Hi1246

{
  "schema_version": 1,
  "type": "component",
  "slug": "hi1246",
  "title": "Hi1246",
  "brief": "Hichips LED Drivers, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "nixie tube driver-led driver",
    "hi1246",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "Hi1246",
    "manufacturer": "Hichips",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Nixie Tube Driver/LED Driver",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757955980963254272",
    "parts": {
      "symbol": "hi1246.kicad_sym",
      "footprint": "hi1246.kicad_mod",
      "model_3d": "hi1246-hero.glb",
      "model_3d_plain": "hi1246-etched.glb",
      "model_3d_step": "hi1246-etched.step",
      "model_3d_step_plain": "hi1246.step",
      "lbr": "hi1246.lbr"
    },
    "distributor_links": {
      "lcsc": "C4944977"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:58:37Z",
      "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": "Chip supply input with an internal high-voltage LDO, operating from 3.0 V to 40 V (absolute maximum -0.3 to 40 V); a series R0 (1 kΩ above 12 V) and a 20-30 V zener are recommended for surge and over-voltage protection above 36 V."
      },
      {
        "number": "2",
        "name": "TEST",
        "type": "unconnected",
        "description": "Test pin that must be left floating (not connected) in the application."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Output current sense pin; the LED current is set by the external CS resistor as I_OUT = 0.143 V / R_CS, with a CS pin voltage rating of -0.3 to 6.0 V."
      },
      {
        "number": "4",
        "name": "D",
        "type": "output",
        "description": "Drain of the internal MOSFET that sinks the constant LED current, rated for a drain voltage of -0.3 to 60 V for the Hi1246 variant."
      },
      {
        "number": "5",
        "name": "DIM",
        "type": "input",
        "description": "PWM dimming input with an internal 100 µA pull-up (default high when floating), supporting 1000:1 dimming at 20 kHz and above, with a PWM input voltage rating of -0.3 to 6.0 V; the chip enters sleep mode if PWM is held low for more than 120 ms."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference pin."
      }
    ],
    "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: Pin numbers, names and functions are taken from the Hi124X family pinout table (page 2). The Hi1246 ; Some descriptions draw on information from other pages (VIN range on pages 1 and 4, CS formula on pa; Pin types are my KiCad ERC classification, not stated in the datasheet. D is classed as output, and "
        ],
        "pages_sent": 8,
        "cost_usd": 0.0227,
        "at": "2026-10-18T01:56:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757955980963254272",
        "pages": 8,
        "sha256": "27aca28cedfa19ec",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "hi1246.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hi1246-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4f5f17a775f0bb457aeba8687346302654906b252039e4f4c063d57dc3eee61d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Hichips",
      "Package": "SOT-23-6",
      "Category": "Nixie Tube Driver/LED Driver",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "27aca28cedfa19ec99d803c89c1c97ab88ac30203f02d7e7c52cfcb5413109cc",
      "rows": [
        {
          "name": "VIN supply voltage range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN supply voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Constant-current output port withstand voltage (Hi1246)",
          "symbol": "VD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PWM input voltage",
          "symbol": "VDim",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "CS port withstand voltage",
          "symbol": "VCS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum allowable power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.35,
          "conditions": "see note 2: limited by TJMAX, RθJA and TA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM rating",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "KV",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "HBM; datasheet prints '>2 KV'",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 210,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "hi1246"
  ],
  "discovery_pitch": "Hi1246 (Hichips) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
    "public": true
  }
}