UCC2813PWTR-4

{
  "slug": "ucc2813pwtr-4",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc2813pwtr-4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "ucc2813pwtr-4.kicad_sym",
    "ucc2813pwtr-4.kicad_mod",
    "ucc2813pwtr-4.glb",
    "ucc2813pwtr-4.step",
    "ucc2813pwtr-4.lbr",
    "docs/hero.png",
    "docs/ucc2813pwtr-4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc2813pwtr-4-hero.glb",
    "ucc2813pwtr-4-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC2813PWTR-4",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucc3813-0",
    "parts": {
      "symbol": "ucc2813pwtr-4.kicad_sym",
      "footprint": "ucc2813pwtr-4.kicad_mod",
      "model_3d": "ucc2813pwtr-4-hero.glb",
      "model_3d_plain": "ucc2813pwtr-4.glb",
      "model_3d_step": "ucc2813pwtr-4-etched.step",
      "model_3d_step_plain": "ucc2813pwtr-4.step",
      "lbr": "ucc2813pwtr-4.lbr"
    },
    "distributor_links": {
      "lcsc": "C2868227",
      "digikey": "UCC2813PWTR-4-ND",
      "mouser": "595-UCC2813PWTR-4"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T21:11:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UCC2813PWTR-4-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC2813PWTR-4",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "COMP is the error amplifier output and PWM comparator input, with feedback loop compensation connected between this pin and FB; the amplifier has internal current limiting, and forcing COMP to GND sets zero duty cycle."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "FB is the inverting input of the error amplifier, and its trace should be kept short with minimal stray capacitance for best stability."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "CS is the input to the PWM and overcurrent comparators, connected directly to the MOSFET source sense resistor, with a 100 ns leading-edge blanking interval and a 0.9 V to 1.1 V maximum input signal."
      },
      {
        "number": "4",
        "name": "RC",
        "type": "input",
        "description": "RC is the oscillator timing pin, where an external resistor from REF and a capacitor to GND set the switching frequency and maximum duty cycle, with RT recommended between 10 kΩ and 200 kΩ, CT between 100 pF and 1000 pF, and RT never below 10 kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "GND is the reference ground and power ground for all device functions, and TI recommends separating the signal return path from the high-current gate driver path."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "OUT is the high-current power driver output for the power MOSFET gate, rated at ±1 A absolute maximum, and it is actively held low while VCC is below the UVLO threshold."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "VCC is the device bias supply input, which must stay below the 12 V absolute maximum (with VCC current not exceeding 30 mA) and above the UVLO turn-off threshold, typically fed through a current-limiting resistor and bypassed with a 0.1 µF ceramic capacitor."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "power_out",
        "description": "REF is the voltage reference output (5 V for the -0, -1, -2 and -4 versions, 4 V for the -3 and -5 versions, ±1.5% at 25°C) that needs a 0.1 µF minimum ceramic bypass capacitor and is recommended to source no more than 5 mA."
      }
    ],
    "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 datasheet is a Chinese translation; pin names, numbers and functions were taken from the PW (TSS; Pin types for VCC (power_in) and REF (power_out) were assigned as KiCad power classes based on their; The orderable list (page 38) confirms UCC2813PWTR-4 is an active 8-pin TSSOP (PW) part, so the PW pi"
        ],
        "pages_sent": 37,
        "cost_usd": 0.2082,
        "at": "2026-10-08T21:10:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc3813-0",
        "pages": 53,
        "sha256": "e691a7fcf4f2163a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cf28a51742b2e31065e201d1b313207140cbfb49062efd938788f7a310d02738",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc2813pwtr-4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6218199c9b12d62b0bd054c1815d1f6221cef1f9018e01ff1c0b02a66020171f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}