LT3971EMSE#TRPBF

{
  "slug": "lt3971emse-trpbf",
  "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",
    "lt3971emse#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "lt3971emse-trpbf.kicad_sym",
    "lt3971emse-trpbf.kicad_mod",
    "lt3971emse-trpbf.glb",
    "lt3971emse-trpbf.step",
    "lt3971emse-trpbf.lbr",
    "docs/hero.png",
    "docs/lt3971emse-trpbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt3971emse-trpbf-hero.glb",
    "lt3971emse-trpbf-hero.overlay.json",
    "lt3971emse-trpbf-etched.glb"
  ],
  "component": {
    "mpn": "LT3971EMSE#TRPBF",
    "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": "lt3971emse-trpbf.kicad_sym",
      "footprint": "lt3971emse-trpbf.kicad_mod",
      "model_3d": "lt3971emse-trpbf-hero.glb",
      "model_3d_plain": "lt3971emse-trpbf-etched.glb",
      "model_3d_step": "lt3971emse-trpbf-etched.step",
      "model_3d_step_plain": "lt3971emse-trpbf.step",
      "lbr": "lt3971emse-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C671767",
      "digikey": "LT3971EMSE#TRPBFTR-ND",
      "mouser": "584-LT3971EMSE#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T15:46:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3971EMSE#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT3971EMSE#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BD",
        "type": "passive",
        "description": "Anode of the boost diode, normally connected to the output, with BD voltage rated to 30V and boost diode current rated to 1A."
      },
      {
        "number": "2",
        "name": "BOOST",
        "type": "power_in",
        "description": "Provides a drive voltage higher than VIN to the internal NPN power switch, with BOOST pin voltage rated to 55V and no more than 30V above the SW pin."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Output of the internal power switch, connected to the inductor, catch diode and boost capacitor."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supplies the internal circuitry and power switch over the 4.3V to 38V input range and must be locally bypassed."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Enable pin with a 1V threshold (1.005V rising, 0.975V falling) that shuts the part down when low; the threshold is accurate only when VIN is above 4.3V, and it is rated to 38V."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Regulates to 1.19V, with the feedback resistor divider tap connected here and a phase-lead capacitor (typically 10pF) connected between FB and VOUT."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start capacitor pin that slowly ramps the peak current limit at start-up; a 100k series resistor is required for VIN above 25V, and the pin is rated to 6V."
      },
      {
        "number": "8",
        "name": "RT",
        "type": "passive",
        "description": "A resistor tied to ground sets the switching frequency over the 200kHz to 2MHz range, and the pin is rated to 6V."
      },
      {
        "number": "9",
        "name": "PG",
        "type": "output",
        "description": "Open-drain power good output that stays low until FB is within 9% of the final regulation voltage, with PG voltage rated to 30V."
      },
      {
        "number": "10",
        "name": "SYNC",
        "type": "input",
        "description": "External clock synchronization input; grounding it selects low-ripple Burst Mode operation at low loads, and the pin is rated to 6V."
      },
      {
        "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 LT3971EMSE#TRPBF is the adjustable LT3971 in the 10-lead MSOP (MSE10) package. Pin 6 is FB here."
        ],
        "pages_sent": 10,
        "cost_usd": 0.0224,
        "at": "2026-10-28T15:46:18"
      },
      "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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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
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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)"
      },
      {
        "file": "lt3971emse-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}