SQ9912MST

{
  "slug": "sq9912mst",
  "version": "0.1.0",
  "type": "component",
  "description": "Sequoia Microelectronics LED Drivers, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "sq9912mst",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sq9912mst.kicad_sym",
    "sq9912mst.kicad_mod",
    "sq9912mst.glb",
    "sq9912mst.step",
    "sq9912mst.lbr",
    "docs/hero.png",
    "docs/sq9912mst-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sq9912mst-hero.glb",
    "sq9912mst-hero.overlay.json",
    "sq9912mst-etched.glb"
  ],
  "component": {
    "mpn": "SQ9912MST",
    "manufacturer": "Sequoia Microelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910905275404288",
    "parts": {
      "symbol": "sq9912mst.kicad_sym",
      "footprint": "sq9912mst.kicad_mod",
      "model_3d": "sq9912mst-hero.glb",
      "model_3d_plain": "sq9912mst-etched.glb",
      "model_3d_step": "sq9912mst-etched.step",
      "model_3d_step_plain": "sq9912mst.step",
      "lbr": "sq9912mst.lbr"
    },
    "distributor_links": {
      "lcsc": "C254128"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T01:07:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "High-voltage input pin, specified for a DC input voltage of 15.0 V to 500 V, with an absolute maximum rating of -0.5 V to +520 V to GND."
      },
      {
        "number": "2",
        "name": "CS",
        "type": "input",
        "description": "Senses the LED string current through the external source sense resistor, with a peak current sense threshold of 250 mV (225 mV to 275 mV) and an absolute rating of -0.3 V to (VDD + 0.3 V)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground; all voltages in the datasheet are referenced to this pin."
      },
      {
        "number": "4",
        "name": "GATE",
        "type": "output",
        "description": "Drives the gate of the external power MOSFET, with a high output of VDD - 0.3 V minimum and a low output of 0.3 V maximum, and an absolute rating of -0.3 V to (VDD + 0.3 V)."
      },
      {
        "number": "5",
        "name": "PWM_D",
        "type": "input",
        "description": "Low-frequency PWM dimming input that also acts as the enable, with input low at 1.0 V maximum and input high at 2.4 V minimum, an internal 200 kΩ pull-down to GND, and an absolute rating of -0.3 V to (VDD - 0.3 V)."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_out",
        "description": "Internally regulated supply, 7.5 V nominal for SQ9912 and 10 V nominal for SQ9912A, which can supply up to 1 mA to external circuitry and has a maximum voltage of 13.5 V when an external voltage is applied."
      },
      {
        "number": "7",
        "name": "OLP",
        "type": "input",
        "description": "Open-loop protection pin used to detect whether LED loading is present, with an internal 100 kΩ pull-up to VDD and an absolute rating of -0.3 V to (VDD - 0.3 V)."
      },
      {
        "number": "8",
        "name": "ROSC",
        "type": "passive",
        "description": "Oscillator control: a resistor from this pin to GND sets the PWM frequency per FOSC = 25000/(ROSC[kΩ] + 22) kHz, over a range of 25 kHz to 300 kHz."
      }
    ],
    "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 datasheet does not give KiCad ERC classes. Pin types were assigned from the stated function: VIN; The MST order code maps to the 8-pin S.O.I.C. package in the ordering section. The pin table on page"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0597,
        "at": "2026-10-19T01:06:54"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910905275404288",
        "pages": 11,
        "sha256": "063addd0bd9803c3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sq9912mst.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sq9912mst-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4e11196ba0f23762ad7209eff6011877a8de7d734e0aeee66dc765741aff6b7f",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}