UCC3813DTR-1

{
  "slug": "ucc3813dtr-1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc3813dtr-1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc3813dtr-1.kicad_sym",
    "ucc3813dtr-1.kicad_mod",
    "ucc3813dtr-1.glb",
    "ucc3813dtr-1.step",
    "ucc3813dtr-1.lbr",
    "docs/hero.png",
    "docs/ucc3813dtr-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc3813dtr-1-hero.glb",
    "ucc3813dtr-1-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC3813DTR-1",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-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": "ucc3813dtr-1.kicad_sym",
      "footprint": "ucc3813dtr-1.kicad_mod",
      "model_3d": "ucc3813dtr-1-hero.glb",
      "model_3d_plain": "ucc3813dtr-1.glb",
      "model_3d_step": "ucc3813dtr-1-etched.step",
      "model_3d_step_plain": "ucc3813dtr-1.step",
      "lbr": "ucc3813dtr-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2878312",
      "digikey": "UCC3813DTR-1-ND",
      "mouser": "595-UCC3813DTR-1"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T23:38:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UCC3813DTR-1-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCC3813DTR-1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "COMP is the error amplifier output and PWM comparator input, with feedback loop compensation applied between this pin and FB; the error amplifier is a low-output-impedance 2 MHz op amp that can source and sink current and has internal current limiting."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "FB is the inverting input of the error amplifier, and its lead should be kept short with minimal stray capacitance for best stability."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "CS is the input to the current-sense comparators (PWM and overcurrent), with a 1 V typical maximum input signal and 100 ns leading-edge blanking, and it should connect directly to the MOSFET source sense resistor."
      },
      {
        "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; the timing resistor should be 10 kΩ to 200 kΩ, the timing capacitor 100 pF to 1000 pF, and the resistor must never be below 10 kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "GND is the reference and power ground for all functions of the device and should be separated from the high-current gate-driver return path."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "OUT is the high-current totem-pole gate driver output that drives a power MOSFET gate, rated for peaks of ±750 mA up to ±1 A, with an average current limit of 20 mA and held low during UVLO."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "VCC is the device bias supply input, which must be kept below the 12 V absolute maximum (about 11 V recommended from a low-impedance source, with 30 mA maximum supply current) and bypassed to GND with a 0.1 µF ceramic capacitor close to the pin."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "power_out",
        "description": "REF is the 5 V voltage reference (4 V on the UCCx813-3 and -5 variants) for the error amplifier and internal logic, rated for up to 5 mA output current and requiring at least a 0.1 µF ceramic bypass capacitor to GND."
      }
    ],
    "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: Pinout taken from the D and N package (PDIP/SOIC) top-view figure and pin table on page 3; the datas; Pin types were mapped to KiCad ERC classes: the datasheet labels VCC as input and REF as output; VCC"
        ],
        "pages_sent": 37,
        "cost_usd": 0.208,
        "at": "2026-10-08T23:37:23"
      },
      "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
      }
    },
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        "role": "plain",
        "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": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc3813dtr-1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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  }
}