UCC28250PWR

{
  "slug": "ucc28250pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power management (pmic)",
    "ucc28250pwr",
    "factory-2.0.0",
    "extractor-text"
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    "ucc28250pwr.lbr",
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  "component": {
    "mpn": "UCC28250PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc28250.pdf",
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    "distributor_links": {
      "lcsc": "C2658662",
      "digikey": "296-UCC28250PWRTR-ND",
      "mouser": "595-UCC28250PWR"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T23:24:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UCC28250PWRTR-ND",
        "status": "found"
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        "pn": "595-UCC28250PWR",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "VSENSE",
        "type": "input",
        "description": "Output voltage sensing for prebias control, with an input voltage range of 0 to 3.3 V."
      },
      {
        "number": "2",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency set or synchronous clock input, with a recommended RT resistor range of 12.5 kΩ to 200 kΩ."
      },
      {
        "number": "3",
        "name": "RAMP/CS",
        "type": "input",
        "description": "PWM ramp input (for voltage mode control) or current sense input (for current mode control), with a recommended voltage range of 0 to 2.7 V."
      },
      {
        "number": "4",
        "name": "ILIM",
        "type": "input",
        "description": "Current sense for cycle-by-cycle overcurrent protection; the current sense comparator terminates the output pulse when this pin exceeds 0.5 V."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Device enable and disable, with an absolute maximum input voltage of 5.5 V."
      },
      {
        "number": "6",
        "name": "OVP/OTP",
        "type": "input",
        "description": "Overvoltage and overtemperature protection pin, with an absolute maximum input voltage of 3.6 V."
      },
      {
        "number": "7",
        "name": "VREF",
        "type": "power_in",
        "description": "3.3-V reference output, with a VREF bypass capacitor of 0.5 µF to 2 µF."
      },
      {
        "number": "8",
        "name": "REF/EA+",
        "type": "input",
        "description": "Error amplifier noninverting input, with a common-mode range of 0 to 3 V."
      },
      {
        "number": "9",
        "name": "FB/EA-",
        "type": "input",
        "description": "Error amplifier inverting input, with a common-mode range of 0 to 3 V."
      },
      {
        "number": "10",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output, with a high-level voltage of 2.8 V to 3 V and a low-level voltage of 0.3 V to 0.4 V."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all voltages are referenced to this pin unless otherwise noted."
      },
      {
        "number": "12",
        "name": "VDD",
        "type": "power_in",
        "description": "Bias supply input, with a recommended supply voltage of 4.7 V to 17 V and an absolute maximum of 20 V."
      },
      {
        "number": "13",
        "name": "SRB",
        "type": "output",
        "description": "0.2-A sink/source synchronous rectifier output."
      },
      {
        "number": "14",
        "name": "SRA",
        "type": "output",
        "description": "0.2-A sink/source synchronous rectifier output."
      },
      {
        "number": "15",
        "name": "OUTB",
        "type": "output",
        "description": "0.2-A sink/source primary switching output."
      },
      {
        "number": "16",
        "name": "OUTA",
        "type": "output",
        "description": "0.2-A sink/source primary switching output."
      },
      {
        "number": "17",
        "name": "HICC",
        "type": "input",
        "description": "Cycle-by-cycle current limit time delay and hiccup time setting, with an absolute maximum input voltage of 3.6 V."
      },
      {
        "number": "18",
        "name": "PS",
        "type": "input",
        "description": "Primary off to synchronous rectifier on dead-time set, with a resistor range of 5 kΩ to 250 kΩ."
      },
      {
        "number": "19",
        "name": "SP",
        "type": "input",
        "description": "Synchronous rectifier off to primary on dead-time set, with a resistor range of 5 kΩ to 250 kΩ."
      },
      {
        "number": "20",
        "name": "SS",
        "type": "bidirectional",
        "description": "Soft-start programming; the SS voltage is clamped at around 4 V after soft start, with an absolute maximum input voltage of 5.5 V."
      }
    ],
    "provenance": {
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 12,
        "cost_usd": 0.0241,
        "at": "2026-11-05T23:24:39"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc28250.pdf",
        "pages": 60,
        "sha256": "2b74bbce5dcc73f1",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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}