "number": "2",
        "name": "Vout",
        "type": "power_out",
        "description": "Regulated 1.2V output (±2%, min 1.176V, max 1.224V) at up to 1A load current. Requires a 10uF tantalum bypass capacitor to ground for stability."
      },
      {
        "number": "3",
        "name": "Vin",
        "type": "power_in",
        "description": "Unregulated input voltage supply. Recommended min 2.7V (for 1.2V output), max 12V. Dropout is 1.3V at 1A load. Requires a 10uF tantalum bypass capacitor to ground."
      }
    ],
    "provenance": {
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        "pages": 9,
        "sha256": "d00b9330975215ce",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.15,
        -2.3
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-223-3_TabPin2@sha256:8ae5f03e2c16377a",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "zmin_mm": -0.0,
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        "sha256": "fb2c6d2b6cca0b59be141a3ac86385c45662a545ec775ff532dbc44e1d5caf0b",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOT-223",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d00b9330975215ce",
      "rows": [
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 11.76,
          "typ": 12,
          "max": 12.24,
          "conditions": "0≤Iout≤1A , Vin=14V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "Iout=10mA, 13.5V≤Vin≤20V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 30,
          "conditions": "Vin=13.5V, 10mA≤Iout≤1A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vdrop",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.23,
          "max": 1.3,
          "conditions": "Iout=100mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vdrop",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.3,
          "max": 1.5,
          "conditions": "Iout=1A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 5,
          "conditions": "BL1117C-12.0V, Vin =20V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature Coefficient",
          "symbol": "ΔV/ΔT",
          "kind": "temperature_coefficient",
          "unit": "ppm",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Input Voltage (absolute)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Input Voltage (recommended, BL1117C-12V exception)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Exception stated for BL1117C-12V; general recommended max is 12V for other versions",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature (recommended)",
          "symbol": "Tj",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max Operating Junction Temperature",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
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        },
        {
          "name": "Ambient Temperature",
          "symbol": "Ta",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Ts",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10S",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "Ilimit",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "Vin-Vout=2V, Tj=25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance SOT-223",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case SOT-223",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "BL1117C-12CX (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "variants": [
    {
      "mpn": "BL1117C-12CX",
      "kind": "packaging"
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    {
      "mpn": "BL1117C-12CX12CY",
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    {
      "mpn": "BL1117C-12CX12CM",
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    }
  ],
  "updated_at": "2026-09-24T17:47:03.905Z"
}