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Ray Set visibility: public 2871747 20d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "uc3843b-hxy",
  "title": "UC3843B-HXY",
  "brief": "HXY MOSFET AC-DC Controllers And 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)",
    "uc3843b-hxy",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC3843B-HXY",
    "manufacturer": "HXY MOSFET",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905625277263872",
    "parts": {
      "symbol": "uc3843b-hxy.kicad_sym",
      "footprint": "uc3843b-hxy.kicad_mod",
      "model_3d": "uc3843b-hxy-hero.glb",
      "model_3d_plain": "uc3843b-hxy-etched.glb",
      "model_3d_step": "uc3843b-hxy-etched.step",
      "model_3d_step_plain": "uc3843b-hxy.step",
      "lbr": "uc3843b-hxy.lbr"
    },
    "distributor_links": {
      "lcsc": "C18198399"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T01:59:58Z",
      "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, usable for loop compensation, with the datasheet giving an error amplifier output sink current absolute maximum of 10 mA."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the error amplifier, normally fed through a resistor divider from the switching supply output; the internal reference on the non-inverting side is 2.50 V (2.42 V to 2.58 V)."
      },
      {
        "number": "3",
        "name": "Sen",
        "type": "input",
        "description": "Current sense input whose voltage sets whether the output is switched off, with a maximum input signal of 1.0 V typical (0.9 V to 1.1 V) and a current sense/voltage feedback input absolute range of -0.3 V to 5.5 V."
      },
      {
        "number": "4",
        "name": "OSC",
        "type": "passive",
        "description": "Oscillator pin where RT connects to VREF and CT connects to GND, setting the switching frequency and maximum duty cycle, with frequency up to 500 kHz."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the controller."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Drives the power MOSFET gate directly, sourcing or sinking peak currents of up to 1 A."
      },
      {
        "number": "7",
        "name": "Vcc",
        "type": "power_in",
        "description": "Positive supply input for the control IC, with an absolute maximum supply voltage of 30 V."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Reference voltage output of 5.00 V typical (4.90 V to 5.10 V at Io = 1 mA), which also supplies the charging current through RT to CT."
      }
    ],
    "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 datasheet is for UC3843B and states it is offered in DIP8 or SOP8 packages, but the pin table is; The pin arrangement diagram on page 1 and the SOP8 package drawing on page 8 are images with no extr; The datasheet is written in Chinese and the pin descriptions were translated, so wording should be c"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0404,
        "at": "2026-10-19T01:57:47"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905625277263872",
        "pages": 9,
        "sha256": "ca0661eca62c4222",
        "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": [
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        "file": "uc3843b-hxy.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc3843b-hxy-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b1ece6cc97ed1c5cc4a5299bb8c4c2301213605d9b851b2b293f9213fb7cc262",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HXY MOSFET",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ca0661eca62c4222a769b3438d844ba257e3e8da916e848141ca6000a4ccefd2",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "Vcc",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "Io",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output energy",
          "symbol": "W",
          "kind": "absolute_maximum",
          "unit": "J",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier output sink current",
          "symbol": "Io",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current sense and voltage feedback input voltage",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "Tj",
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          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Power dissipation",
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          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "Tamb",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Reference output voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.9,
          "typ": 5,
          "max": 5.1,
          "conditions": "Tj=25℃ Io=1mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "⊿Vref",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 6,
          "max": 20,
          "conditions": "12V≤Vi≤25V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "⊿Vref",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 6,
          "max": 25,
          "conditions": "1mA≤Vi≤20mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "mA",
          "min": -30,
          "typ": -100,
          "max": -180,
          "conditions": "Ta=25℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "kHz",
          "min": 47,
          "typ": 52,
          "max": 57,
          "conditions": "Tj=25℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Oscillator voltage stability",
          "symbol": "⊿fosc/V",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "Vcc=12V to 25V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Discharge current",
          "symbol": "Idischg",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.8,
          "typ": 8.3,
          "max": 8.8,
          "conditions": "Tj=25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier reference voltage (feedback input)",
          "symbol": "Vfb",
          "kind": "electrical",
          "unit": "V",
          "min": 2.42,
          "typ": 2.5,
          "max": 2.58,
          "conditions": "Vpin1=2.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier input bias current",
          "symbol": "Ibias",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": -0.1,
          "max": -2,
          "conditions": "Vfb=5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier open-loop voltage gain",
          "symbol": "Gvo1",
          "kind": "electrical",
          "unit": "dB",
          "min": 65,
          "typ": 90,
          "max": null,
          "conditions": "2V≤Vo≤4V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Unity-gain bandwidth",
          "symbol": "BW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.7,
          "typ": 1,
          "max": null,
          "conditions": "Tj=25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 70,
          "max": null,
          "conditions": "12V≤Vi≤25V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier output sink current",
          "symbol": "Isink",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": 12,
          "max": null,
          "conditions": "Vpin2=2.7V,Vpin1=1.1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier output source current",
          "symbol": "Isource",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.5,
          "typ": -1,
          "max": null,
          "conditions": "Vpin2=2.3V,Vpin1=5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier output high level",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": 6.2,
          "max": null,
          "conditions": "Vpin2=2.3V; Rl=15kΩ to Ground",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier output low level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": 1.1,
          "max": null,
          "conditions": "Vpin2=2.7V; Rl=15kΩ to Pin8",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current sense gain",
          "symbol": "Gv",
          "kind": "electrical",
          "unit": "V/V",
          "min": 2.85,
          "typ": 3,
          "max": 3.15,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum input signal",
          "symbol": "V3",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "Vpin1=5V(注 1)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current sense input bias current",
          "symbol": "Ib",
          "kind": "electrical",
          "unit": "μA",
          "min": -2,
          "typ": -10,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay, current sense input to output",
          "symbol": "TPLH(in/off)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": 300,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.4,
          "conditions": "Isink=20mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.6,
          "max": 2.2,
          "conditions": "Isink=200mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 13,
          "typ": 13.5,
          "max": null,
          "conditions": "Isource=20 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 12,
          "typ": 13.5,
          "max": null,
          "conditions": "Isource=200 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage lockout output voltage",
          "symbol": "Vols",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.7,
          "max": 1.2,
          "conditions": "Vcc=6V;Isink=1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage rise time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "Tj=25℃ Cl=1nF(注 3)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage fall time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "Tj=25℃ Cl=1nF(注 3)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Start-up (UVLO turn-on) threshold voltage",
          "symbol": "Vth",
          "kind": "electrical",
          "unit": "V",
          "min": 7.8,
          "typ": 8.4,
          "max": 9,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum operating voltage after turn-on (UVLO turn-off)",
          "symbol": "Vcc(min)",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": 7.6,
          "max": 8.2,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "D (max)",
          "kind": "electrical",
          "unit": "%",
          "min": 94,
          "typ": 96,
          "max": 100,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Start-up current",
          "symbol": "Ist",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.12,
          "max": 0.3,
          "conditions": "Vi=14V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current",
          "symbol": "Ii",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 12,
          "max": 17,
          "conditions": "Vpin2=Vpin3=0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Zener voltage",
          "symbol": "Viz",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": 36,
          "max": null,
          "conditions": "Ii=25mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "en",
          "kind": "electrical",
          "unit": "μV",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "10Hz≤f≤10kHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Oscillator temperature stability",
          "symbol": "fosc/T",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "Ta=Tlow to Thigh",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator peak-to-peak amplitude",
          "symbol": "Vosc",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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