MCP1663T-E

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  "slug": "mcp1663t-e",
  "title": "MCP1663T-E",
  "brief": "Microchip Tech DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "MCP1663T-E",
    "manufacturer": "Microchip Tech",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588940142186795008",
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    "distributor_links": {
      "lcsc": "C625338"
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      "checked_at": "2026-10-21T00:21:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switch node pin that carries the boost inductor current (1.8A peak typical), with the inductor connected from the input voltage to SW and the integrated N-channel switch drain internally tied to this node."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin for circuit ground, and the traces from the input cap return, output cap return and GND pin must be as short as possible to minimize noise on the GND pin."
      },
      {
        "number": "3",
        "name": "VFB",
        "type": "input",
        "description": "Feedback voltage pin used with a resistor divider to regulate the output voltage, with a VFB voltage of 1.227V typical."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Logic-level enable input where a logic high above 85% of VIN enables the regulator and a logic low below 7.5% of VIN disables it, lowering quiescent current while disabled."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage pin that must be decoupled from GND with a 4.7 µF minimum capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-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 provided pages (7 of 38) do not include the ordering information, so the text does not explicitl; The SW pin type was set to 'output' as a judgment call, since the datasheet describes SW only as the"
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        "pages_sent": 7,
        "cost_usd": 0.0282,
        "at": "2026-10-21T00:17:14"
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      "datasheet": {
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        "pages": 38,
        "sha256": "b39ca566afe92958",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
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  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b39ca566afe9295878b6f469b2e62d92466dab2f9dda698f32dbbb42e553a953",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 5.5,
          "conditions": "Note 1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Adjust Range",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 32,
          "conditions": "Note 1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.19,
          "typ": 1.227,
          "max": 1.264,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VFB Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "|(VFB/VFB)/VIN|",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.5,
          "conditions": "VIN = 3V to 5V, IOUT = 20 mA, VOUT = 12.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "|VFB/VFB|",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.5,
          "max": 1.5,
          "conditions": "IOUT = 20 mA to 125 mA, VIN = 3.3V, VOUT = 12.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "DCMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 88,
          "typ": 90,
          "max": null,
          "conditions": "Note 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 425,
          "typ": 500,
          "max": 575,
          "conditions": "±15%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Input Logic High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "% of VIN",
          "min": 85,
          "typ": null,
          "max": null,
          "conditions": "IOUT = 1 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Input Logic Low",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "% of VIN",
          "min": null,
          "typ": null,
          "max": 7.5,
          "conditions": "IOUT = 1 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Steady State",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Transient",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VSW – GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN, VIN – GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "VFB",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature with Power Applied",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Protection HBM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "ESD protection on all pins, HBM",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, 5LD-SOT-23",
          "symbol": "JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 201,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "MCP1663T-E (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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