UC3854BDW

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  "slug": "uc3854bdw",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-16-300mil. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
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    "power management (pmic)",
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  "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",
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    "distributor_links": {
      "lcsc": "C2872691"
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    "distributor_check": {
      "checked_at": "2026-10-21T17:08:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
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    },
    "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."
      }
    ],
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3854a",
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      "pins": {
        "total": 16,
        "described": 16,
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