OC6781

{
  "slug": "oc6781",
  "version": "0.1.0",
  "type": "component",
  "description": "OCX LED Drivers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "nixie tube driver-led driver",
    "oc6781",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "oc6781.kicad_sym",
    "oc6781.kicad_mod",
    "oc6781.glb",
    "oc6781.step",
    "oc6781.lbr",
    "docs/hero.png",
    "docs/oc6781-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "oc6781-hero.glb",
    "oc6781-hero.overlay.json",
    "oc6781-etched.glb"
  ],
  "component": {
    "mpn": "OC6781",
    "manufacturer": "OCX",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Nixie Tube Driver/LED Driver",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918112750485504",
    "parts": {
      "symbol": "oc6781.kicad_sym",
      "footprint": "oc6781.kicad_mod",
      "model_3d": "oc6781-hero.glb",
      "model_3d_plain": "oc6781-etched.glb",
      "model_3d_step": "oc6781-etched.step",
      "model_3d_step_plain": "oc6781.step",
      "lbr": "oc6781.lbr"
    },
    "distributor_links": {
      "lcsc": "C879355"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:32:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DRV",
        "type": "output",
        "description": "Gate drive output for the external power MOSFET, with an absolute maximum pin voltage of -0.3 to 8 V and rise and fall times of 50 ns each with a 500 pF load."
      },
      {
        "number": "2",
        "name": "VDD",
        "type": "power_in",
        "description": "Chip supply input with an operating range of 5 to 40 V, an undervoltage lockout at 4.8 V on rising VDD, and an absolute maximum of 45 V."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input, active high, requiring at least 3.2 V for logic high and at most 0.8 V for logic low, with an absolute maximum of -0.3 to 45 V."
      },
      {
        "number": "4",
        "name": "ROSC",
        "type": "input",
        "description": "Switching frequency setting pin, where a resistor to GND sets about 450 kHz, a floating pin gives 500 kHz, and the datasheet example uses ROSC = 330 kΩ for 120 kHz, with an absolute maximum of -0.3 to 6 V."
      },
      {
        "number": "5",
        "name": "OVP",
        "type": "input",
        "description": "Output overvoltage detection input, where the OVP threshold is set by an external divider R1/R2 referenced to VREF = 1 V, with an absolute maximum of -0.3 to 6 V."
      },
      {
        "number": "6",
        "name": "VFB",
        "type": "input",
        "description": "LED output current feedback input, which the loop regulates to about 250 mV (240 to 260 mV) through the feedback resistor RFB, with an absolute maximum of -0.3 to 6 V."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the device."
      },
      {
        "number": "8",
        "name": "VCS",
        "type": "input",
        "description": "Inductor current sense input used for cycle-by-cycle peak current limiting with a 250 mV threshold (240 to 260 mV), with an absolute maximum of -0.3 to 6 V."
      }
    ],
    "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 only lists the SOP8 package for OC6781 (page 1 and page 2), so the pinout is taken fro; The pin functions and descriptions are on page 2, but the electrical limits quoted in the descriptio; The ROSC description is a condensed summary: the datasheet gives the frequency formula Fs = 1/(4.83*"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0275,
        "at": "2026-10-18T02:28:47"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918112750485504",
        "pages": 7,
        "sha256": "f13a2a530b995b53",
        "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": "oc6781.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "oc6781-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": "fb68fbae95e471e8e0b14228d73eafb83973eca6129604503aaeb6e19233147c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}