UCC2801PW

{
  "schema_version": 1,
  "type": "component",
  "slug": "ucc2801pw",
  "title": "UCC2801PW",
  "brief": "Texas Instruments DC-DC Controllers, TSSOP-8. 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",
    "ucc2801pw",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UCC2801PW",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-8",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc2801.pdf",
    "parts": {
      "symbol": "ucc2801pw.kicad_sym",
      "footprint": "ucc2801pw.kicad_mod",
      "model_3d": "ucc2801pw-hero.glb",
      "model_3d_plain": "ucc2801pw.glb",
      "model_3d_step": "ucc2801pw-etched.step",
      "model_3d_step_plain": "ucc2801pw.step",
      "lbr": "ucc2801pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C1530282",
      "digikey": "296-32783-ND",
      "mouser": "595-UCC2801PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T22:05:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-32783-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCC2801PW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "COMP is the output of the error amplifier and the input of the PWM comparator; the error amplifier is a low output impedance 2-MHz amplifier that can both source and sink current, is internally current-limited, and zero duty cycle can be commanded by forcing COMP to GND."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "FB is the inverting input of the error amplifier, and for best stability its lead length and stray capacitance should be kept as short and small as possible."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "CS is the input to the PWM and overcurrent comparators, with 100 ns of digital leading-edge blanking after the rising edge of OUT, and exceeding the overcurrent threshold causes a soft-start cycle."
      },
      {
        "number": "4",
        "name": "RC",
        "type": "input",
        "description": "RC is the oscillator timing pin, with a timing resistor from REF to RC (recommended 10 kΩ to 200 kΩ, never less than 10 kΩ) and a timing capacitor from RC to GND (recommended 100 pF to 1000 pF)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "GND is the reference ground and power ground for all functions on the part."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "OUT is the high-current totem-pole gate driver output, capable of peak currents exceeding ±750 mA (absolute maximum ±1 A), and is actively held low when VCC is below the UVLO threshold."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "VCC is the power input, which must be bypassed with a minimum of 1 µF in parallel with a 0.1 µF ceramic capacitor placed close to the device, and the absolute maximum VCC is 12 V when driven from a low-impedance source with ICC not exceeding 30 mA."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "power_out",
        "description": "REF is the voltage reference output (5 V nominal on UCC2801) for the error amplifier and other functions, requires a minimum of 0.1 µF ceramic bypass to GND, and needs additional bypassing for external loads above 2.5 mA."
      }
    ],
    "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 Figure 5-2 (PW Package 8-Pin TSSOP Top View, page 3). The Table 5-1 pin f; The Table 5-1 type for COMP and REF is printed as 'O'; they are mapped here to output and power_out ; Per the package option addendum (page 42), UCC2801PW is listed as NRND (not recommended for new desi"
        ],
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        "cost_usd": 0.134,
        "at": "2026-10-08T22:04:35"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc2801.pdf",
        "pages": 60,
        "sha256": "4ea6450f4489b173",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cf28a51742b2e31065e201d1b313207140cbfb49062efd938788f7a310d02738",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-8",
      "Category": "Power Supply Chip",
      "Pins": "8"
    },
    "characteristics": {
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          "name": "OUT current",
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        {
          "name": "Lead temperature, soldering (10 s)",
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          "unit": "°C",
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        {
          "name": "Storage temperature",
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        {
          "name": "Junction temperature",
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          "name": "VCC bias supply voltage from low impedance source",
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          "max": 11,
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          "kind": "recommended_operating",
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          "max": 6,
          "conditions": "max printed as '6 or VVCC' (lesser value)",
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          "kind": "recommended_operating",
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          "typ": null,
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          "conditions": "max printed symbolically as VVCC",
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        {
          "name": "Supply bias current",
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          "kind": "recommended_operating",
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        {
          "name": "Average OUT pin current",
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          "name": "REF pin output current",
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        {
          "name": "Oscillator frequency",
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        {
          "name": "Operating free-air temperature",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
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          "name": "Output voltage (REFERENCE)",
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          "min": 4.925,
          "typ": 5,
          "max": 5.075,
          "conditions": "TJ = 25°C, I = 0.2 mA",
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        {
          "name": "Load regulation",
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          "max": 30,
          "conditions": "0.2 mA < I < 5 mA",
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          "name": "Line regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV/V",
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          "max": 1.9,
          "conditions": "TJ = 25°C, VCC = 10 V to clamp (IVCC = 25 mA)",
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          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
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          "max": 2.5,
          "conditions": "TJ = –40°C to 125°C, VCC = 10 V to clamp (IVCC = 25 mA)",
          "source_page": 7,
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        {
          "name": "Total variation (reference)",
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          "conditions": "TA = 125°C, 1000 hours",
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          "name": "Oscillator frequency",
          "symbol": "",
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          "unit": "kHz",
          "min": 40,
          "typ": 46,
          "max": 52,
          "conditions": "UCC2801 column; footnote 2: twice the output frequency for UCC2801",
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        {
          "name": "Temperature stability (oscillator)",
          "symbol": "",
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          "unit": "%",
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        {
          "name": "Amplitude peak-to-peak (oscillator)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.25,
          "typ": 2.4,
          "max": 2.55,
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          "source_page": 7,
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        {
          "name": "Error amplifier input voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.44,
          "typ": 2.5,
          "max": 2.56,
          "conditions": "COMP = 2.5 V",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "Error amplifier input bias current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
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        {
          "name": "Open loop voltage gain",
          "symbol": "",
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          "min": 60,
          "typ": 80,
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        {
          "name": "COMP sink current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
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          "conditions": "FB = 2.7 V, COMP = 1.1 V",
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        {
          "name": "COMP source current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.2,
          "typ": -0.5,
          "max": -0.8,
          "conditions": "FB = 1.8 V, COMP = REF – 1.2 V",
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        {
          "name": "Maximum duty cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 48,
          "typ": 49,
          "max": 50,
          "conditions": "UCC2801 column",
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          "name": "Current sense gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/V",
          "min": 1.1,
          "typ": 1.65,
          "max": 1.8,
          "conditions": "0 ≤ VCS ≤ 0.8 V",
          "source_page": 8,
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          "name": "Maximum input signal",
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          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "COMP = 5 V; measured at latch trip point with pin 2 (FB) at 0 V",
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        {
          "name": "Current sense input bias current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": -200,
          "typ": null,
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          "conditions": "",
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          "name": "CS blank time",
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          "name": "Overcurrent threshold",
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          "unit": "V",
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          "name": "COMP to CS offset",
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          "conditions": "I = 20 mA",
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          "name": "OUT low level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 0.9,
          "conditions": "I = 200 mA",
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        {
          "name": "OUT low level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.7,
          "max": 1.2,
          "conditions": "I = 20 mA, VCC = 0 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "OUT high VSAT (VCC-OUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.15,
          "max": 0.4,
          "conditions": "I = 20 mA",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "OUT high VSAT (VCC-OUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": 1.9,
          "conditions": "I = 200 mA",
          "source_page": 8,
          "source": "datasheet"
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          "name": "Rise time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 41,
          "max": 70,
          "conditions": "CL = 1 nF",
          "source_page": 8,
          "source": "datasheet"
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          "name": "Fall time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 44,
          "max": 75,
          "conditions": "CL = 1 nF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Start threshold (UVLO)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 8.6,
          "typ": 9.4,
          "max": 10.2,
          "conditions": "UCC2801 column",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "Stop threshold (UVLO)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 6.8,
          "typ": 7.4,
          "max": 8,
          "conditions": "UCC2801 column",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "Start to stop hysteresis (UVLO)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": 2,
          "max": 2.4,
          "conditions": "UCC2801 column",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "COMP rise time (soft start)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 4,
          "max": 10,
          "conditions": "FB = 1.8 V, rise from 0.5 V to REF – 1 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Start-up current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "VCC < start threshold",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 1,
          "conditions": "FB = 0 V, CS = 0 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC internal Zener voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 12,
          "typ": 13.5,
          "max": 15,
          "conditions": "ICC = 10 mA",
          "source_page": 8,
          "source": "datasheet"
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