main
Ray Set visibility: public fbf5c58 16d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp1640t-i",
  "title": "MCP1640T-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": [
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    "power management ics",
    "mcp1640t-i",
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  "component": {
    "mpn": "MCP1640T-I",
    "manufacturer": "Microchip Tech",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/da7435f59b64485283192dcb55dd0e61.pdf",
    "parts": {
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      "model_3d_step_plain": "mcp1640t-i.step",
      "lbr": "mcp1640t-i.lbr"
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    "distributor_links": {
      "lcsc": "C44365"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T06:06:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "passive",
        "description": "Switch node connecting the boost inductor from the input voltage; carries inductor current up to 800 mA peak, joining the internal N-Channel switch drain and P-Channel switch source."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground/return pin for circuit ground; keep traces from input cap return, output cap return and GND pin as short as possible to minimize noise."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Logic-level enable input where logic high (>90% of VIN) enables the regulator output and logic low (<20% of VIN) disables it, lowering quiescent current."
      },
      {
        "number": "4",
        "name": "VFB",
        "type": "input",
        "description": "Feedback voltage pin for output regulation via a resistor divider, with 1.21V typical when the output is in regulation."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output voltage pin connecting the integrated P-Channel MOSFET to the output capacitor, and to which the FB voltage divider is also connected for regulation."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage pin for the source, which should be decoupled to GND with a 4.7 µF minimum capacitor."
      }
    ],
    "provenance": {
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet text does not state the electrical type of each pin; types (SW passive, VOUT power_out) ar"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0644,
        "at": "2026-10-23T06:05:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/da7435f59b64485283192dcb55dd0e61.pdf",
        "pages": 32,
        "sha256": "2cb0a5fd4fc8550b",
        "source_tier": "mfr"
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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": {
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      "footprint": "viewers/footprint.html"
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        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
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      "Manufacturer": "Microchip Tech",
      "Package": "SOT-23-6",
      "Category": "Power Management ICs",
      "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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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.65,
          "max": 0.8,
          "conditions": "Note 1: 3.3 kΩ resistive load, 3.3VOUT (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",
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          "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",
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          "min": null,
          "typ": 0.7,
          "max": 2.3,
          "conditions": "VOUT = EN = GND; Includes N-Channel and P-Channel Switch Leakage",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "NMOS Switch Leakage",
          "symbol": "INLK",
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          "unit": "µA",
          "min": null,
          "typ": 0.3,
          "max": 1,
          "conditions": "VIN = VSW = 5V; VOUT = 5.5V; VEN = VFB = GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PMOS Switch Leakage",
          "symbol": "IPLK",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "VIN = VSW = GND; VOUT = 5.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "NMOS Peak Switch Current Limit",
          "symbol": "IN(MAX)",
          "kind": "electrical",
          "unit": "mA",
          "min": 600,
          "typ": 850,
          "max": null,
          "conditions": "Note 5",
          "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": "ΔVOUT/VOUT/ΔVIN",
          "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": "ΔVOUT/VOUT",
          "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": "",
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          "source": "datasheet"
        },
        {
          "name": "EN Input Logic High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "% of VIN",
          "min": 90,
          "typ": null,
          "max": null,
          "conditions": "IOUT = 1 mA",
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          "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",
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          "source": "datasheet"
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        {
          "name": "Storage Temperature Range",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
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        {
          "name": "Maximum Junction Temperature",
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          "conditions": "Transient",
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          "name": "EN, VFB, VIN, VSW, VOUT - GND",
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          "name": "Ambient Temp. with Power Applied",
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          "name": "ESD Protection HBM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "All pins",
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        {
          "name": "Thermal Resistance, 6LD-SOT-23",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 190.5,
          "max": null,
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          "source_page": 4,
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        {
          "name": "Minimum Input Voltage After Start-Up",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.35,
          "max": null,
          "conditions": "Note 1",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Maximum Output Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "1.2V VIN, 2.0V VOUT",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 350,
          "max": null,
          "conditions": "3.3V VIN, 5.0V VOUT",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current – PWM Mode",
          "symbol": "IQPWM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "Measured at VOUT = 4.0V; EN = VIN, IOUT = 0 mA; Note 3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "NMOS Switch ON Resistance",
          "symbol": "RDS(ON)N",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "VIN = 3.3V, ISW = 100 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PMOS Switch ON Resistance",
          "symbol": "RDS(ON)P",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.9,
          "max": null,
          "conditions": "VIN = 3.3V, ISW = 100 mA",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "Soft-Start Time",
          "symbol": "tSS",
          "kind": "timing",
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          "min": null,
          "typ": 750,
          "max": null,
          "conditions": "EN Low-to-High, 90% of VOUT; Note 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Die Temperature",
          "symbol": "TSD",
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          "max": null,
          "conditions": "",
          "source_page": 4,
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          "name": "Die Temperature Hysteresis",
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          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 10,
          "max": null,
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          "source_page": 4,
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          "name": "Input Capacitor CIN",
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          "kind": "recommended_operating",
          "unit": "µF",
          "min": 4.7,
          "typ": null,
          "max": null,
          "conditions": "Recommended range",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitor COUT",
          "symbol": "COUT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 10,
          "typ": null,
          "max": 100,
          "conditions": "Recommended range",
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          "source": "datasheet"
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  },
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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