MP4420GJ-Z

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  "slug": "mp4420gj-z",
  "title": "MP4420GJ-Z",
  "brief": "Monolithic Power Systems DC-DC Converters, TSOT-23-8. 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)",
    "mp4420gj-z",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "MP4420GJ-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "TSOT-23-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590922719225454592",
    "parts": {
      "symbol": "mp4420gj-z.kicad_sym",
      "footprint": "mp4420gj-z.kicad_mod",
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      "model_3d_plain": "mp4420gj-z-etched.glb",
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      "lbr": "mp4420gj-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C3194330",
      "digikey": "1589-MP4420GJ-ZTR-ND",
      "mouser": "946-MP4420GJ-Z"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:04:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1589-MP4420GJ-ZTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "946-MP4420GJ-Z",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "PG",
        "type": "output",
        "description": "Power Good open-drain output that goes high when the output voltage exceeds 90% of the nominal voltage (PG sink voltage 0.3V max at 4mA)."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Supply voltage input that operates from a 4V to 30V input rail, decoupled with C1 using a wide PCB trace."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Switch output node that must be connected using a wide PCB trace."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "System ground and reference ground of the regulated output voltage, to be connected to GND with copper traces and vias."
      },
      {
        "number": "5",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap pin that requires a capacitor between SW and BST to form a floating high-side driver supply, with a 20Ω resistor between SW and the BST capacitor strongly recommended."
      },
      {
        "number": "6",
        "name": "EN/SYNC",
        "type": "input",
        "description": "Enable and synchronization pin where EN high enables the MP4420 and an external clock of 200kHz to 2.2MHz can be applied to change the switching frequency; without a pullup resistor the input voltage must be limited to 6V or less."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_out",
        "description": "Bias supply output of the internal 5V regulator that must be decoupled with a 0.1µF to 0.22µF capacitor, not exceeding 0.22µF."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback input connected to the external resistor divider from the output to GND to set the output voltage (0.8V reference), with frequency fold-back below 660mV."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers and names were taken from the page 2 top view and matched against the page 6 pin functio; The KiCad type list has no open-drain class, so PG is mapped to output. Its open-drain nature is sta; The datasheet does not give a KiCad ERC class for SW, BST or VCC. SW is mapped to output, BST to pas"
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        "at": "2026-10-18T03:03:01"
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        "sha256": "7b0073c4e419850e",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
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  "metadata": {
    "specs": {
      "Manufacturer": "Monolithic Power Systems",
      "Package": "TSOT-23-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "appearance": {
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        "quote": "4 GND System Ground. This pin is the reference ground of the regulated output voltage, and PCB layout requires special care. For best results, connect to GND with copper traces and vias.",
        "page": 6,
        "doc": "ds.pdf",
        "material": "copper"
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          "name": "Supply Current (Shutdown)",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "VEN = 0V",
          "source_page": 4,
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        {
          "name": "Supply Current (Quiescent)",
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        {
          "name": "HS Switch-ON Resistance",
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          "name": "LS Switch-ON Resistance",
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        {
          "name": "Oscillator Frequency",
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          "kind": "electrical",
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          "max": 95,
          "conditions": "VFB=750mV, 410kHz",
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        },
        {
          "name": "Minimum ON Time",
          "symbol": "tON MIN",
          "kind": "electrical",
          "unit": "ns",
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          "typ": null,
          "max": 70,
          "conditions": "",
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        {
          "name": "Sync Frequency Range",
          "symbol": "fSYNC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.2,
          "typ": null,
          "max": 2.4,
          "conditions": "",
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        {
          "name": "Feedback Voltage",
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          "unit": "mV",
          "min": 780,
          "typ": 792,
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          "name": "EN Rising Threshold",
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          "unit": "V",
          "min": 1.15,
          "typ": 1.4,
          "max": 1.65,
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        {
          "name": "EN Input Current",
          "symbol": "IEN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 4,
          "max": 6,
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        {
          "name": "EN Input Current",
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          "min": null,
          "typ": 0,
          "max": 0.2,
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        {
          "name": "VIN Under-Voltage Lockout Threshold-Rising",
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          "name": "VIN Under-Voltage Lockout Threshold-Hysteresis",
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        {
          "name": "VCC Regulator",
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          "min": 4.6,
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          "conditions": "ICC=0mA",
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        {
          "name": "VCC Load Regulation",
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          "name": "Soft-Start Period",
          "symbol": "tSS",
          "kind": "electrical",
          "unit": "ms",
          "min": 0.55,
          "typ": 1.45,
          "max": 2.45,
          "conditions": "VOUT from 10% to 90%",
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          "name": "Thermal Shutdown",
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          "kind": "electrical",
          "unit": "°C",
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          "name": "PG Rising Threshold",
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          "name": "PG Falling Threshold",
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          "name": "PG Rising Delay",
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          "name": "PG Sink Current Capability",
          "symbol": "VPG Sink",
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          "name": "PG Leakage Current",
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          "name": "Lead Temperature",
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          "name": "Storage Temperature",
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          "conditions": "",
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          "name": "Thermal Resistance Junction-to-Ambient",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "Measured on JESD51-7, 4-layer PCB",
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          "source": "datasheet"
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          "name": "Thermal Resistance Junction-to-Case",
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          "kind": "thermal",
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          "min": null,
          "typ": 55,
          "max": null,
          "conditions": "Measured on JESD51-7, 4-layer PCB",
          "source_page": 3,
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