UCC2809DTR-1

{
  "schema_version": 1,
  "type": "component",
  "slug": "ucc2809dtr-1",
  "title": "UCC2809DTR-1",
  "brief": "Texas Instruments AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc2809dtr-1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UCC2809DTR-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/ucc2809-2",
    "parts": {
      "symbol": "ucc2809dtr-1.kicad_sym",
      "footprint": "ucc2809dtr-1.kicad_mod",
      "model_3d": "ucc2809dtr-1-hero.glb",
      "model_3d_plain": "ucc2809dtr-1.glb",
      "model_3d_step": "ucc2809dtr-1-etched.step",
      "model_3d_step_plain": "ucc2809dtr-1.step",
      "lbr": "ucc2809dtr-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2870227",
      "digikey": "296-39533-2-ND",
      "mouser": "595-UCC2809DTR-1"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:53:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-39533-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC2809DTR-1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Summing node for current sense feedback, optocoupler voltage feedback and slope compensation, compared to a 1V threshold, with an internal 250 ohm NMOS discharging external filter capacitance during PWM off time for leading edge blanking."
      },
      {
        "number": "2",
        "name": "SS",
        "type": "bidirectional",
        "description": "Soft start pin where the timing capacitor is charged by an internal 6µA current source, and taking it below 0.5V inhibits the output driver, turns off REF and drops IVDD below 100µA."
      },
      {
        "number": "3",
        "name": "RT1",
        "type": "passive",
        "description": "Connects to timing resistor RT1, which sets the positive ramp time of the internal oscillator (Tr = 0.74 × (CT + 27pF) × RT1)."
      },
      {
        "number": "4",
        "name": "RT2",
        "type": "passive",
        "description": "Connects to timing resistor RT2, which sets the negative ramp time of the internal oscillator (Tf = 0.74 × (CT + 27pF) × RT2), with timing capacitor CT at the common node."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground and power ground for all functions."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "High current power driver output (0.4A source/0.8A sink) for N-channel MOSFETs, with a minimum series gate resistor of 3.9 ohms recommended."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Power input shunt regulated at 17.5V (absolute maximum 19V), to be bypassed with a 1µF ceramic capacitor."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "power_out",
        "description": "Buffered internal 5V reference output, to be bypassed with a 0.47µF ceramic capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: SS is bidirectional: capacitor charged by internal source and can be pulled low externally to shut d; RT1/RT2 typed passive as they connect to external timing resistors; the datasheet does not state a p",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 24,
        "cost_usd": 0.3272,
        "at": "2026-10-08T16:53:31"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc2809-2",
        "pages": 24,
        "sha256": "7fc852aa75a77966",
        "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"
    },
    "models_3d": [
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        "file": "ucc2809dtr-1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc2809dtr-1-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "00e28f61b2b8da9f09d151ccb7e2b6b6039e882a35eaadfb4e58023157f72a23",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ucc2809dtr-1"
  ],
  "discovery_pitch": "UCC2809DTR-1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "ucc2809dtr-1.step",
    "ucc2809dtr-1.lbr",
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    "docs/ucc2809dtr-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc2809dtr-1-hero.glb",
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  "visibility": {
    "public": true
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}