UC2843BDR2G

{
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  "type": "component",
  "slug": "uc2843bdr2g",
  "title": "UC2843BDR2G",
  "brief": "onsemi AC-DC Controllers And 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 (pmic)",
    "uc2843bdr2g",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC2843BDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590222164113985536",
    "parts": {
      "symbol": "uc2843bdr2g.kicad_sym",
      "footprint": "uc2843bdr2g.kicad_mod",
      "model_3d": "uc2843bdr2g-hero.glb",
      "model_3d_plain": "uc2843bdr2g-etched.glb",
      "model_3d_step": "uc2843bdr2g-etched.step",
      "model_3d_step_plain": "uc2843bdr2g.step",
      "lbr": "uc2843bdr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C236262",
      "digikey": "UC2843BDR2GOSTR-ND",
      "mouser": "863-UC2843BDR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:59:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UC2843BDR2GOSTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-UC2843BDR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Compensation",
        "type": "output",
        "description": "Error amplifier output made available for loop compensation (Vcomp rated -0.3 to +7.2 V, error amp output sink current max 10 mA)."
      },
      {
        "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 power supply output through a resistor divider (-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 (-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 output duty cycle are set by resistor RT to Vref and capacitor CT to ground, 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 effects 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": "Output stage supply that sets the output high state (VOH); a separate source connection reduces switching noise on the control circuitry (max 30 V)."
      },
      {
        "number": "12",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply of the control IC (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": "5.0 V 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-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 page 7 pin table renders the NC pin list as '2,4,6,1' followed by '3' on a separate line; this w; The datasheet covers UC3842B, UC3843B, UC2842B and UC2843B in several packages. The SOIC-14 (D suffi; The schema has no field for headline electrical specs, so none are included in this output. The data",
          "1/14 pin names appear NOWHERE in the datasheet text: ['8:PGND@p7']"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0961,
        "at": "2026-10-18T01:57:04"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590222164113985536",
        "pages": 25,
        "sha256": "73ecc085414cb85f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-14",
      "Category": "Power Management (PMIC)",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.95,
          "typ": 5,
          "max": 5.05,
          "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 Output Variation over Line, Load, and Temperature",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.9,
          "typ": null,
          "max": 5.1,
          "conditions": "Over line, load and temperature (UC284XB row)",
          "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 (TJ = 25°C)",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 49,
          "typ": 52,
          "max": 55,
          "conditions": "TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency (TA = Tlow to Thigh)",
          "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": "Discharge Current (TJ = 25°C)",
          "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": "Discharge Current (TA = Tlow to Thigh)",
          "symbol": "Idischg",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.5,
          "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": 2.45,
          "typ": 2.5,
          "max": 2.55,
          "conditions": "VO = 2.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current (error amplifier)",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -0.1,
          "max": -1,
          "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": "Power Supply Rejection Ratio (error amplifier)",
          "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": "Output Current Sink",
          "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": "Output Current Source",
          "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": "Output Voltage High State",
          "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": "Output Voltage Low State",
          "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": "Input Bias Current (current sense)",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -2,
          "max": -10,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay (Current Sense Input to Output)",
          "symbol": "tPLH(In/Out)",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": 300,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Low State (ISink = 20 mA)",
          "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 (ISink = 200 mA)",
          "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 (ISource = 20 mA)",
          "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 (ISource = 200 mA)",
          "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": "electrical",
          "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": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "CL = 1.0 nF, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Startup Threshold (VCC), UCX843B row",
          "symbol": "Vth",
          "kind": "electrical",
          "unit": "V",
          "min": 7.8,
          "typ": 8.4,
          "max": 9,
          "conditions": "UCX843B, BV, D row",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Operating Voltage After Turn-On (VCC), UCX843B row",
          "symbol": "VCC(min)",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": 7.6,
          "max": 8.2,
          "conditions": "UCX843B, BV, D row",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Duty Cycle Maximum",
          "symbol": "DC(max)",
          "kind": "electrical",
          "unit": "%",
          "min": 94,
          "typ": 96,
          "max": null,
          "conditions": "UC284XB, UC384XB, UC2843D",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Duty Cycle Minimum",
          "symbol": "DC(min)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current Startup (VCC = 6.5 V, UCX843B row)",
          "symbol": "ICC + IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.5,
          "conditions": "Startup, VCC = 6.5 V for UCX843B, UC2843D",
          "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 (VCC, VC)",
          "symbol": "VCC, VC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Zero series impedance, see also Total Device spec",
          "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",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Source or sink",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Energy (Capacitive Load per Cycle)",
          "symbol": "W",
          "kind": "absolute_maximum",
          "unit": "J",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Capacitive load per cycle",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current Sense, Voltage Feedback, Vref and RT/CT Inputs",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Compensation",
          "symbol": "Vcomp",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output",
          "symbol": "Vo",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Max VCC or VC + 0.3 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Output Sink Current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Power Dissipation @ TA = 25°C (D suffix SOIC-14)",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 862,
          "conditions": "D suffix, plastic package, SOIC-14, TA = 25°C",
          "source_page": 2,
          "source": "datasheet"
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