UC3844AD8TR

{
  "slug": "uc3844ad8tr",
  "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)",
    "uc3844ad8tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc3844ad8tr.kicad_sym",
    "uc3844ad8tr.kicad_mod",
    "uc3844ad8tr.glb",
    "uc3844ad8tr.step",
    "uc3844ad8tr.lbr",
    "docs/hero.png",
    "docs/uc3844ad8tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "uc3844ad8tr-hero.overlay.json"
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  "component": {
    "mpn": "UC3844AD8TR",
    "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/uc3843a",
    "parts": {
      "symbol": "uc3844ad8tr.kicad_sym",
      "footprint": "uc3844ad8tr.kicad_mod",
      "model_3d": "uc3844ad8tr-hero.glb",
      "model_3d_plain": "uc3844ad8tr.glb",
      "model_3d_step": "uc3844ad8tr-etched.step",
      "model_3d_step_plain": "uc3844ad8tr.step",
      "lbr": "uc3844ad8tr.lbr"
    },
    "distributor_links": {
      "lcsc": 111743,
      "digikey": "296-39523-2-ND",
      "mouser": "595-UC3844AD8TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T21:26:07Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-39523-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC3844AD8TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Low impedance 1MHz internal error amplifier output that also serves as the input to the peak current limit or PWM comparator with an open-loop gain (AVOL) of 80dB and a maximum sink current of 6mA."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Input to the error amplifier used to control the power supply converter output voltage feedback loop for stability."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Input to the peak current limit or PWM comparator that controls the cycle-by-cycle peak current limit of the power system when used with a current sense resistor, with the maximum peak current sense signal internally clamped to 1V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "input",
        "description": "Input to the internal oscillator programmed using external timing resistor (RT) and timing capacitor (CT) with recommended values of 470pF to 4.7nF for capacitance and 5kΩ to 100kΩ for resistor."
      },
      {
        "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 pull in or sink up to 1A of gate driver current and requires a gate driver resistor to limit the current."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Gate driver bias input that must have a bias capacitor with capacitance at least 10 times larger than the main switch FET gate capacitance used in the design."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_in",
        "description": "Reference voltage output for the PWM controller that must supply no more than 10mA of current in normal operation and is short-circuit protected at approximately 100mA, requiring 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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 27,
        "cost_usd": 0.204,
        "at": "2026-10-05T21:25:53"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3843a",
        "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
      }
    },
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}