LP8861QPWPRQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "lp8861qpwprq1",
  "title": "LP8861QPWPRQ1",
  "brief": "Texas Instruments LED Drivers, HTSSOP-20-EP. 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",
    "lp8861qpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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": "2026-10-01T18:32:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-42558-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-LP8861QPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input power pin operating from 4.5 V to 40 V, also serving as positive input for optional current-sense resistor."
      },
      {
        "number": "2",
        "name": "LDO",
        "type": "output",
        "description": "Output of internal low-dropout regulator; 1-μF decoupling capacitor must be connected between this pin and noise-free ground."
      },
      {
        "number": "3",
        "name": "FSET",
        "type": "input",
        "description": "Boost/SEPIC switching frequency setting controlled by resistor value from 24 kΩ to 219 kΩ connected between this pin and ground."
      },
      {
        "number": "4",
        "name": "VDDIO/EN",
        "type": "power_in",
        "description": "Enable input for the device and supply input for digital pins."
      },
      {
        "number": "5",
        "name": "FAULT",
        "type": "tri_state",
        "description": "Open-drain fault signal output; may be left floating if unused."
      },
      {
        "number": "6",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronization input for boost/SEPIC converter; connect to GND to disable spread spectrum or to VDDIO/EN to enable spread spectrum."
      },
      {
        "number": "7",
        "name": "PWM",
        "type": "input",
        "description": "PWM dimming input for LED brightness control."
      },
      {
        "number": "8",
        "name": "TSENSE",
        "type": "input",
        "description": "Input for NTC thermistor bridge circuit for temperature sensing; must be left floating if unused."
      },
      {
        "number": "9",
        "name": "TSET",
        "type": "input",
        "description": "Reference input for NTC thermistor bridge circuit; must be connected to GND if not used."
      },
      {
        "number": "10",
        "name": "ISET",
        "type": "input",
        "description": "LED current setting input controlled by resistor value from 24 kΩ to 129 kΩ connected between this pin and ground."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin."
      },
      {
        "number": "12",
        "name": "OUT4",
        "type": "output",
        "description": "LED current sink output channel 4; must be connected to GND if unused."
      },
      {
        "number": "13",
        "name": "OUT3",
        "type": "output",
        "description": "LED current sink output channel 3; must be connected to GND if unused."
      },
      {
        "number": "14",
        "name": "OUT2",
        "type": "output",
        "description": "LED current sink output channel 2; must be connected to GND if unused."
      },
      {
        "number": "15",
        "name": "OUT1",
        "type": "output",
        "description": "LED current sink output channel 1; must be connected to GND if unused."
      },
      {
        "number": "16",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for boost/SEPIC converter; must be connected to middle of resistor divider between VOUT and ground using feedback resistor values from 5 kΩ to 150 kΩ."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Boost/SEPIC converter power ground."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "output",
        "description": "Boost/SEPIC switching node connected to internal power FET and external inductor/diode."
      },
      {
        "number": "19",
        "name": "SD",
        "type": "output",
        "description": "Power-line FET gate drive output for external MOSFET control; may be left floating if unused."
      },
      {
        "number": "20",
        "name": "VSENSE_N",
        "type": "input",
        "description": "Input current sense pin; connect to VIN when optional input current-sense resistor is 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 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Exposed pad (EP) shown in package diagram on page 4 but not explicitly detailed in pin functions tab"
        ],
        "pages_sent": 9,
        "cost_usd": 0.2534,
        "at": "2026-10-01T18:32:33"
      },
      "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
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-20-EP",
      "Category": "Nixie Tube Driver/LED Driver",
      "Pins": "21"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lp8861qpwprq1"
  ],
  "discovery_pitch": "LP8861QPWPRQ1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "lp8861qpwprq1.step",
    "lp8861qpwprq1.lbr",
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    "docs/lp8861qpwprq1-datasheet.pdf",
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  "visibility": {
    "public": true
  }
}