LT3971IMSE#PBF

{
  "slug": "lt3971imse-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, MSOP-10-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lt3971imse#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "README.md",
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    "lt3971imse-pbf.kicad_mod",
    "lt3971imse-pbf.glb",
    "lt3971imse-pbf.step",
    "lt3971imse-pbf.lbr",
    "docs/hero.png",
    "docs/lt3971imse-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt3971imse-pbf-hero.glb",
    "lt3971imse-pbf-hero.overlay.json",
    "lt3971imse-pbf-etched.glb"
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  "component": {
    "mpn": "LT3971IMSE#PBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-10-EP",
    "pin_count": 11,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3971fd.pdf",
    "parts": {
      "symbol": "lt3971imse-pbf.kicad_sym",
      "footprint": "lt3971imse-pbf.kicad_mod",
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      "model_3d_plain": "lt3971imse-pbf-etched.glb",
      "model_3d_step": "lt3971imse-pbf-etched.step",
      "model_3d_step_plain": "lt3971imse-pbf.step",
      "lbr": "lt3971imse-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C671779",
      "digikey": "LT3971IMSE#PBF-ND",
      "mouser": "584-LT3971IMSE#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T15:46:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3971IMSE#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT3971IMSE#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BD",
        "type": "passive",
        "description": "Connects to the anode of the boost diode and is normally connected to the output."
      },
      {
        "number": "2",
        "name": "BOOST",
        "type": "passive",
        "description": "Provides a drive voltage, higher than the input voltage, to the internal bipolar NPN power switch."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Output of the internal power switch; connect to the inductor, catch diode, and boost capacitor."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supplies current to the internal circuitry and internal power switch, must be locally bypassed, and the input range is 4.3V to 38V."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Part is in shutdown when low and active when high; the hysteretic threshold is 1.005V rising and 0.975V falling, and it is accurate only when VIN is above 4.3V."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "The LT3971 regulates FB to 1.19V; connect the feedback resistor divider tap here and a phase lead capacitor (typically 10pF) between FB and VOUT."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "passive",
        "description": "A capacitor tied to ground slowly ramps up the peak current limit at start-up; a 100k resistor in series is required for VIN above 25V."
      },
      {
        "number": "8",
        "name": "RT",
        "type": "passive",
        "description": "A resistor tied between RT and ground sets the switching frequency."
      },
      {
        "number": "9",
        "name": "PG",
        "type": "output",
        "description": "Open-drain output of an internal comparator that remains low until FB is within 9% of the final regulation voltage."
      },
      {
        "number": "10",
        "name": "SYNC",
        "type": "input",
        "description": "External clock synchronization input; ground this pin for low-ripple Burst Mode operation at low output loads."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground exposed pad that must be soldered to the PCB."
      }
    ],
    "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: MPN LT3971IMSE#PBF is the adjustable LT3971 in the 10-lead plastic MSOP (MSE10). Pinout taken from t"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0215,
        "at": "2026-10-28T15:46:21"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/3971fd.pdf",
        "pages": 28,
        "sha256": "cf769206b11377dd",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "18605eed706df7bb9674107abe7aa36e0ba163a09c21a2cee6c75cfa291b7937",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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  }
}