UCC28512DWR

{
  "slug": "ucc28512dwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc28512dwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "README.md",
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    "ucc28512dwr.kicad_mod",
    "ucc28512dwr.glb",
    "ucc28512dwr.step",
    "ucc28512dwr.lbr",
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    "docs/ucc28512dwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc28512dwr-hero.glb",
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  "component": {
    "mpn": "UCC28512DWR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucc28512",
    "parts": {
      "symbol": "ucc28512dwr.kicad_sym",
      "footprint": "ucc28512dwr.kicad_mod",
      "model_3d": "ucc28512dwr-hero.glb",
      "model_3d_plain": "ucc28512dwr.glb",
      "model_3d_step": "ucc28512dwr-etched.step",
      "model_3d_step_plain": "ucc28512dwr.step",
      "lbr": "ucc28512dwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2860835",
      "digikey": "UCC28512DWR-ND",
      "mouser": "595-UCC28512DWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T07:14:38Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UCC28512DWR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCC28512DWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VAOUT",
        "type": "bidirectional",
        "description": "Output of the PFC transconductance voltage amplifier, operating between GND and 5.5 V maximum; when it falls below 0.33 V the zero power detect comparator turns off the PFC gate drive."
      },
      {
        "number": "2",
        "name": "RT",
        "type": "input",
        "description": "Oscillator programming pin; a resistor from RT to GND sets the oscillator frequency measured at CT_BUFF, with a recommended range of 45 kΩ to 500 kΩ for 600 kHz to 65 kHz."
      },
      {
        "number": "3",
        "name": "VSENSE",
        "type": "input",
        "description": "Inverting input to the PFC transconductance voltage amplifier, also connected to the OVP, ENABLE and UVLO2 comparators."
      },
      {
        "number": "4",
        "name": "D_MAX",
        "type": "input",
        "description": "Positive input that sets the PWM stage maximum duty cycle; duty ratio is linear with D_MAX between 0.09 and 0.90, and a voltage below 0.7 V sets DMAX to 0."
      },
      {
        "number": "5",
        "name": "CT_BUFF",
        "type": "output",
        "description": "Internally buffered 4-V PWM oscillator ramp output used for slope compensation through a resistor to ISENSE2, able to drive a typical 500 µA resistive load."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground for the IC; all measured voltages are referenced to this pin, VCC and VREF bypass capacitors return here, and PWRGND must be externally connected to it."
      },
      {
        "number": "7",
        "name": "VERR",
        "type": "input",
        "description": "Feedback error voltage input for the PWM stage that controls the GT2 duty cycle; it is clamped to a maximum of 3 V and can demand 100% duty cycle."
      },
      {
        "number": "8",
        "name": "ISENSE2",
        "type": "input",
        "description": "Input for PWM stage current sense and peak current limit, with the peak limit threshold set to 1.3 V for peak current mode control."
      },
      {
        "number": "9",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin that should be connected to a stable source of at least 20 mA between 12 V and 17 V for normal operation, bypassed to GND with a 0.1 µF or larger ceramic capacitor."
      },
      {
        "number": "10",
        "name": "GT2",
        "type": "output",
        "description": "PWM stage gate drive output, a 2-A peak source and 3-A peak sink totem-pole MOSFET driver."
      },
      {
        "number": "11",
        "name": "PWRGND",
        "type": "power_in",
        "description": "Ground for the GT1 and GT2 output drivers, which must be tied to GND externally via a single Kelvin connection."
      },
      {
        "number": "12",
        "name": "GT1",
        "type": "output",
        "description": "PFC stage gate drive output, a 2-A peak source and 3-A peak sink totem-pole MOSFET driver that is disabled unless VCC is outside UVLO and VREF is on."
      },
      {
        "number": "13",
        "name": "SS2",
        "type": "input",
        "description": "Soft-start pin for the PWM stage; a capacitor to GND sets the soft-start time using a 10.5 µA charge current to 3 V, and SS2 quickly discharges on disable or UVLO2 dropout."
      },
      {
        "number": "14",
        "name": "PKLMT",
        "type": "input",
        "description": "Voltage input to the PFC peak current limit comparator, with a threshold of 0 V, typically level-shifted from VREF through a resistor divider."
      },
      {
        "number": "15",
        "name": "CAOUT",
        "type": "output",
        "description": "Output of the PFC wide-bandwidth current amplifier that commands the PFC PWM comparator duty cycle, with current loop compensation connected between CAOUT and MOUT."
      },
      {
        "number": "16",
        "name": "ISENSE1",
        "type": "input",
        "description": "Non-inverting input of the PFC stage current amplifier, connected through a resistor to the grounded side of the PFC current sense resistor."
      },
      {
        "number": "17",
        "name": "MOUT",
        "type": "bidirectional",
        "description": "High-impedance PFC multiplier current output internally tied to the current amplifier inverting input; a resistor to the ungrounded end of the PFC sense resistor sets the PFC power range."
      },
      {
        "number": "18",
        "name": "IAC",
        "type": "input",
        "description": "Multiplier current input proportional to the instantaneous rectified line voltage, with a recommended maximum IAC current of 500 µA."
      },
      {
        "number": "19",
        "name": "VFF",
        "type": "input",
        "description": "Voltage feedforward pin that sources an IAC/2 current, which must be externally filtered by a single-pole R/C to GND; at low line VFF should be set to 1.4 V."
      },
      {
        "number": "20",
        "name": "VREF",
        "type": "power_out",
        "description": "Output of an accurate 7.5-V reference that powers internal circuitry and can deliver over 10 mA, current limited to 25 mA, bypassed with a 0.1 µF to 10 µF ceramic capacitor."
      }
    ],
    "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, names and descriptions come from the family-wide Terminal Functions table (UCC2851x) on; KiCad type mapping: the datasheet's I/O column was used for direction, with I/O mapped to bidirectio; VFF sources an IAC/2 current per the pin description, but the datasheet's I/O column lists it as 'I'"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0752,
        "at": "2026-10-12T07:14:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc28512",
        "pages": 42,
        "sha256": "3a9542f6a46c942b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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    },
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc28512dwr-etched.step",
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        "sha256": "a742b2fb75f077ccd67bc933e04f6f7b6220ad43d402bdb2329b6a187cda8911",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}