UC2843BD

{
  "slug": "uc2843bd",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic AC-DC Controllers And Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "uc2843bd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc2843bd.kicad_sym",
    "uc2843bd.kicad_mod",
    "uc2843bd.glb",
    "uc2843bd.step",
    "uc2843bd.lbr",
    "docs/hero.png",
    "docs/uc2843bd-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2843bd-hero.glb",
    "uc2843bd-hero.overlay.json"
  ],
  "component": {
    "mpn": "UC2843BD",
    "manufacturer": "lingxingic",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603345056782688256",
    "parts": {
      "symbol": "uc2843bd.kicad_sym",
      "footprint": "uc2843bd.kicad_mod",
      "model_3d": "uc2843bd-hero.glb",
      "model_3d_plain": "uc2843bd.glb",
      "model_3d_step": "uc2843bd-etched.step",
      "model_3d_step_plain": "uc2843bd.step",
      "lbr": "uc2843bd.lbr"
    },
    "distributor_links": {
      "lcsc": "C22390254",
      "mouser": "863-UC2843BD"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T21:30:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 550 calls left today"
      },
      "mouser": {
        "pn": "863-UC2843BD",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Compensation pin, the error amplifier output (比较端), whose sink current is rated at up to 10 mA (Isink(EA)) and whose open-loop gain is 65 dB minimum (90 dB typical)."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Negative feedback input (负反馈) to the error amplifier, with a 2.5 V nominal reference (2.42 to 2.58 V) and input bias current of -0.1 µA typical (-2 µA maximum) at VFB = 5 V."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Current sense input (电流灵敏度) to the current-sense comparator, with a maximum input signal of 0.9 to 1.1 V and a current-sense gain of 3 V/V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin (振荡端) for the RT and CT timing network; the datasheet's test conditions are RT = 10 kΩ and CT = 3.3 nF, with 52 kHz typical oscillator frequency and 1.6 V peak-to-peak oscillation amplitude."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "Ground pin (地) for the controller; the datasheet gives no further electrical limit for this pin."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Push-pull gate drive output (输出) for driving MOSFET power devices, rated at ±1 A output current."
      },
      {
        "number": "7",
        "name": "Vi",
        "type": "power_in",
        "description": "Supply pin (电源) with a 30 V maximum rating from a low-impedance source, a 12 V to 25 V operating range in the electrical tests, and a 0.3 mA typical (1 mA maximum) start-up current."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Reference voltage output (参考电压) of 5.00 V typical (4.90 to 5.10 V at Io = 1 mA, Tj = 25 °C), with a short-circuit current of -30 to -180 mA."
      }
    ],
    "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 pin-to-function mapping is taken from the pin description table on page 5 (pins 1-8, Chinese lab; The packing/ordering table is flattened into text and does not explicitly tie each part number to it; The pin types are KiCad ERC classes chosen from the functional descriptions, not from a datasheet-st",
          "1/8 pin names appear NOWHERE in the datasheet text: ['5:GROUND@p5']"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0495,
        "at": "2026-10-09T21:28:21"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603345056782688256",
        "pages": 11,
        "sha256": "065498dc909cbc66",
        "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": "uc2843bd.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2843bd-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "bc7c17baedc2848304c1490459188908e426e6fd74433b9b3f176996c88e7208",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}