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Ray Set visibility: public 1b7a4bd 15d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "uc3842bdr2g",
  "title": "UC3842BDR2G",
  "brief": "onsemi AC-DC Controllers & Regulators, SOIC-14. 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 ics",
    "uc3842bdr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC3842BDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Power Management ICs",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/uc3842b-d.pdf",
    "parts": {
      "symbol": "uc3842bdr2g.kicad_sym",
      "footprint": "uc3842bdr2g.kicad_mod",
      "model_3d": "uc3842bdr2g-hero.glb",
      "model_3d_plain": "uc3842bdr2g-etched.glb",
      "model_3d_step": "uc3842bdr2g-etched.step",
      "model_3d_step_plain": "uc3842bdr2g.step",
      "lbr": "uc3842bdr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C108535"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:06:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 802 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Compensation",
        "type": "output",
        "description": "Error amplifier output made available for loop compensation; absolute maximum -0.3 to +7.2 V."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; pin is not internally connected."
      },
      {
        "number": "3",
        "name": "Voltage Feedback",
        "type": "input",
        "description": "Inverting input of the error amplifier, normally connected to the supply output through a resistor divider; maximum -0.3 to +5.5 V."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; pin is not internally connected."
      },
      {
        "number": "5",
        "name": "Current Sense",
        "type": "input",
        "description": "Input for a voltage proportional to inductor current, used by the PWM to terminate output switch conduction; maximum -0.3 to +5.5 V."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; pin is not internally connected."
      },
      {
        "number": "7",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator frequency and maximum duty cycle are set by resistor RT to Vref and capacitor CT to ground, with operation to 500 kHz possible."
      },
      {
        "number": "8",
        "name": "Power Ground",
        "type": "power_in",
        "description": "Separate power ground return connected back to the power source, used to reduce switching transient noise on the control circuitry."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Control circuitry ground return, connected back to the power source ground."
      },
      {
        "number": "10",
        "name": "Output",
        "type": "output",
        "description": "Directly drives the gate of a power MOSFET, sourcing and sinking peak currents up to 1.0 A."
      },
      {
        "number": "11",
        "name": "VC",
        "type": "power_in",
        "description": "Sets the output high state (VOH) by the applied voltage; a separate source can reduce switching transient noise on the control circuitry; maximum 30 V."
      },
      {
        "number": "12",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply of the control IC; absolute maximum 30 V."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; pin is not internally connected."
      },
      {
        "number": "14",
        "name": "Vref",
        "type": "power_out",
        "description": "Reference output that provides charging current for capacitor CT through resistor RT."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The NC pin row in the pin function table is garbled in the extracted text ('2,4,6,1 3'). It was read; The datasheet does not give electrical types. Compensation was assigned as output (error amp output)"
        ],
        "pages_sent": 14,
        "cost_usd": 0.1805,
        "at": "2026-10-23T21:04:41"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/uc3842b-d.pdf",
        "pages": 25,
        "sha256": "09af16bf51bacafc",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "uc3842bdr2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          8.7,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc3842bdr2g-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": "cc4fc4e9d7d63c0b9e2320646262ec94e55687e7b2dfbcd7869f64eac9eb8115",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-14",
      "Category": "Power Management ICs",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "09af16bf51bacafcb7f8ffde15e45cb127b1170f39761ae5d11def7c955efc88",
      "rows": [
        {
          "name": "Reference Output Voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.9,
          "typ": 5,
          "max": 5.1,
          "conditions": "IO = 1.0 mA, TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "Regline",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 20,
          "conditions": "VCC = 12 V to 25 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 3,
          "max": 25,
          "conditions": "IO = 1.0 mA to 20 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Total Reference Output Variation",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.82,
          "typ": null,
          "max": 5.18,
          "conditions": "Over line, load, and temperature",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Short Circuit Current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": -30,
          "typ": -85,
          "max": -180,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 49,
          "typ": 52,
          "max": 55,
          "conditions": "TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency over Temperature",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 48,
          "typ": null,
          "max": 56,
          "conditions": "TA = Tlow to Thigh",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency, RT = 6.2 k, CT = 1.0 nF",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 225,
          "typ": 250,
          "max": 275,
          "conditions": "TJ = 25°C (RT = 6.2 k, CT = 1.0 nF)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Frequency Change with Voltage",
          "symbol": "fOSC/V",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "VCC = 12 V to 25 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Discharge Current",
          "symbol": "Idischg",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.8,
          "typ": 8.3,
          "max": 8.8,
          "conditions": "VOSC = 2.0 V, TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Discharge Current over Temperature",
          "symbol": "Idischg",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.6,
          "typ": null,
          "max": 8.8,
          "conditions": "VOSC = 2.0 V, TA = Tlow to Thigh",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage Feedback Input",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 2.42,
          "typ": 2.5,
          "max": 2.58,
          "conditions": "VO = 2.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Input Bias Current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -0.1,
          "max": -2,
          "conditions": "VFB = 5.0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Open Loop Voltage Gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 65,
          "typ": 90,
          "max": null,
          "conditions": "VO = 2.0 V to 4.0 V",
          "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°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp PSRR",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 70,
          "max": null,
          "conditions": "VCC = 12 V to 25 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Output Sink Current",
          "symbol": "ISink",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": 12,
          "max": null,
          "conditions": "VO = 1.1 V, VFB = 2.7 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Output Source Current",
          "symbol": "ISource",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.5,
          "typ": -1,
          "max": null,
          "conditions": "VO = 5.0 V, VFB = 2.3 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Output Voltage High",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": 6.2,
          "max": null,
          "conditions": "RL = 15 k to ground, VFB = 2.3 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Output Voltage Low",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": 1.1,
          "conditions": "RL = 15 k to Vref, VFB = 2.7 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current Sense Input Voltage Gain",
          "symbol": "AV",
          "kind": "electrical",
          "unit": "V/V",
          "min": 2.85,
          "typ": 3,
          "max": 3.15,
          "conditions": "Notes 5 and 6",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Current Sense Input Threshold",
          "symbol": "Vth",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "Note 5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Sense Input Bias Current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -2,
          "max": -10,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay, Current Sense to Output",
          "symbol": "tPLH(In/Out)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": 300,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Low State",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.4,
          "conditions": "ISink = 20 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Low State",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.6,
          "max": 2.2,
          "conditions": "ISink = 200 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage High State",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 13,
          "typ": 13.5,
          "max": null,
          "conditions": "ISource = 20 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage High State",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 12,
          "typ": 13.4,
          "max": null,
          "conditions": "ISource = 200 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage with UVLO Activated",
          "symbol": "VOL(UVLO)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 1.1,
          "conditions": "VCC = 6.0 V, ISink = 1.0 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Rise Time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "CL = 1.0 nF, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Fall Time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "CL = 1.0 nF, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Startup Threshold (UCX842B)",
          "symbol": "Vth",
          "kind": "electrical",
          "unit": "V",
          "min": 14.5,
          "typ": 16,
          "max": 17.5,
          "conditions": "VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Operating Voltage After Turn-On (UCX842B)",
          "symbol": "VCC(min)",
          "kind": "electrical",
          "unit": "V",
          "min": 8.5,
          "typ": 10,
          "max": 11.5,
          "conditions": "VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "DC(max)",
          "kind": "electrical",
          "unit": "%",
          "min": 94,
          "typ": 96,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Duty Cycle",
          "symbol": "DC(min)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Startup",
          "symbol": "ICC + IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.5,
          "conditions": "Startup VCC 14 V for UCX842B",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Zener Voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": 36,
          "max": null,
          "conditions": "ICC = 25 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bias and Driver Voltages",
          "symbol": "VCC, VC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Zero series impedance",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Total Power Supply and Zener Current",
          "symbol": "ICC + IZ",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current, Source or Sink",
          "symbol": "IO",
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