MP2481DH-LF-Z

{
  "slug": "mp2481dh-lf-z",
  "version": "0.1.0",
  "type": "component",
  "description": "Monolithic Power Systems LED Drivers, MSOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "driver ics",
    "mp2481dh-lf-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mp2481dh-lf-z.kicad_sym",
    "mp2481dh-lf-z.kicad_mod",
    "mp2481dh-lf-z.glb",
    "mp2481dh-lf-z.step",
    "mp2481dh-lf-z.lbr",
    "docs/hero.png",
    "docs/mp2481dh-lf-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mp2481dh-lf-z-hero.glb",
    "mp2481dh-lf-z-hero.overlay.json",
    "mp2481dh-lf-z-etched.glb"
  ],
  "component": {
    "mpn": "MP2481DH-LF-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "MSOP-8-EP",
    "pin_count": 9,
    "category": "Driver ICs",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192481049825280",
    "parts": {
      "symbol": "mp2481dh-lf-z.kicad_sym",
      "footprint": "mp2481dh-lf-z.kicad_mod",
      "model_3d": "mp2481dh-lf-z-hero.glb",
      "model_3d_plain": "mp2481dh-lf-z-etched.glb",
      "model_3d_step": "mp2481dh-lf-z-etched.step",
      "model_3d_step_plain": "mp2481dh-lf-z.step",
      "lbr": "mp2481dh-lf-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C111017"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:56:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage input that operates from +4.5V to +36V unregulated with respect to VSS, and C1 is needed to prevent large voltage spikes from appearing at the input."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Power return and voltage reference for the regulated output, which should be connected to the lowest potential in the circuit and is also connected to the exposed pad."
      },
      {
        "number": "3",
        "name": "OVP",
        "type": "input",
        "description": "Over-voltage protection input programmed by an external resistor divider, where the frequency folds back below 0.4V, normal operation is set between 0.4V and 1.23V, and the switch turns off when the pin reaches the 1.23V shutdown threshold."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "LED current feedback input that regulates the voltage across the current-sense resistor between FB and VSS to 0.2V, connected to the bottom of the LED strings."
      },
      {
        "number": "5",
        "name": "EN/DIM",
        "type": "input",
        "description": "On/off and dimming input where a voltage above 0.7V turns the chip on, LED current ramps from 0% to 100% as the voltage relative to INGND rises from 0.7V to 1.4V, and PWM signals of 100Hz to 1kHz must have amplitude above 1.4V."
      },
      {
        "number": "6",
        "name": "INGND",
        "type": "power_in",
        "description": "Input ground reference that serves as the reference for the EN/DIM signal."
      },
      {
        "number": "7",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap pin where a capacitor connected between SW and BST forms a floating supply that drives the power switch gate above the supply voltage."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch output that is the source of the internal MOSFET and connects to the power inductor and the cathode of the Schottky rectifier."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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: The exposed pad on the MSOP8E package has no printed pin number in the datasheet. It is not included; The datasheet gives no separate pinout for the -LF-Z suffix. Pin numbering was taken from the PIN FU",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0641,
        "at": "2026-10-18T18:56:24"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192481049825280",
        "pages": 14,
        "sha256": "843a066497849b85",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mp2481dh-lf-z.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.96
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "43252be3beac8fd30ca9bfeb82a613fa01d5dffff9b22810c13a4655daafb5ee",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mp2481dh-lf-z-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.96
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c4d7890a2394328665c13fbe47b69baa3f7780c1b35791bc673bc0cbe2fbda7b",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}