UC3843AL-D08-T

{
  "slug": "uc3843al-d08-t",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC(Unisonic Tech) AC-DC Controllers & Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "uc3843al-d08-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc3843al-d08-t.kicad_sym",
    "uc3843al-d08-t.kicad_mod",
    "uc3843al-d08-t.glb",
    "uc3843al-d08-t.step",
    "uc3843al-d08-t.lbr",
    "docs/hero.png",
    "docs/uc3843al-d08-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc3843al-d08-t-hero.glb",
    "uc3843al-d08-t-hero.overlay.json",
    "uc3843al-d08-t-etched.glb"
  ],
  "component": {
    "mpn": "UC3843AL-D08-T",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Power Management ICs",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a2c067de976d4588a0a8e827f5dea4c5.pdf",
    "parts": {
      "symbol": "uc3843al-d08-t.kicad_sym",
      "footprint": "uc3843al-d08-t.kicad_mod",
      "model_3d": "uc3843al-d08-t-hero.glb",
      "model_3d_plain": "uc3843al-d08-t-etched.glb",
      "model_3d_step": "uc3843al-d08-t-etched.step",
      "model_3d_step_plain": "uc3843al-d08-t.step",
      "lbr": "uc3843al-d08-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C71119"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:04:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output for loop compensation, which sinks 2 mA min and sources 0.5 mA min, and pulling it below two diode drops above ground shuts the output down."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Error amplifier inverting (voltage feedback) input regulated to 2.5 V typ (2.42-2.58 V), with analog input range -0.3 to +6.3 V."
      },
      {
        "number": "3",
        "name": "Current Sense",
        "type": "input",
        "description": "Current sense comparator input where peak current is ISMAX = 1.0 V/Rs, with analog input range -0.3 to +6.3 V, and raising it above 1 V shuts down the output."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin for the external RT and CT, giving 52 kHz typ (47-57 kHz) at RT=10 kΩ and CT=3.3 nF."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, where timing and bypass capacitors should be connected close to this pin in a single-point ground."
      },
      {
        "number": "6",
        "name": "Output",
        "type": "output",
        "description": "Totem-pole output driving a MOSFET gate with ±1 A peak current, high impedance during under-voltage lockout, so shunt it to GND with a bleeder resistor."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply input rated 30 V max from a low-impedance source, with 34 V typ zener clamp at 25 mA, UC3843A start threshold 8.4 V typ (7.8-9 V) and minimum operating voltage 7.6 V typ."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5 V reference output (4.9-5.1 V at 1 mA, 25°C) with short-circuit current of -100 mA typ."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin configuration figure was extracted as unordered labels with only some numbers, so the pin-to; The datasheet does not state the electrical type of RT/CT. It is classed as passive because it conne"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0737,
        "at": "2026-10-23T09:03:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a2c067de976d4588a0a8e827f5dea4c5.pdf",
        "pages": 9,
        "sha256": "156578ac13622df2",
        "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": [
      {
        "file": "uc3843al-d08-t.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": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc3843al-d08-t-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": 0.0,
        "footprint_binding": "identity",
        "sha256": "25ee86ccaadedc66ad8c7b636c21cf3680d5fcef21f28c7e435e740778c29388",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}