UC2843BG-S08-R

{
  "slug": "uc2843bg-s08-r",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC(Unisonic Tech) DC-DC Controllers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "uc2843bg-s08-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "uc2843bg-s08-r.kicad_mod",
    "uc2843bg-s08-r.glb",
    "uc2843bg-s08-r.step",
    "uc2843bg-s08-r.lbr",
    "docs/hero.png",
    "docs/uc2843bg-s08-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2843bg-s08-r-hero.glb",
    "uc2843bg-s08-r-hero.overlay.json",
    "uc2843bg-s08-r-etched.glb"
  ],
  "component": {
    "mpn": "UC2843BG-S08-R",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b2b6cd6914fd6b6ea30706a1592494b9.pdf",
    "parts": {
      "symbol": "uc2843bg-s08-r.kicad_sym",
      "footprint": "uc2843bg-s08-r.kicad_mod",
      "model_3d": "uc2843bg-s08-r-hero.glb",
      "model_3d_plain": "uc2843bg-s08-r-etched.glb",
      "model_3d_step": "uc2843bg-s08-r-etched.step",
      "model_3d_step_plain": "uc2843bg-s08-r.step",
      "lbr": "uc2843bg-s08-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978931"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T16:52:46Z",
      "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, made available for loop compensation; the error amplifier can source or sink up to 0.5mA."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the Error Amplifier, normally connected to the power supply output through a resistor divider (analog input -0.3 to +6.3V absolute max)."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Current-sense input where a voltage proportional to inductor current is applied and the PWM uses it to terminate output switch conduction (shutdown above 1V; -0.3 to +6.3V absolute max)."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin: frequency and maximum output duty cycle are set by resistor RT to VREF and capacitor CT to ground, with operation to 500 kHz possible."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Combined control circuitry and power ground."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Totem-pole output directly driving the gate of a power MOSFET, sourcing and sinking peak currents up to 1.0A."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply of the control IC, rated up to 30V maximum with UVLO start threshold of 8.4V typ and 7.6V typ turn-off."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5V reference output (5V typ) that provides charging current for capacitor CT through resistor RT, with recommended reference output current of -20mA."
      }
    ],
    "provenance": {
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        "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": [],
        "pages_sent": 9,
        "cost_usd": 0.0699,
        "at": "2026-10-22T16:50:43"
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      "datasheet": {
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        "pages": 9,
        "sha256": "62697e97e778cf6a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
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        "units": "mm",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "file": "uc2843bg-s08-r-etched.step",
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        "checked": "2026-10-22",
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}