UCC38C40DR

{
  "slug": "ucc38c40dr",
  "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)",
    "ucc38c40dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc38c40dr.kicad_sym",
    "ucc38c40dr.kicad_mod",
    "ucc38c40dr.glb",
    "ucc38c40dr.step",
    "ucc38c40dr.lbr",
    "docs/hero.png",
    "docs/ucc38c40dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc38c40dr-hero.glb",
    "ucc38c40dr-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC38C40DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc38c40.pdf",
    "parts": {
      "symbol": "ucc38c40dr.kicad_sym",
      "footprint": "ucc38c40dr.kicad_mod",
      "model_3d": "ucc38c40dr-hero.glb",
      "model_3d_plain": "ucc38c40dr.glb",
      "model_3d_step": "ucc38c40dr-etched.step",
      "model_3d_step_plain": "ucc38c40dr.step",
      "lbr": "ucc38c40dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C7124",
      "digikey": "296-UCC38C40DRTR-ND",
      "mouser": "595-UCC38C40DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T01:31:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UCC38C40DRTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC38C40DR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier compensation output; internally current-limited and can be forced to GND to command zero duty cycle."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input to error amplifier for feedback loop stability; compared against 2.5V ± 1% internally-trimmed noninverting input."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current sense input to PWM comparator; signal compared to error amplifier output to control switch conduction."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Oscillator timing node; connect timing resistor to VREF and timing capacitor to GND to set switching frequency."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin for output driver stage and logic level controller section."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Gate driver output capable of sourcing and sinking 1A peak current; actively held low when VDD is below turn-on threshold."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Analog controller bias and power input requiring 0.1µF bypass capacitor to GND with minimal trace length."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5V reference voltage output with ±1% accuracy for oscillator timing and internal biasing; requires 0.1µF ceramic bypass to GND."
      }
    ],
    "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": 15,
        "cost_usd": 0.1416,
        "at": "2026-10-07T01:31:15"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc38c40.pdf",
        "pages": 60,
        "sha256": "9fa55f996731c56b",
        "source_tier": "mfr"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "ucc38c40dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc38c40dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "231eabc5d60bc3f03b28b7a351932ec389e7509fd9a0464220c23adf413b1f27",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}