MCP1640BT-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp1640bt-i",
  "title": "MCP1640BT-I",
  "brief": "Microchip Tech DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "mcp1640bt-i",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "MCP1640BT-I",
    "manufacturer": "Microchip Tech",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590226850682609664",
    "parts": {
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    "distributor_links": {
      "lcsc": "C478087"
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      "checked_at": "2026-10-17T17:12:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switch node and boost inductor input pin; connect the inductor from VIN to SW, and SW carries inductor current up to 800 mA peak."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground or return pin for the circuit; keep the trace from the input cap return, output cap return and GND pin as short as possible to minimize noise, and the SOT-23-6 package uses this single ground pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Logic-level enable input: a logic high above 90% of VIN enables the regulator output, and a logic low below 20% of VIN ensures the regulator is disabled."
      },
      {
        "number": "4",
        "name": "VFB",
        "type": "input",
        "description": "Feedback voltage pin used with an external resistor divider to set output regulation, with feedback voltage of 1.21V typical in regulation."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output voltage pin that connects the integrated P-Channel MOSFET to the output capacitor, and the feedback divider is also connected to this pin for voltage regulation."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input voltage pin; the input source should be decoupled to GND with a 4.7 µF minimum capacitor."
      }
    ],
    "provenance": {
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        "cost_usd": 0.0474,
        "at": "2026-10-17T17:10:08"
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        "pages": 32,
        "sha256": "15fab187ccc7397e",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "appearance": {
      "contacts": {
        "quote": "MC = Plastic Dual Flat, No Lead (2x3 DFN), 8-lead *Y = Nickel palladium gold manufacturing designator.",
        "page": 29,
        "doc": "ds.pdf",
        "plating": "gold"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
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        {
          "name": "Minimum Start-Up Voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.65,
          "max": 0.8,
          "conditions": "Note 1: 3.3 k resistive load, 3.3V VOUT (1 mA)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Adjust Range",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 5.5,
          "conditions": "VOUT VIN; Note 2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.175,
          "typ": 1.21,
          "max": 1.245,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current – PFM Mode",
          "symbol": "IQPFM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 19,
          "max": 30,
          "conditions": "Measured at VOUT = 4.0V; EN = VIN, IOUT = 0 mA; Note 3",
          "source_page": 3,
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        },
        {
          "name": "Quiescent Current – Shutdown",
          "symbol": "IQSHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.7,
          "max": 2.3,
          "conditions": "VOUT = EN = GND; Includes N-Channel and P-Channel Switch Leakage",
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          "source": "datasheet"
        },
        {
          "name": "NMOS Peak Switch Current Limit",
          "symbol": "IN(MAX)",
          "kind": "electrical",
          "unit": "mA",
          "min": 600,
          "typ": 850,
          "max": null,
          "conditions": "Note 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VOUT Accuracy",
          "symbol": "VOUT%",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Includes Line and Load Regulation; VIN = 1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": -1,
          "typ": 0.01,
          "max": 1,
          "conditions": "VIN = 1.5V to 3V; IOUT = 25 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": 0.01,
          "max": 1,
          "conditions": "IOUT = 25 mA to 100 mA; VIN = 1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "DCMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 88,
          "typ": 90,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 425,
          "typ": 500,
          "max": 575,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Input Logic High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "%of VIN",
          "min": 90,
          "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": 20,
          "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": "Storage Temperature Range",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "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": "Input/Output Voltage to GND (EN, VFB, VIN, VSW, VOUT)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Ambient Temperature with Power Applied",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Input Capacitor Value (CIN)",
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          "kind": "recommended_operating",
          "unit": "µF",
          "min": 4.7,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitor Value (COUT)",
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          "kind": "recommended_operating",
          "unit": "µF",
          "min": 10,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 16,
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        },
        {
          "name": "Inductor Value",
          "symbol": "L",
          "kind": "recommended_operating",
          "unit": "µH",
          "min": 2.2,
          "typ": 4.7,
          "max": 10,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, 6LD-SOT-23",
          "symbol": "JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 190.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "MCP1640BT-I (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
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    "name": "Ray",
    "email": "[email protected]"
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