LP8861QPWPRQ1

{
  "slug": "lp8861qpwprq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "nixie tube driver-led driver",
    "lp8861qpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "lp8861qpwprq1.step",
    "lp8861qpwprq1.lbr",
    "docs/hero.png",
    "docs/lp8861qpwprq1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "component": {
    "mpn": "LP8861QPWPRQ1",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Nixie Tube Driver/LED Driver",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lp8861-q1",
    "parts": {
      "symbol": "lp8861qpwprq1.kicad_sym",
      "footprint": "lp8861qpwprq1.kicad_mod",
      "model_3d": "lp8861qpwprq1-etched.glb",
      "model_3d_plain": "lp8861qpwprq1.glb",
      "model_3d_step": "lp8861qpwprq1-etched.step",
      "model_3d_step_plain": "lp8861qpwprq1.step",
      "lbr": "lp8861qpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C485554",
      "digikey": "296-42558-2-ND",
      "mouser": "595-LP8861QPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T18:10:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-42558-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LP8861QPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input power supply (4.5 V to 45 V operating range) and positive input for optional current-sense resistor."
      },
      {
        "number": "2",
        "name": "LDO",
        "type": "output",
        "description": "Internal LDO output (4.15-4.45 V typical) requiring 1 \u03bcF decoupling capacitor to ground."
      },
      {
        "number": "3",
        "name": "FSET",
        "type": "input",
        "description": "Switching frequency setting pin with external resistor 24 k\u03a9 to 219 k\u03a9 connected to ground for 300 kHz to 2.2 MHz operation."
      },
      {
        "number": "4",
        "name": "VDDIO/EN",
        "type": "power_in",
        "description": "Digital IO supply voltage (0 V to 5.25 V) and device enable control input."
      },
      {
        "number": "5",
        "name": "FAULT",
        "type": "tri_state",
        "description": "Open-drain fault signal output (0.3-0.5 V low); may be left floating if unused."
      },
      {
        "number": "6",
        "name": "SYNC",
        "type": "input",
        "description": "External synchronization input (300 kHz to 2.2 MHz) for boost/SEPIC clock; ground for disabled spread spectrum, VDDIO/EN for enabled."
      },
      {
        "number": "7",
        "name": "PWM",
        "type": "input",
        "description": "PWM brightness control input (100 Hz to 20 kHz recommended frequency range) with 0.5 \u03bcs minimum ON/OFF time."
      },
      {
        "number": "8",
        "name": "TSENSE",
        "type": "input",
        "description": "NTC thermistor bridge temperature sense input; leave floating if temperature-based LED dimming not used."
      },
      {
        "number": "9",
        "name": "TSET",
        "type": "input",
        "description": "NTC thermistor bridge reference input; must be connected to ground if temperature derating feature not used."
      },
      {
        "number": "10",
        "name": "ISET",
        "type": "input",
        "description": "LED output current setting pin with external resistor 24 k\u03a9 to 129 k\u03a9 connected to ground setting maximum 100 mA per channel."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for logic and signal return paths."
      },
      {
        "number": "12",
        "name": "OUT4",
        "type": "output",
        "description": "LED current sink output 4 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."
      },
      {
        "number": "13",
        "name": "OUT3",
        "type": "output",
        "description": "LED current sink output 3 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."
      },
      {
        "number": "14",
        "name": "OUT2",
        "type": "output",
        "description": "LED current sink output 2 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."
      },
      {
        "number": "15",
        "name": "OUT1",
        "type": "output",
        "description": "LED current sink output 1 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."
      },
      {
        "number": "16",
        "name": "FB",
        "type": "input",
        "description": "Boost/SEPIC feedback voltage input connected to center tap of resistor divider (5 k\u03a9 to 150 k\u03a9 per resistor) between VOUT and ground."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Boost/SEPIC converter power ground return path."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "output",
        "description": "Boost/SEPIC internal switch node (0 V to 50 V absolute maximum) with 2 A current limit typical (2.5 A warm-start) and 240-400 m\u03a9 RDSon."
      },
      {
        "number": "19",
        "name": "SD",
        "type": "output",
        "description": "Power-line FET gate control output for external soft-start transistor (185-283 \u03bcA pulldown current); may be left floating if not used."
      },
      {
        "number": "20",
        "name": "VSENSE_N",
        "type": "input",
        "description": "Input supply current-sense feedback pin; connect to VIN when optional input current-sense resistor not used."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 43,
        "cost_usd": 0.4551,
        "at": "2026-10-01T18:10:18"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lp8861-q1",
        "pages": 43,
        "sha256": "ad8ad167d60c5bfc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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}