UC3845B-HXY

{
  "slug": "uc3845b-hxy",
  "version": "0.1.0",
  "type": "component",
  "description": "HXY MOSFET AC-DC Controllers & Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power supply chip",
    "uc3845b-hxy",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
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    "uc3845b-hxy.step",
    "uc3845b-hxy.lbr",
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    "docs/uc3845b-hxy-datasheet.pdf",
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    "viewers/footprint.html",
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  "component": {
    "mpn": "UC3845B-HXY",
    "manufacturer": "HXY MOSFET",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a8c3514e16e3b292d2456de1f5645cc5.pdf",
    "parts": {
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      "lbr": "uc3845b-hxy.lbr"
    },
    "distributor_links": {
      "lcsc": "C18198398"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:11:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Output of the error amplifier, which can be used for loop compensation."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the error amplifier, normally driven through a resistor divider from the switching power supply output."
      },
      {
        "number": "3",
        "name": "SENSE",
        "type": "input",
        "description": "Input for a voltage proportional to the sensor current, which the PWM uses to terminate output switch conduction; absolute maximum range is -0.3 V to 5.5 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Timing pin where RT connected to Vref and CT connected to ground set the oscillator frequency and maximum output duty cycle, with operation up to 1.0 MHz."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the controller."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Directly drives the power MOSFET gate with up to 1.0 A peak source and sink current, at half the oscillator frequency."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin for the control IC; absolute maximum supply voltage is 30 V."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5.0 V reference output that supplies the charging current through RT to CT and can source more than 20 mA to external circuits."
      }
    ],
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        "consensus": "skipped (clean text read)",
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        "guard_notes": [],
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        "cost_usd": 0.0008,
        "at": "2026-10-27T01:10:35"
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        "pages": 12,
        "sha256": "e1410c549d244d35",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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}