UCC38C43DGKR

{
  "slug": "ucc38c43dgkr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, VSSOP-8-0.65mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc38c43dgkr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc38c43dgkr.kicad_sym",
    "ucc38c43dgkr.kicad_mod",
    "ucc38c43dgkr.glb",
    "ucc38c43dgkr.step",
    "ucc38c43dgkr.lbr",
    "docs/hero.png",
    "docs/ucc38c43dgkr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc38c43dgkr-hero.glb",
    "ucc38c43dgkr-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC38C43DGKR",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8-0.65mm",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc38c43.pdf",
    "parts": {
      "symbol": "ucc38c43dgkr.kicad_sym",
      "footprint": "ucc38c43dgkr.kicad_mod",
      "model_3d": "ucc38c43dgkr-hero.glb",
      "model_3d_plain": "ucc38c43dgkr.glb",
      "model_3d_step": "ucc38c43dgkr-etched.step",
      "model_3d_step_plain": "ucc38c43dgkr.step",
      "lbr": "ucc38c43dgkr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2863033",
      "digikey": "296-32002-2-ND",
      "mouser": "595-UCC38C43DGKR"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T15:48:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-32002-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC38C43DGKR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "This pin provides the output of the error amplifier for compensation and is internally current-limited so zero duty cycle can be commanded by forcing COMP to GND, with error amplifier output sink current limited to 10 mA maximum."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "FB is the inverting input of the error amplifier, whose noninverting input is internally trimmed to 2.5V ±1%."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Primary-side current sense input connected to the noninverting input of the PWM comparator, which terminates OUT conduction, with analog input voltage limited to -0.3 V to 6.3 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Fixed-frequency oscillator timing node where timing resistor RRT connects to VREF and timing capacitor CCT connects to GND to set the switching frequency, with analog input voltage limited to -0.3 V to 6.3 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin for the output driver stage and the logic-level controller section, to which all voltages are referenced."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Totem-pole output intended to directly drive a MOSFET, sourcing and sinking up to 1 A peak, with a driver voltage range of -0.3 V to 20 V, and actively held low when VDD is below the turn-on threshold."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Analog controller bias and power input with an absolute maximum of 20 V, which has no internal clamp and therefore must be protected from exceeding 20 V, and which requires a 0.1 µF ceramic bypass to GND placed as close to the pin as possible."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_in",
        "description": "5 V reference output that requires a minimum 0.1 µF ceramic bypass capacitor placed as close to the pin as possible, has a 55 mA maximum output short-circuit current, and must not be pulled to ground to terminate switching."
      }
    ],
    "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 labels RT/CT as I/O; mapped to KiCad 'bidirectional'.; The datasheet labels VDD as 'I' (input); mapped to KiCad 'power_in' because it is the device supply ; GND is mapped to power_in per the task convention; the datasheet labels it as a ground return (—)."
        ],
        "pages_sent": 15,
        "cost_usd": 0.0924,
        "at": "2026-10-10T15:48:12"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc38c43.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": [
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        "file": "ucc38c43dgkr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc38c43dgkr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b143d99fcaea91d3b39a3a32785be1bbee3ef946a5ebb88cefdde84e28f701c0",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}