DX1246

{
  "slug": "dx1246",
  "version": "0.1.0",
  "type": "component",
  "description": "Dersem LED Drivers, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "dx1246",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "dx1246.kicad_sym",
    "dx1246.kicad_mod",
    "dx1246.glb",
    "dx1246.step",
    "dx1246.lbr",
    "docs/hero.png",
    "docs/dx1246-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "dx1246-hero.glb",
    "dx1246-hero.overlay.json",
    "dx1246-etched.glb"
  ],
  "component": {
    "mpn": "DX1246",
    "manufacturer": "Dersem",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369279052406784",
    "parts": {
      "symbol": "dx1246.kicad_sym",
      "footprint": "dx1246.kicad_mod",
      "model_3d": "dx1246-hero.glb",
      "model_3d_plain": "dx1246-etched.glb",
      "model_3d_step": "dx1246-etched.step",
      "model_3d_step_plain": "dx1246.step",
      "lbr": "dx1246.lbr"
    },
    "distributor_links": {
      "lcsc": "C22364153"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:05:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DIM",
        "type": "input",
        "description": "PWM dimming input that supports PWM above 20 kHz with better than 1000:1 resolution, is internally pulled up by 100uA when left floating, and puts the chip into sleep mode after being held low for more than 120 ms (absolute maximum VDIM -0.3 to 6.0 V)."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; the datasheet specifies this pin is left floating (悬空)."
      },
      {
        "number": "3",
        "name": "CS1",
        "type": "input",
        "description": "Output current sense pin 1, where the LED current is set by an external sense resistor using IOUT = 0.137 / Rcs and the CS pin voltage is rated -0.3 to 6 V absolute maximum."
      },
      {
        "number": "4",
        "name": "CS2",
        "type": "input",
        "description": "Output current sense pin 2, which is part of the same current-sense connection as CS1, with the same 0.137 / Rcs current setting and -0.3 to 6 V absolute maximum rating on the CS port."
      },
      {
        "number": "5",
        "name": "VDDO",
        "type": "power_out",
        "description": "5 V supply pin, with the datasheet listing VDDO at 5.6 V in the electrical table; the datasheet states the external PWM-controller supply function applies only to DX1240 and DX12410, not to DX1246."
      },
      {
        "number": "6",
        "name": "DRAIN",
        "type": "output",
        "description": "LED driver pin connected to the internal NMOS drain that sinks the LED current, with the output voltage rated -0.3 to 60 V for the DX1246 variant."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Chip supply input with an operating range of 2.5 to 40 V (electrical table lists 3.0 to 40 V) and an absolute maximum of -0.3 to 46 V, where the datasheet recommends a clamp from VIN to GND when VIN exceeds 36 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference pin."
      },
      {
        "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: Exposed pad is printed as '衬底 DRAIN' (substrate DRAIN, LED drive pin) with no pin number in the text; Datasheet has two pin tables. The 6-pin table (DIM, GND, VIN, VDDO, DRV, CS) belongs to the SOT23-6 ; No pin diagram or numbering drawing is given for ESOP8; the pin numbers come from the numbered pin t",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0437,
        "at": "2026-10-18T01:03:54"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369279052406784",
        "pages": 9,
        "sha256": "dcd1102efc9dac6e",
        "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": "dx1246.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "dx1246-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4d1eabcdcf348f62c5f55eab943a5fa48736be78aa9e7773d478490b45e1f41a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}