LTC3601EUD#PBF

{
  "slug": "ltc3601eud-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "ltc3601eud#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ltc3601eud-pbf.kicad_sym",
    "ltc3601eud-pbf.kicad_mod",
    "ltc3601eud-pbf.glb",
    "ltc3601eud-pbf.step",
    "ltc3601eud-pbf.lbr",
    "docs/hero.png",
    "docs/ltc3601eud-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ltc3601eud-pbf-hero.glb",
    "ltc3601eud-pbf-hero.overlay.json",
    "ltc3601eud-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LTC3601EUD#PBF",
    "manufacturer": "Analog Devices",
    "package": "QFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3601fc.pdf",
    "parts": {
      "symbol": "ltc3601eud-pbf.kicad_sym",
      "footprint": "ltc3601eud-pbf.kicad_mod",
      "model_3d": "ltc3601eud-pbf-hero.glb",
      "model_3d_plain": "ltc3601eud-pbf-etched.glb",
      "model_3d_step": "ltc3601eud-pbf-etched.step",
      "model_3d_step_plain": "ltc3601eud-pbf.step",
      "lbr": "ltc3601eud-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C107866",
      "digikey": "505-LTC3601EUD#PBF-ND",
      "mouser": "584-LTC3601EUD#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T02:57:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC3601EUD#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LTC3601EUD#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MODE/SYNC",
        "type": "input",
        "description": "Mode selection and external synchronization input: tie to ground for forced continuous operation, float or tie to INTVCC for Burst Mode operation, and drive with an external clock to synchronize (the part then defaults to forced continuous operation)."
      },
      {
        "number": "2",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good output that is pulled to ground when FB is not within 8% (typical) of the 0.6V reference and becomes high impedance once FB returns to within ±5% (typical)."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Switch node output connected to the SW side of the external inductor, with a normal operating voltage swing from ground to PVIN."
      },
      {
        "number": "4",
        "name": "SW",
        "type": "output",
        "description": "Switch node output connected to the SW side of the external inductor, with a normal operating voltage swing from ground to PVIN."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "Labeled NC in the pin configuration drawing; the datasheet gives no function for this pin."
      },
      {
        "number": "6",
        "name": "BOOST",
        "type": "power_out",
        "description": "Boosted floating driver supply: the bootstrap capacitor (+) connects here and (-) to SW, with a normal swing from a diode drop below INTVCC up to PVIN + INTVCC."
      },
      {
        "number": "7",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Internal 3.3V regulator output that should be decoupled to PGND with a low-ESR ceramic capacitor of 1µF or more."
      },
      {
        "number": "8",
        "name": "VON",
        "type": "input",
        "description": "On-time voltage input that sets the on-time comparator trip point; connect to the regulated output for VOUT ≤ 6V, with a normal pin impedance of 180kΩ."
      },
      {
        "number": "9",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground that should have a low-noise connection to reference ground; the feedback network, external compensation network and RT resistor connect to this pin."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "passive",
        "description": "Oscillator frequency program pin: connect a resistor between 80k and 400k from this pin to SGND to set 800kHz to 4MHz, or tie to INTVCC to default to 2MHz."
      },
      {
        "number": "11",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input to the error amplifier, which compares it to the internal 0.6V reference through an external resistor divider."
      },
      {
        "number": "12",
        "name": "ITH",
        "type": "passive",
        "description": "Error amplifier output and switching regulator compensation pin; connect to INTVCC to use the default internal compensation."
      },
      {
        "number": "13",
        "name": "TRACK",
        "type": "input",
        "description": "Output voltage tracking and soft-start input: forcing below 0.6V overrides the internal reference, and an internal 1.4µA pull-up allows a soft-start capacitor to ground."
      },
      {
        "number": "14",
        "name": "RUN",
        "type": "input",
        "description": "Regulator enable pin: a voltage above 1.25V enables the chip and below 1V places it in shutdown, and the pin must not be left floating."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Main power supply input for the 4V to 15V operating range, to be closely decoupled to PGND with a low-ESR capacitor of 10µF or more."
      },
      {
        "number": "16",
        "name": "VIN",
        "type": "power_in",
        "description": "Main power supply input for the 4V to 15V operating range, to be closely decoupled to PGND with a low-ESR capacitor of 10µF or more."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground exposed pad that must be soldered to the PCB to provide low-impedance electrical contact to ground and good thermal contact."
      }
    ],
    "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: The QFN pin-number mapping comes from the 'PIN FUNCTIONS (QFN/MSE)' section (page 7), which lists 'P; Pin 5 is not named in the pin-function text. It was assigned to NC because it is the only QFN number; Pin 17 is the exposed pad, which the datasheet states is PGND for the QFN package. It is listed as a"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0685,
        "at": "2026-10-31T02:57:12"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/3601fc.pdf",
        "pages": 26,
        "sha256": "d75d60bef13e484c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ltc3601eud-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc3601eud-pbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0fcbb12ac75ccdb112c6009d6a26921dbd77c688f7dd93552cdcfde00b85d0ea",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "UD16",
      "source_page": 23,
      "D": {
        "nom_mm": 3.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 3.0,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.7,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "ltc3601eud-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}