MP3430HQ-LF-Z

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  "slug": "mp3430hq-lf-z",
  "title": "MP3430HQ-LF-Z",
  "brief": "Monolithic Power Systems Global Sourcing Parts, QFN-16(3x3). 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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  "component": {
    "mpn": "MP3430HQ-LF-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "QFN-16(3x3)",
    "pin_count": 17,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603419732792131584",
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      "lbr": "mp3430hq-lf-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C3188150",
      "digikey": "1589-1647-2-ND",
      "mouser": "946-MP3430HQ-LF-Z"
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    "distributor_check": {
      "checked_at": "2026-10-21T01:37:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1589-1647-2-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
        "pn": "946-MP3430HQ-LF-Z",
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    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply with a recommended operating range of 2.7V to 5.5V; locally bypass this pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Shutdown control: tie to 1.6V or higher to enable the device and to 0.6V or less to disable it."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input; connect to the output resistor-divider tap, with a feedback voltage of 0.8V typical (0.77V to 0.824V)."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "7",
        "name": "MON2",
        "type": "output",
        "description": "Current-monitor output that sources 50% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ)."
      },
      {
        "number": "8",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "9",
        "name": "RLIM",
        "type": "input",
        "description": "Current-limit resistor pin; connect a resistor from RLIM to GND to program the APD current-limit threshold."
      },
      {
        "number": "10",
        "name": "MON1",
        "type": "output",
        "description": "Current-monitor output that sources 10% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ)."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "12",
        "name": "APD",
        "type": "passive",
        "description": "Connect to the APD cathode; the APD current is mirrored to MON1 and MON2 and limited by the RLIM setting."
      },
      {
        "number": "13",
        "name": "MONIN",
        "type": "power_in",
        "description": "Current-monitor supply; connect an external low-pass filter to further reduce supply voltage ripple, with a recommended voltage of 2.7V to 90V."
      },
      {
        "number": "14",
        "name": "SW",
        "type": "output",
        "description": "Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V."
      },
      {
        "number": "15",
        "name": "SW",
        "type": "output",
        "description": "Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
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          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
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        "at": "2026-10-21T01:34:25"
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      "Manufacturer": "Monolithic Power Systems",
      "Package": "QFN-16(3x3)",
      "Category": "Global Sourcing Parts",
      "Pins": "17"
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          "name": "Minimum Operating Voltage",
          "symbol": "VIN MIN",
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          "name": "Feedback Line Regulation",
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          "max": 1,
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          "name": "Supply Current (shutdown)",
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          "typ": 0.1,
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        {
          "name": "Switching Frequency",
          "symbol": "fS",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1,
          "typ": 1.3,
          "max": 1.55,
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        {
          "name": "Maximum Duty Cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 76,
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          "name": "Switch Current Limit",
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        {
          "name": "Switch RDSon",
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          "kind": "electrical",
          "unit": "Ω",
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        {
          "name": "Switch Leakage Current",
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          "name": "APD-Current-Monitor Output1 Gain",
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          "unit": "mA/mA",
          "min": 0.09,
          "typ": 0.1,
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          "name": "APD-Current-Monitor Output2 Gain",
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        {
          "name": "Monitor-Output1 Voltage Clamp",
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          "name": "APD-Monitor Voltage Drop",
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          "name": "APD-Monitor-Current Response Speed (step up)",
          "symbol": "tdelay1",
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          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": null,
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          "name": "APD-Monitor-Current Response Speed (step down)",
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          "typ": 7,
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          "name": "APD-Pin Current Limit",
          "symbol": "IMONINLMT",
          "kind": "electrical",
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          "name": "APD Current-Limit-Adjustment Range",
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          "name": "Thermal Resistance Junction-to-Ambient",
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          "typ": 60,
          "max": null,
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          "typ": 12,
          "max": null,
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          "typ": 160,
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