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Ray Set visibility: public 3d0d853 12d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "uc3854bdw",
  "title": "UC3854BDW",
  "brief": "Texas Instruments AC-DC Controllers And Regulators, SOIC-16-300mil. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "uc3854bdw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC3854BDW",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3854a",
    "parts": {
      "symbol": "uc3854bdw.kicad_sym",
      "footprint": "uc3854bdw.kicad_mod",
      "model_3d": "uc3854bdw-hero.glb",
      "model_3d_plain": "uc3854bdw-etched.glb",
      "model_3d_step": "uc3854bdw-etched.step",
      "model_3d_step_plain": "uc3854bdw.step",
      "lbr": "uc3854bdw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2872691"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T17:08:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; all bypass and timing capacitors connected to GND should have leads as short and direct as possible."
      },
      {
        "number": "2",
        "name": "PKLMT",
        "type": "input",
        "description": "Peak limit input with 0.0 V threshold; connect to negative voltage on current sense resistor."
      },
      {
        "number": "3",
        "name": "CAO",
        "type": "output",
        "description": "Current amplifier output serving as one of the PWM duty-cycle comparator inputs; output swings from 0.1 V to 7.5 V."
      },
      {
        "number": "4",
        "name": "ISENSE",
        "type": "input",
        "description": "Inverting input to current amplifier; inputs must not go below -0.5 V as they are protected with diodes to GND."
      },
      {
        "number": "5",
        "name": "MOUT",
        "type": "bidirectional",
        "description": "Multiplier output and current amplifier non-inverting input combined; high-impedance node with IMOUT ≤ 2 × IAC."
      },
      {
        "number": "6",
        "name": "IAC",
        "type": "input",
        "description": "Current input to multiplier, proportional to instantaneous line voltage; only multiplier input for line voltage sensing."
      },
      {
        "number": "7",
        "name": "VAO",
        "type": "input",
        "description": "Voltage amplifier output."
      },
      {
        "number": "8",
        "name": "VRMS",
        "type": "input",
        "description": "RMS voltage input to multiplier circuitry."
      },
      {
        "number": "9",
        "name": "VREF",
        "type": "output",
        "description": "Reference voltage output used to set peak limit point and as internal reference; must be present for device operation."
      },
      {
        "number": "10",
        "name": "ENA",
        "type": "input",
        "description": "Enable input; device begins operating above 2.65 V nominal and shuts off below 2.15 V nominal."
      },
      {
        "number": "11",
        "name": "VSENSE",
        "type": "input",
        "description": "Output feedback input that goes into voltage error amplifier; amplifier output is one of multiplier circuit inputs."
      },
      {
        "number": "12",
        "name": "RSET",
        "type": "input",
        "description": "Programmable resistor from RSET to ground sets oscillator charging current and multiplier limit."
      },
      {
        "number": "13",
        "name": "SS",
        "type": "input",
        "description": "Soft-start pin; remains at GND when disabled, pulled up to over 3 V by internal 14 µA source when enabled."
      },
      {
        "number": "14",
        "name": "CT",
        "type": "input",
        "description": "Capacitor from CT to GND sets the PWM oscillator frequency."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply rail."
      },
      {
        "number": "16",
        "name": "GTDRV",
        "type": "output",
        "description": "PWM gate driver output (1.5 A peak totem-pole MOSFET driver); use minimum 5 Ω series gate resistor to prevent overshoot."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3854a",
        "pages": 29,
        "sha256": "20dbe220bdb2dfe8",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "uc3854bdw.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": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc3854bdw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0,
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        "sha256": "dfd921c24daf7993f44e02e62b45d9c947e53703da4086a96d0a1b230b4bbd62",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16-300mil",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "appearance": {
      "contacts": {
        "quote": "14,400 square mils use the following values, dual-in-line, 11°C/W; flat pack and pin grid array, 10°C/W.are at the end of each trace. (2) θJA (junction-to-ambient) applies to devices mounted to five s",
        "page": 3,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "20dbe220bdb2dfe85d4414ae66e4da9bf1bc20b58934331665b4832f20e8f558"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "20dbe220bdb2dfe85d4414ae66e4da9bf1bc20b58934331665b4832f20e8f558",
      "rows": [
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          "name": "Supply current, off",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 250,
          "max": 400,
          "conditions": "CAO = 0 V, VAO = 0 V, VCC = VUVLO–0.3 V",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "Supply current, on",
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          "typ": 12,
          "max": 18,
          "conditions": "",
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        },
        {
          "name": "VCC turn-on threshold voltage (UCx854B)",
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          "typ": 10.5,
          "max": 11.2,
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        {
          "name": "VCC turn-off threshold voltage (UCx854B)",
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        {
          "name": "VCC hysteresis (UCx854B)",
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          "min": 0.1,
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        {
          "name": "VCC clamp",
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          "min": 18,
          "typ": 20,
          "max": 22,
          "conditions": "IVCC = IVCC(on) + 5 mA",
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          "name": "Input voltage (voltage amplifier)",
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        {
          "name": "Open loop gain (voltage amplifier)",
          "symbol": "",
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          "unit": "dB",
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          "typ": 100,
          "max": null,
          "conditions": "2 V ≤ VOUT ≤ 5 V",
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          "source": "datasheet"
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        {
          "name": "VOH high-level output voltage (voltage amplifier)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "ILOAD = –500 µA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VOL low-level output voltage (voltage amplifier)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": 0.5,
          "conditions": "ILOAD = 500 µA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ISC output short-circuit current (voltage amplifier)",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.5,
          "typ": null,
          "max": 3.5,
          "conditions": "VOUT = 0 V",
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        {
          "name": "Input offset voltage (current amplifier), TA = 25°C",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
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          "typ": null,
          "max": 0,
          "conditions": "VCM = 0 V, TA = 25°C",
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          "source": "datasheet"
        },
        {
          "name": "Input offset voltage (current amplifier), overtemperature",
          "symbol": "",
          "kind": "electrical",
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          "min": -5.5,
          "typ": null,
          "max": 0,
          "conditions": "VCM = 0 V, Overtemperature",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ISENSE input bias current",
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          "kind": "electrical",
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          "conditions": "VCM = 0 V",
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        {
          "name": "Open loop gain (current amplifier)",
          "symbol": "",
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          "unit": "dB",
          "min": 80,
          "typ": 110,
          "max": null,
          "conditions": "2 V ≤ VOUT = 6 V",
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          "source": "datasheet"
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        {
          "name": "VOH high-level output voltage (current amplifier)",
          "symbol": "VOH",
          "kind": "electrical",
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          "min": 8,
          "typ": null,
          "max": null,
          "conditions": "ILOAD = –500 µA",
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          "source": "datasheet"
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        {
          "name": "VOL low-level output voltage (current amplifier)",
          "symbol": "VOL",
          "kind": "electrical",
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          "min": null,
          "typ": 0.3,
          "max": 0.5,
          "conditions": "ILOAD = 500 µA",
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          "source": "datasheet"
        },
        {
          "name": "ISC output short-circuit current (current amplifier)",
          "symbol": "ISC",
          "kind": "electrical",
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          "min": 1.5,
          "typ": null,
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          "conditions": "VOUT = 0 V",
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        {
          "name": "Common mode rejection range",
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          "kind": "electrical",
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          "min": -0.3,
          "typ": null,
          "max": 5,
          "conditions": "",
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        },
        {
          "name": "Gain bandwidth product (current amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 3,
          "typ": 5,
          "max": null,
          "conditions": "f IN = 100 kHz, 10 mVp-p",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference output voltage, TA = 25°C",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 7.4,
          "typ": 7.5,
          "max": 7.6,
          "conditions": "IREF = 0 mA, TA = 25°C",
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        },
        {
          "name": "Reference output voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 7.35,
          "typ": 7.5,
          "max": 7.65,
          "conditions": "IREF = 0 mA",
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        {
          "name": "Reference load regulation",
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          "kind": "electrical",
          "unit": "mV",
          "min": 0,
          "typ": 8,
          "max": 20,
          "conditions": "1 mA ≤ IREF ≤ 10 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference line regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 0,
          "typ": 14,
          "max": 25,
          "conditions": "12 V ≤ VCC ≤ 18 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference short circuit current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 25,
          "typ": 35,
          "max": 60,
          "conditions": "VREF = 0 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator initial accuracy",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 85,
          "typ": 100,
          "max": 115,
          "conditions": "TA = 25°C",
          "source_page": 5,
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        },
        {
          "name": "Oscillator total variation",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 80,
          "typ": null,
          "max": 120,
          "conditions": "Line, temperature",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillator ramp amplitude (peak-to-peak)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.9,
          "typ": null,
          "max": 5.9,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillator ramp valley voltage",
          "symbol": "",
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          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 1.3,
          "conditions": "",
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        },
        {
          "name": "Enable threshold voltage",
          "symbol": "",
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          "min": 2.35,
          "typ": 2.55,
          "max": 2.8,
          "conditions": "",
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        },
        {
          "name": "Enable hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 500,
          "typ": 600,
          "max": null,
          "conditions": "VFAULT = 2.5 V",
          "source_page": 5,
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        },
        {
          "name": "Enable input bias current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -5,
          "typ": null,
          "max": -2,
          "conditions": "VENA = 0 V",
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        },
        {
          "name": "Soft-start charge current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 10,
          "typ": 14,
          "max": 24,
          "conditions": "VSS = 2.5 V",
          "source_page": 5,
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        },
        {
          "name": "Peak limit offset voltage",
          "symbol": "",
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          "min": -15,
          "typ": null,
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        {
          "name": "Peak limit offset current",
          "symbol": "",
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          "unit": "µA",
          "min": -200,
          "typ": null,
          "max": -100,
          "conditions": "VPKLMIT = –0.1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Multiplier output current, IA limited",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -220,
          "typ": -200,
          "max": -170,
          "conditions": "IAC = 100 µA, VRMS = 1 V, RSET = 10 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Multiplier output current, zero",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -2,
          "typ": -0.2,
          "max": 2,
          "conditions": "IAC = 0 µA, RSET = 10 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Multiplier output current, power limited",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -230,
          "typ": -200,
          "max": -170,
          "conditions": "VRMS = 1.5 V, Va = 6 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Multiplier gain constant",
          "symbol": "K",
          "kind": "electrical",
          "unit": "A/A",
          "min": -1.1,
          "typ": -1,
          "max": -0.9,
          "conditions": "VRMS = 1.5 V, Va = 6 V, TA = 25°C",
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