QX9920

{
  "schema_version": 1,
  "type": "component",
  "slug": "qx9920",
  "title": "QX9920",
  "brief": "QX Micro Devices LED Drivers, SOT-23-6L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "qx9920"
  ],
  "component": {
    "mpn": "QX9920",
    "manufacturer": "QX Micro Devices",
    "package": "SOT-23-6L",
    "pin_count": 6,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f4c675f68aa39293092238a5b2282511.pdf",
    "parts": {
      "symbol": "qx9920.kicad_sym",
      "footprint": "qx9920.kicad_mod",
      "model_3d": "qx9920-etched.glb",
      "model_3d_plain": "qx9920.glb",
      "model_3d_step": "qx9920-etched.step",
      "model_3d_step_plain": "qx9920.step",
      "lbr": "qx9920.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "DRV",
        "type": "output",
        "description": "Gate drive output for the external N-channel power MOSFET. Provides the gate switching signal generated by the internal RS latch / off-time logic. Maximum pin current 100mA; leave floating when no external MOSFET is used."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Device ground / power return. Connects to the negative rail of the supply."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input, active high. Logic-high threshold 0.4*VOUT, logic-low ≤0.3V, input current 0.1µA at logic high. A PWM signal on EN dims the LED brightness."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Internal circuit supply pin. Operating range 2.5V to 6V (absolute range noted as 2V-6.5V in pin table). Typically fed from VIN through a series resistor with a 2.5V-5.5V zener clamp when VIN exceeds this range."
      },
      {
        "number": "5",
        "name": "TOFF",
        "type": "input",
        "description": "External MOSFET off-time setting pin. Off-time set by an R (ROFF) and C (COFF) network to VDD/GND per TOFF = 0.51 * (100kΩ·ROFF / (ROFF+100kΩ)) * (COFF + 12pF). If left unconnected, internal off-time defaults to 612ns."
      },
      {
        "number": "6",
        "name": "CS",
        "type": "input",
        "description": "Current-sense feedback input. Connect to the top of the source-sense resistor Rcs on the external MOSFET source. Internal reference is 250mV (240-260mV), so LED current I_LED = 250mV / Rcs."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f4c675f68aa39293092238a5b2282511.pdf",
        "pages": 7,
        "sha256": "48a3c3d1a329b82e",
        "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": "qx9920.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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "qx9920-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f43ae885a19db8df484349a8ac0494cce943d5aff1f479bb68944fade0de46c7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "QX Micro Devices",
      "Package": "SOT-23-6L",
      "Category": "LED-drv",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "qx9920"
  ],
  "discovery_pitch": "QX9920 (QX Micro Devices) 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",
    "qx9920.kicad_sym",
    "qx9920.kicad_mod",
    "qx9920.glb",
    "qx9920.step",
    "qx9920-etched.step",
    "qx9920.lbr",
    "docs/hero.png",
    "docs/qx9920-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T04:40:50.504Z"
}