WS2811

{
  "schema_version": 1,
  "type": "component",
  "slug": "ws2811",
  "title": "WS2811",
  "brief": "Worldsemi LED Drivers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "ws2811"
  ],
  "component": {
    "mpn": "WS2811",
    "manufacturer": "Worldsemi",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "docs/ws2811-datasheet.pdf",
    "parts": {
      "symbol": "ws2811.kicad_sym",
      "footprint": "ws2811.kicad_mod",
      "model_3d": "ws2811-etched.glb",
      "model_3d_plain": "ws2811.glb",
      "model_3d_step": "ws2811-etched.step",
      "model_3d_step_plain": "ws2811.step",
      "lbr": "ws2811.lbr"
    },
    "distributor_links": {
      "lcsc": "C114581"
    },
    "pins": [
      {
        "number": "1",
        "name": "OUTR",
        "type": "output",
        "description": "RED channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA (14-18 mA range) at DC=5V with DIN=FFh. Drives LED cathode(s) with series ballast resistor Rd sized to supply voltage."
      },
      {
        "number": "2",
        "name": "OUTG",
        "type": "output",
        "description": "GREEN channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA. Delayed turn-on relative to other channels to reduce supply ripple at frame refresh."
      },
      {
        "number": "3",
        "name": "OUTB",
        "type": "output",
        "description": "BLUE channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA. 256-level PWM at 4 kHz scan frequency."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both signal and power. VSS = 0V."
      },
      {
        "number": "5",
        "name": "DO",
        "type": "output",
        "description": "Cascade data output. Reshaped/retimed forward of remaining bits after this IC consumes its first 24 bits. Drives next stage's DIN. Low-level output current >=10 mA at Vo=0.4V; propagation delay tPLZ <=300 ns (CL=15pF, RL=10kΩ). Withstands transient 24V short without damage."
      },
      {
        "number": "6",
        "name": "DIN",
        "type": "input",
        "description": "Single-wire serial data input (NRZ, 800 kbps). VIH >= 0.55*VDD, VIL <= 0.3*VDD, hysteresis ~0.35V. First 24 bits (R7..R0, G7..G0, B7..B0, MSB first) are latched by this IC; remaining bits are forwarded through DO. RESET frame is low >=280 µs. Port withstands 9.5V and transient 24V short."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to any potential per PCB layout convenience."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply for the IC. Operating range +3.5 to +5.7 V (absolute max), typical 4.5-5.5V. Quiescent current ~0.3 mA. On-chip shunt regulator allows operation from supplies up to 24V via an external series dropping resistor (Rd = 150Ω @5V, 4.7kΩ @12V, 10kΩ @24V) with a 1 µF decoupling capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "docs/ws2811-datasheet.pdf",
        "pages": 8,
        "sha256": "18c5e95266753d5c",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ws2811.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ws2811-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": "2104e476bc77d73bfb7013dce4926f6022f2fad5f4892cc27981009a6b9ac3d2",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Worldsemi",
      "Package": "SOP-8",
      "Category": "LED-drv",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ws2811"
  ],
  "discovery_pitch": "WS2811 (Worldsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ws2811.kicad_sym",
    "ws2811.kicad_mod",
    "ws2811.glb",
    "ws2811.step",
    "ws2811.lbr",
    "docs/hero.png",
    "docs/ws2811-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ws2811-etched.step"
  ],
  "updated_at": "2026-09-25T14:08:50.170Z"
}