UC3843BD1G

{
  "slug": "uc3843bd1g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi DC-DC Controllers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "uc3843bd1g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "uc3843bd1g.glb",
    "uc3843bd1g.step",
    "uc3843bd1g.lbr",
    "docs/hero.png",
    "docs/uc3843bd1g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "uc3843bd1g-hero.overlay.json",
    "uc3843bd1g-etched.glb"
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  "component": {
    "mpn": "UC3843BD1G",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/uc3843bd1-d.pdf",
    "parts": {
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      "footprint": "uc3843bd1g.kicad_mod",
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      "model_3d_step": "uc3843bd1g-etched.step",
      "model_3d_step_plain": "uc3843bd1g.step",
      "lbr": "uc3843bd1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C160679",
      "digikey": "UC3843BD1GOS-ND",
      "mouser": "863-UC3843BD1G"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:16:38Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UC3843BD1GOS-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-UC3843BD1G",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Compensation",
        "type": "output",
        "description": "Error amplifier output made available for loop compensation; rated -0.3 to +7.2 V with 10 mA maximum error amp sink current."
      },
      {
        "number": "2",
        "name": "Voltage Feedback",
        "type": "input",
        "description": "Inverting input of the error amplifier, normally connected to the switching power supply output through a resistor divider; rated -0.3 to +5.5 V."
      },
      {
        "number": "3",
        "name": "Current Sense",
        "type": "input",
        "description": "Receives a voltage proportional to inductor current, which the PWM uses to terminate output switch conduction; rated -0.3 to +5.5 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator 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": "Directly drives the gate of a power MOSFET, sourcing and sinking peak currents up to 1.0 A."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply of the control IC; maximum rating 30 V."
      },
      {
        "number": "8",
        "name": "Vref",
        "type": "power_out",
        "description": "Reference output (5.0 V block) that provides charging current for capacitor CT through resistor RT."
      }
    ],
    "provenance": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: RT/CT is both a timing-capacitor charge/discharge node and an oscillator input; 'passive' chosen, da; Compensation is described as the error amp output; classed as output though it is also used as a com"
        ],
        "pages_sent": 14,
        "cost_usd": 0.1667,
        "at": "2026-10-23T09:16:16"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/uc3843bd1-d.pdf",
        "pages": 25,
        "sha256": "73603e023e6d2fe7",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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}