UC2854DW

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2854dw",
  "title": "UC2854DW",
  "brief": "Texas Instruments AC-DC Controllers & Regulators, SOIC-16-300mil. 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 supply chip",
    "uc2854dw",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC2854DW",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Power Supply Chip",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc2854bm",
    "parts": {
      "symbol": "uc2854dw.kicad_sym",
      "footprint": "uc2854dw.kicad_mod",
      "model_3d": "uc2854dw-hero.glb",
      "model_3d_plain": "uc2854dw.glb",
      "model_3d_step": "uc2854dw-etched.step",
      "model_3d_step_plain": "uc2854dw.step",
      "lbr": "uc2854dw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2866967",
      "digikey": "296-11195-5-ND",
      "mouser": "595-UC2854DW"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T22:01:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-11195-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2854DW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference to which all voltages are measured; VCC and VREF must be bypassed directly to GND with a 0.1-µF or larger ceramic capacitor."
      },
      {
        "number": "2",
        "name": "PKLMT",
        "type": "input",
        "description": "Peak current limit with a 0-V threshold, connected to the negative voltage on the current-sense resistor and offset to GND through a resistor to VREF."
      },
      {
        "number": "3",
        "name": "CAOUT",
        "type": "output",
        "description": "Current amplifier output that swings close to GND and drives an NPN emitter-follower pullup with an 8-kΩ resistor to ground, and remains active when the IC is disabled."
      },
      {
        "number": "4",
        "name": "ISENSE",
        "type": "input",
        "description": "Inverting input of the current amplifier that stays functional down to and below GND but must not be taken below -0.5 V because of protection diodes to GND."
      },
      {
        "number": "5",
        "name": "MULTOUT",
        "type": "bidirectional",
        "description": "Multiplier output and non-inverting current-amplifier input, a high-impedance node that must not be taken below -0.5 V."
      },
      {
        "number": "6",
        "name": "IAC",
        "type": "input",
        "description": "Current input to the analog multiplier with a nominal 6-V voltage held internally, set by a resistor from the rectified line and a resistor to VREF."
      },
      {
        "number": "7",
        "name": "VAOUT",
        "type": "output",
        "description": "Voltage amplifier output internally limited to approximately 5.8 V, with levels below 1 V inhibiting the multiplier output."
      },
      {
        "number": "8",
        "name": "VRMS",
        "type": "input",
        "description": "RMS line voltage input that must stay between 1.5 V and 3.5 V for best control."
      },
      {
        "number": "9",
        "name": "VREF",
        "type": "power_out",
        "description": "Output of an accurate 7.5-V reference capable of delivering 10 mA, internally short-circuit current limited, and held at 0 V when VCC or ENA is low."
      },
      {
        "number": "10",
        "name": "ENA",
        "type": "input",
        "description": "Logic enable that must reach the 2.4 V to 2.7 V rising threshold (2.55 V typical) to enable the PWM output, reference and oscillator, and should be tied to 5 V or pulled high through 22 kΩ when unused."
      },
      {
        "number": "11",
        "name": "VSENSE",
        "type": "input",
        "description": "Voltage amplifier inverting input, normally connected to the feedback network and the boost converter output through a divider."
      },
      {
        "number": "12",
        "name": "RSET",
        "type": "input",
        "description": "Resistor from RSET to GND sets the oscillator charging current and limits multiplier output current to no more than 3.75 V divided by this resistor."
      },
      {
        "number": "13",
        "name": "SS",
        "type": "input",
        "description": "Soft-start pin that stays at GND while the device is disabled or VCC is low, and pulls up to over 8 V through an internal 14-mA source when VCC is valid and the IC is enabled."
      },
      {
        "number": "14",
        "name": "CT",
        "type": "input",
        "description": "Oscillator timing capacitor; a capacitor from CT to GND sets the PWM oscillator frequency per the datasheet equation."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply that must be a stable source delivering at least 20 mA above 17 V for normal operation, bypassed directly to GND, and inhibited below the undervoltage-lockout thresholds."
      },
      {
        "number": "16",
        "name": "GTDRV",
        "type": "output",
        "description": "Totem-pole MOSFET gate driver output internally clamped to 15 V, which requires a series gate resistor of at least 5 Ω."
      }
    ],
    "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: Pin numbers are taken from the 16-pin SOIC/CDIP/PDIP listing on page 3 and cross-checked against the; The datasheet lists MULTOUT as 'I/O'; it is mapped to KiCad 'bidirectional'. The description cites t; VREF is an output of a 7.5-V reference, mapped to KiCad 'power_out' as a regulated supply output. Th"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0926,
        "at": "2026-10-10T22:01:00"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc2854bm",
        "pages": 31,
        "sha256": "051276b5d66559af",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "file": "uc2854dw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2854dw-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": "02737542de5b5ce2c8dfe84bf13094297db9782428fd5885e6c9dec269b55e2b",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16-300mil",
      "Category": "Power Supply Chip",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "uc2854dw"
  ],
  "discovery_pitch": "UC2854DW (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "uc2854dw.lbr",
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    "docs/uc2854dw-datasheet.pdf",
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    "uc2854dw-hero.overlay.json"
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  "visibility": {
    "public": true
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}