LT3757EMSE#PBF

{
  "slug": "lt3757emse-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices AC-DC Controllers & Regulators, MSOP-10-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lt3757emse#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt3757emse-pbf.kicad_sym",
    "lt3757emse-pbf.kicad_mod",
    "lt3757emse-pbf.glb",
    "lt3757emse-pbf.step",
    "lt3757emse-pbf.lbr",
    "docs/hero.png",
    "docs/lt3757emse-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt3757emse-pbf-hero.glb",
    "lt3757emse-pbf-hero.overlay.json",
    "lt3757emse-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LT3757EMSE#PBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-10-EP",
    "pin_count": 11,
    "category": "Power Management ICs",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3757-3757a.pdf",
    "parts": {
      "symbol": "lt3757emse-pbf.kicad_sym",
      "footprint": "lt3757emse-pbf.kicad_mod",
      "model_3d": "lt3757emse-pbf-hero.glb",
      "model_3d_plain": "lt3757emse-pbf-etched.glb",
      "model_3d_step": "lt3757emse-pbf-etched.step",
      "model_3d_step_plain": "lt3757emse-pbf.step",
      "lbr": "lt3757emse-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C117410",
      "digikey": "LT3757EMSE#PBF-ND",
      "mouser": "584-LT3757EMSE#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T00:18:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3757EMSE#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT3757EMSE#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VC",
        "type": "passive",
        "description": "Error amplifier compensation pin used to stabilize the voltage loop with an external RC network, with a 5.5 V/V current mode gain and a 5 MΩ output impedance stated in the electrical characteristics; absolute maximum rating is 3 V."
      },
      {
        "number": "2",
        "name": "FBX",
        "type": "input",
        "description": "Positive and negative feedback pin that receives the divider voltage from the output, regulated to 1.6 V (positive) or -0.8 V (negative), with an absolute maximum range of -6 V to 6 V."
      },
      {
        "number": "3",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin that sets the soft-start interval with an external capacitor and has a 10 µA (typical) pull-up to an internal 2.5 V rail; it is reset to GND by UVLO, INTVCC UV/OV or thermal lockout."
      },
      {
        "number": "4",
        "name": "RT",
        "type": "passive",
        "description": "Switching frequency adjustment pin where a resistor to GND sets the frequency from 50 kHz to 1 MHz, with RT voltage of 1.2 V and an absolute maximum of 1.5 V, and it must not be left open."
      },
      {
        "number": "5",
        "name": "SYNC",
        "type": "input",
        "description": "Frequency synchronization pin for an external clock, where the RT resistor must be chosen for a switching frequency 20% slower than the SYNC pulse frequency, input low is 0.4 V max, input high is 1.5 V min, and it must be tied to GND if unused."
      },
      {
        "number": "6",
        "name": "SENSE",
        "type": "input",
        "description": "Current sense input for the control loop that must be Kelvin connected to the positive terminal of the switch current sense resistor, with an absolute maximum range of ±0.3 V and a 110 mV (typical) current limit threshold."
      },
      {
        "number": "7",
        "name": "GATE",
        "type": "output",
        "description": "N-channel MOSFET gate driver output that switches between INTVCC and GND and is driven to GND during shutdown, thermal lockout, or INTVCC over/undervoltage faults."
      },
      {
        "number": "8",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Regulated supply for internal loads and the gate driver, regulated to 7.2 V (typical) and requiring a minimum 4.7 µF bypass capacitor placed close to the pin, with an absolute maximum of VIN + 0.3 V or 20 V."
      },
      {
        "number": "9",
        "name": "SHDN/UVLO",
        "type": "input",
        "description": "Shutdown and undervoltage detect pin with an accurate 1.22 V (nominal) falling threshold, where tying it to 0.4 V or less disables the device and reduces VIN quiescent current below 1 µA, and its absolute maximum is 40 V."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin operating from 2.9 V to 40 V, which must be locally bypassed with a 0.22 µF or larger capacitor placed close to the pin."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground exposed pad that also serves as the negative terminal of the current sense resistor and must be soldered directly to the local ground plane."
      }
    ],
    "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 and names were taken from the MSE (10-lead MSOP) pin configuration on page 2, whose draw; The datasheet does not give an explicit pin type for VC, SS, RT, SYNC, SENSE or SHDN/UVLO. Types wer"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0603,
        "at": "2026-10-29T00:17:46"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3757-3757a.pdf",
        "pages": 38,
        "sha256": "a50e40555a5ca7a0",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt3757emse-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "18605eed706df7bb9674107abe7aa36e0ba163a09c21a2cee6c75cfa291b7937",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt3757emse-pbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "70fd157e94f0bb67ecaed1e2baa98d4418327e59a3ea66f26768203207d894f5",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "MSE",
      "source_page": 36,
      "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": "lt3757emse-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}