UC2845BD

{
  "slug": "uc2845bd",
  "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)",
    "uc2845bd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc2845bd.kicad_sym",
    "uc2845bd.kicad_mod",
    "uc2845bd.glb",
    "uc2845bd.step",
    "uc2845bd.lbr",
    "docs/hero.png",
    "docs/uc2845bd-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2845bd-hero.glb",
    "uc2845bd-hero.overlay.json",
    "uc2845bd-etched.glb"
  ],
  "component": {
    "mpn": "UC2845BD",
    "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/8603345057739259904",
    "parts": {
      "symbol": "uc2845bd.kicad_sym",
      "footprint": "uc2845bd.kicad_mod",
      "model_3d": "uc2845bd-hero.glb",
      "model_3d_plain": "uc2845bd-etched.glb",
      "model_3d_step": "uc2845bd-etched.step",
      "model_3d_step_plain": "uc2845bd.step",
      "lbr": "uc2845bd.lbr"
    },
    "distributor_links": {
      "lcsc": "C22390258"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T17:10:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output (比较端) that the datasheet specifies with a sink current capability of 2 to 12 mA and a limit of 10 mA for the error amplifier output sink current."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Negative feedback input (负反馈) of the error amplifier, with a 2.50 V reference (2.42 to 2.58 V) and an input bias current of -0.1 to -2 µA at VFB = 5 V."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Current sense input (电流灵敏度) with a current-sense gain of 3 V/V (2.85 to 3.15 V/V) and a maximum input signal of 0.9 to 1.1 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin (振荡端); with RT = 10 kΩ and CT = 3.3 nF the datasheet gives an oscillator frequency of 49 to 55 kHz (52 kHz typical) at Tj = 25 ℃."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "Ground (地) reference pin for the controller."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Push-pull output (输出) that can source or sink large currents to drive a MOSFET power device, with an output current rating of ±1 A."
      },
      {
        "number": "7",
        "name": "Vi",
        "type": "power_in",
        "description": "Supply pin (电源) with a 30 V maximum rating from a low-impedance source; for the UC2845 the undervoltage lockout is 8.8 V turn-on and 7.6 V turn-off."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Reference voltage (参考电压) output of 5.00 V (4.90 to 5.10 V) at Io = 1 mA, with an output 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 SOP8 pinout is taken from the 引脚说明 (pin description) table on the page-5 marker. The pin-diagram; The product table on the page-3 marker lists four SOP8 rows, but the product-name cells are blank in; The datasheet gives one pinout shared by the DIP8 and SOP8 variants. The pin descriptions were taken",
          "1/8 pin names appear NOWHERE in the datasheet text: ['5:GROUND@p5']"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0432,
        "at": "2026-10-18T17:09:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603345057739259904",
        "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": "uc2845bd.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2845bd-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": "3c8befd78a105e4297ec018dbc8468686b2c6e7495c18c1c4ebe62d529cee22e",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}