dio8950so8

{
  "slug": "dio8950so8",
  "version": "0.1.0",
  "type": "component",
  "description": "DIOO LED Drivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led-drv",
    "dio8950so8"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "dio8950so8.kicad_sym",
    "dio8950so8.kicad_mod",
    "dio8950so8.glb",
    "dio8950so8.step",
    "dio8950so8.lbr",
    "docs/hero.png",
    "docs/dio8950so8-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "dio8950so8-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray"
  },
  "component": {
    "mpn": "DIO8950SO8",
    "manufacturer": "DIOO",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "LED Drivers",
    "parts": {
      "symbol": "dio8950so8.kicad_sym",
      "footprint": "dio8950so8.kicad_mod",
      "model_3d": "dio8950so8-etched.glb",
      "model_3d_plain": "dio8950so8.glb",
      "model_3d_step": "dio8950so8-etched.step",
      "model_3d_step_plain": "dio8950so8.step",
      "lbr": "dio8950so8.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Device return; tie to pin 4 (also GND) at a single star point near the current-sense resistor."
      },
      {
        "number": "2",
        "name": "CS",
        "type": "input",
        "description": "Current-sense input. Connect the sense resistor RS between LEDN and GND; ILED = VREF / RS where VREF ≈ 153 mV (146-160 mV). Internal cycle-by-cycle CS clamp at VCS_LIMIT ≈ 3.8 V (3.6-4 V max)."
      },
      {
        "number": "3",
        "name": "COMP",
        "type": "passive",
        "description": "Loop-compensation pin for the internal transconductance error amplifier. Connect a compensation capacitor (≈1 µF recommended) between COMP and GND to set the current-loop crossover well below the line frequency. Internal pull-up current ICOMP ≈ 7 µA (6-8 µA) when 1.2 V < VCOMP < 2.4 V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin (second GND). Internally tied to pin 1; both must connect to the system ground plane."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "IC supply pin, charged from the HV JFET on pin 8. Must be locally bypassed to GND with CVIN. UVLO turn-on ≈ 13.8 V (12.8-14.8 V), turn-off ≈ 8.8 V (8-9.6 V); internal OVP shunt clamps at VVIN,OVP ≈ 18.2 V (16.4-20 V) with 3-8 mA shunt. Recommended operating range 10-13.6 V, absolute max 30 V."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Output-voltage feedback input from a resistor divider off the boost output. Used to detect LED-open / output OVP: when VFB > VFB_H ≈ 1.6 V (1.5-1.7 V) the driver is shut down and the HV path is disconnected until VIN falls to VVIN,OFF; also monitored against VFB_L ≈ 300 mV (255-345 mV). OVP leading-edge blanking TLEB ≈ 1 µs. Absolute-max input -0.3 to 5 V."
      },
      {
        "number": "7",
        "name": "DRV",
        "type": "output",
        "description": "Gate-driver output for the external primary boost MOSFET. Rise time ≈100 ns and fall time ≈50 ns into CLOAD = 1 nF; max switching frequency fMAX ≈ 130 kHz (COMP < 1.2 V), max on-time TON,MAX ≈ 35 µs. Absolute-max DRV voltage 20 V."
      },
      {
        "number": "8",
        "name": "HV",
        "type": "power_in",
        "description": "High-voltage JFET input. Connects to the rectified BUS voltage and charges CVIN through the internal HV JFET at startup, eliminating the need for an auxiliary winding. Recommended operating range 30-600 V; absolute max 700 V."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "lcsc": "C5159342",
      "digikey": false,
      "mouser": false
    },
    "distributor_check": {
      "checked_at": "2026-10-05T18:56:51Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "models_3d": [
      {
        "file": "dio8950so8.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "dio8950so8-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4e4366e4e821d9c2fa12a8176b73a498d88b34b8fee45df2b4fe4316260684e5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}