LTC3440EMS#PBF

{
  "slug": "ltc3440ems-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, MSOP-10. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "ltc3440ems#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ltc3440ems-pbf.kicad_sym",
    "ltc3440ems-pbf.kicad_mod",
    "ltc3440ems-pbf.glb",
    "ltc3440ems-pbf.step",
    "ltc3440ems-pbf.lbr",
    "docs/hero.png",
    "docs/ltc3440ems-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ltc3440ems-pbf-hero.glb",
    "ltc3440ems-pbf-hero.overlay.json",
    "ltc3440ems-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LTC3440EMS#PBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-10",
    "pin_count": 10,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3440fd.pdf",
    "parts": {
      "symbol": "ltc3440ems-pbf.kicad_sym",
      "footprint": "ltc3440ems-pbf.kicad_mod",
      "model_3d": "ltc3440ems-pbf-hero.glb",
      "model_3d_plain": "ltc3440ems-pbf-etched.glb",
      "model_3d_step": "ltc3440ems-pbf-etched.step",
      "model_3d_step_plain": "ltc3440ems-pbf.step",
      "lbr": "ltc3440ems-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C684779",
      "digikey": "505-LTC3440EMS#PBF-ND",
      "mouser": "584-LTC3440EMS#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T04:01:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC3440EMS#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LTC3440EMS#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RT",
        "type": "input",
        "description": "Timing resistor pin that programs the oscillator frequency over a range of 300kHz to 2MHz."
      },
      {
        "number": "2",
        "name": "MODE/SYNC",
        "type": "input",
        "description": "Driving it high enables Burst Mode operation, while a low level or an external clock selects fixed-frequency switching, with the clock at twice the desired switching frequency and a pulse width between 100ns and 2µs."
      },
      {
        "number": "3",
        "name": "SW1",
        "type": "passive",
        "description": "Switch pin where internal switches A and B connect; the inductor connects from SW1 to SW2 and the trace should be kept short to reduce EMI."
      },
      {
        "number": "4",
        "name": "SW2",
        "type": "passive",
        "description": "Switch pin where internal switches C and D connect; a Schottky diode from SW2 to VOUT is required for output voltages above 4.3V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Signal and power ground for the IC, to which the VIN bypass capacitor must be returned close to the pin."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output of the synchronous rectifier, with a filter capacitor from VOUT to GND; the output is adjustable from 2.5V to 5.5V."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin and internal VCC for the IC, with an input operating range of 2.5V to 5.5V and a ceramic bypass capacitor required close to VIN and GND."
      },
      {
        "number": "8",
        "name": "SHDN/SS",
        "type": "input",
        "description": "Combined soft-start and shutdown pin: grounding it shuts down the IC, above 1.5V enables the IC, and above 2.5V keeps the error amp from being clamped during soft-start."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin connected to the resistor divider tap, with a feedback reference typically 1.22V (1.196V to 1.244V)."
      },
      {
        "number": "10",
        "name": "VC",
        "type": "passive",
        "description": "Error amplifier output, with a frequency compensation network connected from this pin to FB."
      }
    ],
    "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 numbering and names are taken from the MS (10-lead MSOP) pin configuration on page 2, which matc; KiCad types for SW1, SW2 and VC are judgement calls because the datasheet does not classify them; th"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0396,
        "at": "2026-10-29T04:01:37"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/3440fd.pdf",
        "pages": 22,
        "sha256": "284b323962287c76",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 10,
        "described": 10,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ltc3440ems-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b8f88eac3ce221c2ccb0b5048f9ad49c2ef4af148f8ae50c4e232e357683f547",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc3440ems-pbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d4e4e626273a66f9b182d7a1b12070fdd2ac035af61457229c45483871114357",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "MS",
      "source_page": 20,
      "D": {
        "nom_mm": 3.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 3.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E": {
        "nom_mm": 4.9,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.1,
        "range_mm": [
          null,
          1.1
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "ltc3440ems-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}