MCP1624T-I

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  "slug": "mcp1624t-i",
  "title": "MCP1624T-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",
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    "power management (pmic)",
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  "component": {
    "mpn": "MCP1624T-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/8588881246231670784",
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      "lbr": "mcp1624t-i.lbr"
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    "distributor_links": {
      "lcsc": "C128443"
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      "checked_at": "2026-10-19T08:33:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
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        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "passive",
        "description": "Switch node and boost inductor input pin, which carries inductor current with peaks up to 425 mA."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin; keep the input capacitor loop, output capacitor loop and GND trace as short as possible to minimize noise on GND."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Logic-level enable input: a level above 90% of VIN enables the regulator and a level below 20% of VIN disables it."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin for output regulation through a resistor divider, where the FB voltage is 1.21 V (typical) when the output is regulated."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output voltage pin that connects the integrated P-channel MOSFET to the output capacitor, with the output adjustable from 2.0 V to 5.5 V and the FB divider tied to this pin."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage pin that should be decoupled to GND with a minimum of 4.7 µF."
      }
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        "guard_notes": [
          "extractor flagged: The datasheet is a Chinese translation (DS41420C_CN) covering MCP1623/24. The SOT-23-6 pin table is ; Pin types and English descriptions were written from the Chinese text. The SW pin type (passive) is "
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        "at": "2026-10-19T08:31:32"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
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        "refuses_to_fabricate": true
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      "Manufacturer": "Microchip Tech",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
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          "name": "Minimum start-up voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.65,
          "max": 0.8,
          "conditions": "Note 1: 3.3 kΩ resistive load, 3.3V VOUT (1 mA)",
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          "name": "Output voltage regulation range",
          "symbol": "VOUT",
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          "name": "Feedback voltage",
          "symbol": "VFB",
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          "typ": 1.21,
          "max": 1.299,
          "conditions": "",
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        },
        {
          "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",
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          "conditions": "VIN = VSW = 5V; VOUT = 5.5V, VEN = VFB = GND",
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          "name": "PMOS switch leakage current",
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          "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": 300,
          "typ": 425,
          "max": null,
          "conditions": "Note 5: peak current limit set by design, not production tested",
          "source_page": 4,
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        },
        {
          "name": "VOUT accuracy",
          "symbol": "VOUT%",
          "kind": "tolerance",
          "unit": "%",
          "min": -7.4,
          "typ": null,
          "max": 7.4,
          "conditions": "Includes line and load regulation; VIN = 1.5V, IOUT = 50 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 370,
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          "max": 630,
          "conditions": "",
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          "name": "EN input logic high level",
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          "kind": "electrical",
          "unit": "%",
          "min": 90,
          "typ": null,
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          "conditions": "Percent of VIN; IOUT = 1 mA",
          "source_page": 4,
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          "name": "EN input logic low level",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Percent of VIN; IOUT = 1 mA",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Steady state",
          "source_page": 4,
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        {
          "name": "Storage temperature range",
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          "unit": "°C",
          "min": -65,
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          "max": 150,
          "conditions": "Storage",
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        {
          "name": "Maximum junction temperature",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Transient",
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          "name": "Ambient temperature with power applied",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Power applied",
          "source_page": 3,
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        {
          "name": "Input/output voltage absolute maximum",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "EN, FB, VIN, VSW and VOUT to GND",
          "source_page": 3,
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        {
          "name": "ESD HBM protection",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "HBM, all pins",
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        {
          "name": "ESD MM protection",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
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          "max": 300,
          "conditions": "MM, all pins",
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        {
          "name": "FB input bias current",
          "symbol": "IVFB",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 3,
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          "name": "Quiescent current, PWM mode",
          "symbol": "IQPWM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "Measured at VOUT; EN = VIN, IOUT = 0 mA; Note 3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "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"
        },
        {
          "name": "NMOS on-resistance",
          "symbol": "RDS(ON)N",
          "kind": "electrical",
          "unit": "",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "VIN = 3.3V, ISW = 100 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PMOS on-resistance",
          "symbol": "RDS(ON)P",
          "kind": "electrical",
          "unit": "",
          "min": null,
          "typ": 0.9,
          "max": null,
          "conditions": "VIN = 3.3V, ISW = 100 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "DCMAX",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": null,
          "conditions": "VIN = 1.5V to 3V; IOUT = 25 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.01,
          "max": null,
          "conditions": "IOUT = 25 mA to 50 mA; VIN = 1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN input leakage current",
          "symbol": "IENLK",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.005,
          "max": null,
          "conditions": "VEN = 5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft-start time",
          "symbol": "tSS",
          "kind": "timing",
          "unit": "µS",
          "min": null,
          "typ": 750,
          "max": null,
          "conditions": "EN low to high, VOUT reaches 90%; Note 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown die temperature",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Die temperature hysteresis",
          "symbol": "TSDHYS",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Thermal resistance, junction to ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 192,
          "max": null,
          "conditions": "EIA/JESD51-3 standard",
          "source_page": 4,
          "source": "datasheet"
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