UCC28C44D

{
  "slug": "ucc28c44d",
  "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)",
    "ucc28c44d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc28c44d.kicad_sym",
    "ucc28c44d.kicad_mod",
    "ucc28c44d.glb",
    "ucc28c44d.step",
    "ucc28c44d.lbr",
    "docs/hero.png",
    "docs/ucc28c44d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc28c44d-hero.glb",
    "ucc28c44d-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC28C44D",
    "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/ucc28c43",
    "parts": {
      "symbol": "ucc28c44d.kicad_sym",
      "footprint": "ucc28c44d.kicad_mod",
      "model_3d": "ucc28c44d-hero.glb",
      "model_3d_plain": "ucc28c44d.glb",
      "model_3d_step": "ucc28c44d-etched.step",
      "model_3d_step_plain": "ucc28c44d.step",
      "lbr": "ucc28c44d.lbr"
    },
    "distributor_links": {
      "lcsc": "C29889",
      "mouser": "595-UCC28C44D"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T22:19:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "595-UCC28C44D",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output with internal current limiting; force to ground to set zero duty cycle."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to error amplifier with internal 2.5V±1% reference for output voltage control."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current sense input to PWM comparator connected to primary-side current sense resistor."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Oscillator timing node connected to timing resistor RRT and capacitor CCT for frequency programming up to 1MHz."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return for output driver and logic control circuits."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Totem-pole output driver providing ±1A peak current for MOSFET gate drive with 25ns rise time and 20ns fall time."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Analog controller bias supply input with 20V absolute maximum; requires 0.1µF ceramic bypass capacitor to ground."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5V reference voltage output with ±1% initial accuracy; requires 0.1µF ceramic bypass capacitor close to pin for stability."
      }
    ],
    "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": [],
        "pages_sent": 42,
        "cost_usd": 0.333,
        "at": "2026-10-05T22:19:26"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc28c43",
        "pages": 60,
        "sha256": "96c53984cf7d699f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  }
}