UC3844G-SO8-R

{
  "slug": "uc3844g-so8-r",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC Unisonic Tech 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)",
    "uc3844g-so8-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc3844g-so8-r.kicad_sym",
    "uc3844g-so8-r.kicad_mod",
    "uc3844g-so8-r.glb",
    "uc3844g-so8-r.step",
    "uc3844g-so8-r.lbr",
    "docs/hero.png",
    "docs/uc3844g-so8-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc3844g-so8-r-hero.glb",
    "uc3844g-so8-r-hero.overlay.json",
    "uc3844g-so8-r-etched.glb"
  ],
  "component": {
    "mpn": "UC3844G-SO8-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586196549763780608",
    "parts": {
      "symbol": "uc3844g-so8-r.kicad_sym",
      "footprint": "uc3844g-so8-r.kicad_mod",
      "model_3d": "uc3844g-so8-r-hero.glb",
      "model_3d_plain": "uc3844g-so8-r-etched.glb",
      "model_3d_step": "uc3844g-so8-r-etched.step",
      "model_3d_step_plain": "uc3844g-so8-r.step",
      "lbr": "uc3844g-so8-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C87304"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:02:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Compensation",
        "type": "output",
        "description": "Error amplifier output, made available for loop compensation."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the error amplifier, normally connected to the switching power supply output through a resistor divider; the current sense and voltage feedback inputs are rated -0.3 V to +5.5 V."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Input proportional to inductor current that the PWM uses to terminate output switch conduction, with a maximum current sense input threshold of 0.9 V to 1.1 V (1.0 V typical)."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin: resistor RT connects to Vref and capacitor CT to ground to program the oscillator frequency and maximum output duty cycle, and operation to 1 MHz is possible."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "6",
        "name": "Output",
        "type": "output",
        "description": "Directly drives the gate of a power MOSFET, sourcing and sinking peak currents up to 1 A, and switches at one-half the oscillator frequency."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; the total power supply and zener current (ICC+IZ) is rated at 30 mA maximum."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Reference output that provides charging current for capacitor CT through resistor RT, with a reference output voltage of 4.9 V to 5.1 V at IOUT = 1.0 mA and TJ = 25°C."
      }
    ],
    "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 MPN is written UC3844G-SO8-R, but the datasheet ordering table lists UC3844G-S08-R as the SOP-8 ; The pin table on page 2 gives one numbering and one set of names for the device. The pin configurati; Pin types are assigned from the functional descriptions because the datasheet does not state electri"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0341,
        "at": "2026-10-18T02:01:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586196549763780608",
        "pages": 7,
        "sha256": "43d85764f509307f",
        "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"
    },
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        "file": "uc3844g-so8-r.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": "uc3844g-so8-r-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": "bc47ad4793897aec884f779580404f1d24b152362b9ef5819ed9ff643df306ea",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}