TLC5971PWPR

{
  "slug": "tlc5971pwpr",
  "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",
    "tlc5971pwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tlc5971pwpr.kicad_sym",
    "tlc5971pwpr.kicad_mod",
    "tlc5971pwpr.glb",
    "tlc5971pwpr.step",
    "tlc5971pwpr.lbr",
    "docs/hero.png",
    "docs/tlc5971pwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "TLC5971PWPR",
    "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/tlc5971",
    "parts": {
      "symbol": "tlc5971pwpr.kicad_sym",
      "footprint": "tlc5971pwpr.kicad_mod",
      "model_3d": "tlc5971pwpr-etched.glb",
      "model_3d_plain": "tlc5971pwpr.glb",
      "model_3d_step": "tlc5971pwpr-etched.step",
      "model_3d_step_plain": "tlc5971pwpr.step",
      "lbr": "tlc5971pwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C181236",
      "digikey": "296-27796-2-ND",
      "mouser": "595-TLC5971PWPR"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T17:58:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-27796-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TLC5971PWPR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IREF",
        "type": "output",
        "description": "Maximum current programming terminal; external resistor (0.82 k\u03a9 to 24.8 k\u03a9) connected to GND sets the maximum constant-current value for all output channels (60 mA to 2 mA)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground terminal and exposed thermal pad (bottom side)."
      },
      {
        "number": "3",
        "name": "OUTR0",
        "type": "output",
        "description": "RED constant-current sink output channel 0; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "4",
        "name": "OUTG0",
        "type": "output",
        "description": "GREEN constant-current sink output channel 0; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "5",
        "name": "OUTB0",
        "type": "output",
        "description": "BLUE constant-current sink output channel 0; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "6",
        "name": "OUTR1",
        "type": "output",
        "description": "RED constant-current sink output channel 1; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "7",
        "name": "OUTG1",
        "type": "output",
        "description": "GREEN constant-current sink output channel 1; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "8",
        "name": "OUTB1",
        "type": "output",
        "description": "BLUE constant-current sink output channel 1; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "9",
        "name": "SDTI",
        "type": "input",
        "description": "Serial data input for 224-bit shift register; data shifted on SCKI rising edge with 5 ns setup time and 3 ns hold time."
      },
      {
        "number": "10",
        "name": "SCKI",
        "type": "input",
        "description": "Serial data shift clock input; maximum frequency 20 MHz; 10 ns minimum pulse duration; data shifted toward MSB at each SCKI rising edge."
      },
      {
        "number": "11",
        "name": "SCKO",
        "type": "output",
        "description": "Serial data shift clock output; adjusted timing of SCKI for synchronization of cascaded devices; output voltage range 0 V to VREG."
      },
      {
        "number": "12",
        "name": "SDTO",
        "type": "output",
        "description": "Serial data output of 224-bit shift register; connected to MSB; data clocked out at SCKI rising edge; output voltage range 0 V to VREG."
      },
      {
        "number": "13",
        "name": "OUTR2",
        "type": "output",
        "description": "RED constant-current sink output channel 2; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "14",
        "name": "OUTG2",
        "type": "output",
        "description": "GREEN constant-current sink output channel 2; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "15",
        "name": "OUTB2",
        "type": "output",
        "description": "BLUE constant-current sink output channel 2; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "16",
        "name": "OUTR3",
        "type": "output",
        "description": "RED constant-current sink output channel 3; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "17",
        "name": "OUTG3",
        "type": "output",
        "description": "GREEN constant-current sink output channel 3; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "18",
        "name": "OUTB3",
        "type": "output",
        "description": "BLUE constant-current sink output channel 3; individual 16-bit PWM grayscale control; maximum 60 mA per channel."
      },
      {
        "number": "19",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input; 6 V to 17 V for internal linear regulator mode or 3 V to 5.5 V for direct power supply mode."
      },
      {
        "number": "20",
        "name": "VREG",
        "type": "power_out",
        "description": "Internal linear voltage regulator output; 3.3 V nominal output (3.1 V to 3.5 V); requires 1 \u00b5F decoupling capacitor; can supply external devices (maximum -25 mA output current)."
      },
      {
        "number": "21",
        "name": "PowerPAD",
        "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": 47,
        "cost_usd": 0.5688,
        "at": "2026-10-01T17:57:52"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tlc5971",
        "pages": 47,
        "sha256": "9314545e14dcae46",
        "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"
    }
  }
}