U2043G

{
  "schema_version": 1,
  "type": "component",
  "slug": "u2043g",
  "title": "U2043G",
  "brief": "UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "u2043g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "U2043G",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603078202310860800",
    "parts": {
      "symbol": "u2043g.kicad_sym",
      "footprint": "u2043g.kicad_mod",
      "model_3d": "u2043g-hero.glb",
      "model_3d_plain": "u2043g-etched.glb",
      "model_3d_step": "u2043g-etched.step",
      "model_3d_step_plain": "u2043g.step",
      "lbr": "u2043g.lbr"
    },
    "distributor_links": {
      "lcsc": "C7509615"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:18:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "IC ground, the reference point for the device; in case of battery reversal, external resistor R4 to ground protects the IC against damage."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Supply voltage VSS (+10); operating range 9 to 15 V with an absolute maximum rating of 16.5 V, and the connection must keep the resistance from VSS to pin 6 lower than to pin 2."
      },
      {
        "number": "3",
        "name": "REL",
        "type": "output",
        "description": "Relay control output, a high-side driver with low saturation voltage (1.0 V max at 150 mA with VSS = 9 V) that drives a relay coil of at least 60 Ω, with output current rated at 0.3 A."
      },
      {
        "number": "4",
        "name": "OSC",
        "type": "passive",
        "description": "Oscillator C1 connection; flashing frequency is set by R1 and C1 with C1 ≤ 47 µF."
      },
      {
        "number": "5",
        "name": "OSC",
        "type": "passive",
        "description": "Oscillator R1 connection; R1 must be between 6.8 kΩ and 510 kΩ."
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "Supply voltage sense input; a minimized layer resistance from the shunt to pin 6 is recommended for accurate lamp current monitoring."
      },
      {
        "number": "7",
        "name": "LD",
        "type": "input",
        "description": "Lamp failure detection input to comparator K1 with a reference of about 77 mV at VSS = 12 V, monitoring lamp current through external shunt R3 (about 29 mΩ in the example)."
      },
      {
        "number": "8",
        "name": "SI",
        "type": "input",
        "description": "Start input; flashing starts when the voltage at this pin is below VSS − 5 V (flasher switch closed), and the pin must stay above the K2 threshold during bright phase and below K3 during dark phase."
      }
    ],
    "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 configuration diagram on page 2 is garbled in the extracted text, so the physical position o; The datasheet gives one pin configuration and one pin description table that covers both the DIP-8 a; Pin 7 is labeled LD in the pin table and 'Lamp failure detection' in the description, but the electr"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0389,
        "at": "2026-10-18T03:16:29"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603078202310860800",
        "pages": 4,
        "sha256": "26a177ed3d1eb0c4",
        "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": "u2043g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "u2043g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "52b34ea650ca58689f59e17c2779b7669a589c7fe536e66eddc8699ad64a0aeb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UTC Unisonic Tech",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "26a177ed3d1eb0c47feb2aac1890a32a118acae9dcad9f9f79d37cdbd17bc765",
      "rows": [
        {
          "name": "Supply Voltage Range",
          "symbol": "VSS(+10)",
          "kind": "electrical",
          "unit": "V",
          "min": 9,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Frequency Determining Resistor",
          "symbol": "R1",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 6.8,
          "typ": null,
          "max": 510,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Frequency Determining Capacitor",
          "symbol": "C1",
          "kind": "electrical",
          "unit": "μF",
          "min": null,
          "typ": null,
          "max": 47,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Frequency Tolerance",
          "symbol": "Δf1",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Normal flashing, f1 excluding the tolerance of R1 and C1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bright Period",
          "symbol": "Δf1",
          "kind": "electrical",
          "unit": "%",
          "min": 47,
          "typ": null,
          "max": 53,
          "conditions": "Basic frequency f1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bright Period",
          "symbol": "Δf2",
          "kind": "electrical",
          "unit": "%",
          "min": 37,
          "typ": null,
          "max": 45,
          "conditions": "Control frequency f2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Frequency Increase",
          "symbol": "f2",
          "kind": "electrical",
          "unit": "xf1",
          "min": 2.15,
          "typ": null,
          "max": 2.3,
          "conditions": "Lamp outage",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Control Signal Threshold VR3",
          "symbol": "VR3",
          "kind": "electrical",
          "unit": "mV",
          "min": 75,
          "typ": 86,
          "max": 97,
          "conditions": "VSS = 15V Pin 7",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Control Signal Threshold VR3",
          "symbol": "VR3",
          "kind": "electrical",
          "unit": "mV",
          "min": 56,
          "typ": 66,
          "max": 76,
          "conditions": "VSS = 9V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Control Signal Threshold VR3",
          "symbol": "VR3",
          "kind": "electrical",
          "unit": "mV",
          "min": 66,
          "typ": 77,
          "max": 87,
          "conditions": "VSS = 12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Leakage Resistance",
          "symbol": "RLEAK",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 2,
          "typ": null,
          "max": 5,
          "conditions": "10a to GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lamp Load",
          "symbol": "PL",
          "kind": "electrical",
          "unit": "W",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current, dark phase or stand-by",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.5,
          "max": 8,
          "conditions": "Dark phase or stand-by",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current, bright phase",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 7,
          "max": 11,
          "conditions": "Bright phase",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Relay Coil Resistance",
          "symbol": "RL",
          "kind": "electrical",
          "unit": "Ω",
          "min": 60,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Relay Output Reverse Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Start Delay",
          "symbol": "tON",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "First bright phase",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Relay Output Saturation voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "IOUT=150mA, VSS = 9V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Pins 2, 6",
          "symbol": "VSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 16.5,
          "conditions": "Pins 2, 6",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Surge Forward Current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "tp = 0.1ms, Pins 2, 6",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Surge Forward Current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "tp = 2ms, Pins 2, 6",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Surge Forward Current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "tp = 2ms, Pin 8",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current Pin 3",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation SOP-8",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 340,
          "conditions": "TA = 95°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation SOP-8",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 560,
          "conditions": "TA = 60°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 95,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (Junction to Ambient) SOP-8",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "u2043g"
  ],
  "discovery_pitch": "U2043G (UTC Unisonic Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "u2043g.kicad_sym",
    "u2043g.kicad_mod",
    "u2043g.glb",
    "u2043g.step",
    "u2043g.lbr",
    "docs/hero.png",
    "docs/u2043g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "u2043g-hero.glb",
    "u2043g-hero.overlay.json",
    "u2043g-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}