UC2844AN

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2844an",
  "title": "UC2844AN",
  "brief": "Texas Instruments AC-DC Controllers And Regulators, DIP-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)",
    "uc2844an",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC2844AN",
    "manufacturer": "Texas Instruments",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc2844a",
    "parts": {
      "symbol": "uc2844an.kicad_sym",
      "footprint": "uc2844an.kicad_mod",
      "model_3d": "uc2844an-hero.glb",
      "model_3d_plain": "uc2844an.glb",
      "model_3d_step": "uc2844an-etched.step",
      "model_3d_step_plain": "uc2844an.step",
      "lbr": "uc2844an.lbr"
    },
    "distributor_links": {
      "lcsc": "C111740",
      "digikey": "296-11183-5-ND",
      "mouser": "595-UC2844AN"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T05:29:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-11183-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2844AN",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Low-impedance 1MHz internal error amplifier output (open-loop gain AVOL 80dB), also feeding the peak current limit/PWM comparator; it can sink a maximum of 6mA and is not internally current-limited."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Error amplifier input used to close the power converter voltage feedback loop and set its stability."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Input to the peak current limit / PWM comparator, where the maximum peak current sense signal is internally clamped to 1V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "input",
        "description": "Internal oscillator timing input programmed with external timing resistor RT and timing capacitor CT; TI recommends CT of 470pF to 4.7nF and RT of 5kΩ to 100kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Controller signal ground."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "1A totem-pole gate driver output that can source and sink up to 1A, and a gate driver resistor must be used to limit the gate drive current."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Gate driver bias supply input (absolute maximum 30V, recommended minimum 11V) that requires a bias capacitor at least 10 times the gate capacitance of the main switching FET."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "PWM controller reference voltage output that must supply no more than 10mA in normal operation, is short-circuit protected at about 100mA, and needs a 1µF high-frequency bypass capacitor."
      }
    ],
    "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's pin table labels VCC as 'I' and VREF as 'O'; I mapped them to KiCad power_in and pow; The datasheet covers the UC2842A/2843A/2844A/2845A family in one document. The pinout applies to the"
        ],
        "pages_sent": 27,
        "cost_usd": 0.1375,
        "at": "2026-10-08T05:28:51"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc2844a",
        "pages": 54,
        "sha256": "1f5ad8805f414728",
        "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": "uc2844an.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2844an-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6a1361f8abf3a3554430275086b1b2f729d25d96305b6ec8cacdc41838b9fcee",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "DIP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "uc2844an"
  ],
  "discovery_pitch": "UC2844AN (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",
    "uc2844an.kicad_sym",
    "uc2844an.kicad_mod",
    "uc2844an.glb",
    "uc2844an.step",
    "uc2844an.lbr",
    "docs/hero.png",
    "docs/uc2844an-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2844an-hero.glb",
    "uc2844an-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}