UC2853D

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2853d",
  "title": "UC2853D",
  "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)",
    "uc2853d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC2853D",
    "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/uc3853",
    "parts": {
      "symbol": "uc2853d.kicad_sym",
      "footprint": "uc2853d.kicad_mod",
      "model_3d": "uc2853d-hero.glb",
      "model_3d_plain": "uc2853d.glb",
      "model_3d_step": "uc2853d-etched.step",
      "model_3d_step_plain": "uc2853d.step",
      "lbr": "uc2853d.lbr"
    },
    "distributor_links": {
      "lcsc": "C2878182",
      "digikey": "296-34723-5-ND",
      "mouser": "595-UC2853D"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:09:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-34723-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2853D",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IAC",
        "type": "input",
        "description": "AC waveform input giving voltage waveform information to the multiplier; low impedance input nominally at 2V, with a resistor from the rectified line conducting 500µA at maximum line voltage (absolute max input current 1mA)."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_in",
        "description": "Input supply voltage and squarer input; operating range 12V to 40V, bypass with at least a 0.1µF ceramic capacitor."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "Gate driver output for the external power MOSFET with a 15V clamp; use a series gate resistor of at least 5 ohms, absolute max 0.125A continuous and 0.5A peak."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for all voltages; connect the VCC bypass capacitor as close to this pin as possible."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Voltage amplifier inverting input, overvoltage comparator input and sync input, nominally regulated to 3V; trips overvoltage at 5% above nominal; absolute max 5V."
      },
      {
        "number": "6",
        "name": "VCOMP",
        "type": "output",
        "description": "Voltage loop transconductance error amplifier output; compensate with an impedance to GND (not to FB), multiplier output current is zero below 1.5V, absolute max 6.2V."
      },
      {
        "number": "7",
        "name": "IMO",
        "type": "bidirectional",
        "description": "Multiplier output and current sense inverting input summing node; avoid going below -0.5V, use about 3.9k input resistance, absolute max output current -2mA."
      },
      {
        "number": "8",
        "name": "ICOMP",
        "type": "output",
        "description": "Current loop error amplifier output with 150µA current source class A stage; compensate with an impedance between ICOMP and IMO, absolute max 7.2V and 20mA sink."
      }
    ],
    "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: Pin 5-8 and 1-4 assignments read from the connection diagram image on page 2 (D package, top view); ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.2916,
        "at": "2026-10-11T13:09:03"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3853",
        "pages": 11,
        "sha256": "b2507c5b7940ba26",
        "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": [
      {
        "file": "uc2853d.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": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2853d-etched.step",
        "role": "eda",
        "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": "20b5a37689749e5542c8aba20eb532bb8d63bbe4bf27987a4dad7e9f7aaf9c7d",
        "checked": "2026-10-11",
        "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": [
    "uc2853d"
  ],
  "discovery_pitch": "UC2853D (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": [
    "page.json",
    "README.md",
    "uc2853d.kicad_sym",
    "uc2853d.kicad_mod",
    "uc2853d.glb",
    "uc2853d.step",
    "uc2853d.lbr",
    "docs/hero.png",
    "docs/uc2853d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2853d-hero.glb",
    "uc2853d-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}