TPS61181RTER

{
  "slug": "tps61181rter",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments LED Drivers, WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "tps61181rter",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tps61181rter.kicad_sym",
    "tps61181rter.kicad_mod",
    "tps61181rter.glb",
    "tps61181rter.step",
    "tps61181rter.lbr",
    "docs/hero.png",
    "docs/tps61181rter-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tps61181rter-hero.glb",
    "tps61181rter-hero.overlay.json"
  ],
  "component": {
    "mpn": "TPS61181RTER",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps61182",
    "parts": {
      "symbol": "tps61181rter.kicad_sym",
      "footprint": "tps61181rter.kicad_mod",
      "model_3d": "tps61181rter-hero.glb",
      "model_3d_plain": "tps61181rter.glb",
      "model_3d_step": "tps61181rter-etched.step",
      "model_3d_step_plain": "tps61181rter.step",
      "lbr": "tps61181rter.lbr"
    },
    "distributor_links": {
      "lcsc": "C544429",
      "digikey": "296-23378-2-ND",
      "mouser": "595-TPS61181RTER"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T21:36:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-23378-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS61181RTER",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground of the IC, internally connected to the source of the PWM switch."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "passive",
        "description": "Connects to the drain of the internal PWM switch, the external Schottky diode and the inductor; absolute maximum rating on SW is -0.3 V to 40 V."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery supply input that provides the Fault pin pull-up reference and the battery voltage sense; recommended range 5.0 V to 24 V, and it is the input to the internal LDO on TPS61181."
      },
      {
        "number": "4",
        "name": "VO",
        "type": "power_out",
        "description": "Monitors the boost regulator output and connects to the anodes of the WLED strings; absolute maximum rating is -0.3 V to 40 V and the overvoltage threshold is 38 V to 40 V."
      },
      {
        "number": "5",
        "name": "ISET",
        "type": "input",
        "description": "A resistor on this pin programs the WLED output current, with ISET voltage 1.229 V typical and current multiple KISET of 1000 typical."
      },
      {
        "number": "6",
        "name": "Cin",
        "type": "power_out",
        "description": "On TPS61181 this is the output of the internal LDO, which needs a 0.1 µF bypass capacitor and must not be connected to EN or other circuits; IC supply voltage range is 2.7 V to 3.6 V."
      },
      {
        "number": "7",
        "name": "IFB1",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "8",
        "name": "IFB2",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "9",
        "name": "IFB3",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground of the IC."
      },
      {
        "number": "11",
        "name": "DCTRL",
        "type": "input",
        "description": "Dimming control logic input; the PWM dimming frequency range is 100 Hz to 1 kHz, with logic high at 1.2 V and logic low at 0.4 V."
      },
      {
        "number": "12",
        "name": "IFB4",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "13",
        "name": "IFB5",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "14",
        "name": "IFB6",
        "type": "input",
        "description": "Current sink regulation input connected to the WLED cathodes; each channel is limited to 25 mA and the PWM loop regulates the lowest IFB to 400 mV."
      },
      {
        "number": "15",
        "name": "EN",
        "type": "input",
        "description": "Enable input; a logic high turns on the internal LDO and enables the IC, and EN must not be connected to Cin."
      },
      {
        "number": "16",
        "name": "Fault",
        "type": "output",
        "description": "Gate driver output for an external PFET used for fault protection, which can also serve as a system fault report signal and is referenced to the VBAT pull-up with absolute maximum rating -0.3 V to 24 V."
      },
      {
        "number": "17",
        "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-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The package hint says WQFN-16-EP(3x3), but the datasheet never states an exposed thermal pad (EP) or; The datasheet pinout is shared by the TPS61180/1/2 family. The TPS61181RTER ordering entry (page 21 ; The datasheet lists Cin as type I, but on TPS61181 it is the internal LDO output (power_out). The da",
          "exposed pad 17 added from the footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0889,
        "at": "2026-10-08T21:35:49"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps61182",
        "pages": 29,
        "sha256": "e9480e02f5fae586",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tps61181rter.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps61181rter-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6d6277479886a651f16c9a52efc45e69eef739252a4fb54d14165b3bfa318f9f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}