LT3975EMSE#PBF

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  "slug": "lt3975emse-pbf",
  "title": "LT3975EMSE#PBF",
  "brief": "Analog Devices DC-DC Converters, MSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "power management ics",
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  "component": {
    "mpn": "LT3975EMSE#PBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-16-EP",
    "pin_count": 17,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3975f.pdf",
    "parts": {
      "symbol": "lt3975emse-pbf.kicad_sym",
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      "lbr": "lt3975emse-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C671831",
      "digikey": "LT3975EMSE#PBF-ND",
      "mouser": "584-LT3975EMSE#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T22:43:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3975EMSE#PBF-ND",
        "status": "found"
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      "mouser": {
        "pn": "584-LT3975EMSE#PBF",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "FB regulates to 1.197V; connect the feedback divider tap here and a phase lead capacitor (typically 10pF) between FB and the output."
      },
      {
        "number": "2",
        "name": "SS",
        "type": "passive",
        "description": "A soft-start capacitor from SS to ground slowly ramps the peak current limit at start-up, with an internal 1.8µA pull-up; float the pin to disable soft-start."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "input",
        "description": "OUT is the input to the dropout comparator that maintains a minimum 500mV between VIN and OUT; connect it to the output when the programmed output voltage is below 16V."
      },
      {
        "number": "4",
        "name": "BOOST",
        "type": "power_in",
        "description": "BOOST provides a drive voltage higher than the input voltage to the internal bipolar NPN power switch."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "SW is the output of the internal power switch and connects to the inductor, catch diode, and boost capacitor."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "SW is the output of the internal power switch and connects to the inductor, catch diode, and boost capacitor."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "SW is the output of the internal power switch and connects to the inductor, catch diode, and boost capacitor."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect; this pin is not connected to internal circuitry."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect; this pin is not connected to internal circuitry."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "VIN supplies the internal circuitry and power switch and must be locally bypassed."
      },
      {
        "number": "11",
        "name": "VIN",
        "type": "power_in",
        "description": "VIN supplies the internal circuitry and power switch and must be locally bypassed."
      },
      {
        "number": "12",
        "name": "VIN",
        "type": "power_in",
        "description": "VIN supplies the internal circuitry and power switch and must be locally bypassed."
      },
      {
        "number": "13",
        "name": "EN",
        "type": "input",
        "description": "EN high enables the part and low shuts it down; threshold is 1.08V rising and 1.02V falling, accurate only when VIN is above 4.3V, and internal UVLO shuts down the part below 3.9V."
      },
      {
        "number": "14",
        "name": "RT",
        "type": "passive",
        "description": "A resistor from RT to ground sets the switching frequency."
      },
      {
        "number": "15",
        "name": "PG",
        "type": "output",
        "description": "PG is an open-drain power good output that stays low until FB is within 8.4% of the final regulation voltage and is valid when VIN is above 2V."
      },
      {
        "number": "16",
        "name": "SYNC",
        "type": "input",
        "description": "SYNC is the external clock synchronization input; ground it for Burst Mode operation at low loads, and do not float it."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad ground that must be soldered to the PCB."
      }
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        "pages": 24,
        "sha256": "d1c511aec8b7e702",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 17,
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  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-16-EP",
      "Category": "Power Management ICs",
      "Pins": "17"
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        {
          "name": "FB Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.0003,
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        {
          "name": "Switching Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1.8,
          "typ": 2.25,
          "max": 2.7,
          "conditions": "RT = 11.8k",
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        {
          "name": "Minimum Switch On-Time",
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          "kind": "timing",
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          "name": "Minimum Switch Off-Time",
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        {
          "name": "Switch Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 4,
          "typ": 5.4,
          "max": 6.8,
          "conditions": "VFB = 1V",
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        {
          "name": "Foldback Switch Current Limit",
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        {
          "name": "Switch VCESAT",
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          "name": "Switch Leakage Current",
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          "name": "Boost Schottky Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
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          "name": "Boost Schottky Reverse Leakage",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.02,
          "max": 2,
          "conditions": "VREVERSE = 12V",
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          "name": "Minimum Boost Voltage",
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          "name": "BOOST Pin Current",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 20,
          "max": 32,
          "conditions": "ISW = 1A, VBOOST – VSW = 3V",
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          "name": "EN Voltage Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.92,
          "typ": 1.02,
          "max": 1.12,
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          "name": "EN Pin Current",
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        {
          "name": "PG Threshold Offset from VFB",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 5,
          "typ": 8.4,
          "max": 13,
          "conditions": "VFB Falling",
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          "name": "PG Hysteresis as % of Output Voltage",
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          "name": "PG Leakage",
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          "conditions": "VPG = 3V",
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          "name": "PG Sink Current",
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          "name": "SYNC Low Threshold",
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          "name": "SYNC High Threshold",
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          "name": "SS Source Current",
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          "conditions": "VSS = 0.5V",
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          "name": "BOOST Pin Above SW Pin",
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          "name": "Storage Temperature Range",
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          "name": "Thermal Resistance, Junction to Ambient",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 40,
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