LT3481EMSE#TRPBF

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  "slug": "lt3481emse-trpbf",
  "title": "LT3481EMSE#TRPBF",
  "brief": "Analog Devices DC-DC Converters, MSOP-10-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "LT3481EMSE#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-10-EP",
    "pin_count": 11,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886283057287168",
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      "lbr": "lt3481emse-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C461521",
      "digikey": "LT3481EMSE#TRPBFTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T10:25:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3481EMSE#TRPBFTR-ND",
        "status": "found"
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      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "BD",
        "type": "passive",
        "description": "This pin connects to the anode of the internal boost Schottky diode, and the BD pin voltage is rated to a 30V maximum."
      },
      {
        "number": "2",
        "name": "BOOST",
        "type": "input",
        "description": "This pin provides a drive voltage higher than the input voltage to the internal NPN power switch, with a BOOST pin voltage maximum of 56V and a maximum of 30V above the SW pin."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "This pin is the output of the internal power switch and connects to the inductor, catch diode and boost capacitor."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "This pin supplies current to the internal regulator and power switch and must be locally bypassed, with a VIN maximum of 36V and a 3.6V to 34V operating range."
      },
      {
        "number": "5",
        "name": "RUN/SS",
        "type": "input",
        "description": "Tying this pin to ground shuts down the regulator, tying it to 2.3V or more enables normal operation, and it sets the soft-start ramp, with a RUN/SS voltage maximum of 36V."
      },
      {
        "number": "6",
        "name": "PG",
        "type": "output",
        "description": "This pin is the open-collector power good output that stays low until FB is within 10% of the final regulation voltage, with a PG voltage maximum of 30V."
      },
      {
        "number": "7",
        "name": "BIAS",
        "type": "power_in",
        "description": "This pin supplies current to the internal regulator and should be tied to the lowest available source above 3V (typically VOUT), with a BIAS voltage maximum of 30V."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "This pin is regulated to the 1.265V feedback reference and connects to the feedback resistor divider tap, with a FB voltage maximum of 5V."
      },
      {
        "number": "9",
        "name": "VC",
        "type": "passive",
        "description": "This pin is the output of the internal error amplifier that sets peak switch current, uses an RC network to ground for loop compensation, and has a 2V internal clamp voltage."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "input",
        "description": "This oscillator resistor input sets the switching frequency when a resistor is connected from this pin to ground, with an RT voltage maximum of 5V."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "This exposed pad is ground and must be soldered to the PCB and connected to GND."
      }
    ],
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    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-10-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "11"
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          "name": "Quiescent Current from VIN",
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          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.01,
          "max": 0.5,
          "conditions": "VRUN/SS = 0.2V",
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          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 22,
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          "conditions": "VBIAS = 3V, Not Switching; ●",
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        {
          "name": "Quiescent Current from VIN",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 75,
          "max": 120,
          "conditions": "VBIAS = 0, Not Switching",
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        {
          "name": "Quiescent Current from BIAS",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
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          "typ": 0.01,
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        {
          "name": "Quiescent Current from BIAS",
          "symbol": "",
          "kind": "electrical",
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          "max": 120,
          "conditions": "VBIAS = 3V, Not Switching; ●",
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        {
          "name": "FB Pin Bias Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 30,
          "max": 100,
          "conditions": "VFB = 1.25V, VC = 0.4V; ●",
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        {
          "name": "FB Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.002,
          "max": 0.02,
          "conditions": "4V < VIN < 34V",
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        {
          "name": "Minimum Switch Off-Time",
          "symbol": "",
          "kind": "electrical",
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          "max": 200,
          "conditions": "●",
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        {
          "name": "Boost Schottky Reverse Leakage",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.02,
          "max": 2,
          "conditions": "VSW = 10V, VBIAS = 0V",
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          "name": "Minimum Boost Voltage",
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          "kind": "electrical",
          "unit": "mA",
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          "max": 35,
          "conditions": "ISW = 1A",
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          "name": "RUN/SS Pin Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
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          "max": 10,
          "conditions": "VRUN/SS = 2.5V",
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          "name": "PG Leakage",
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          "max": 1,
          "conditions": "VPG = 5V",
          "source_page": 3,
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          "name": "PG Sink Current",
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          "kind": "electrical",
          "unit": "μA",
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          "max": 600,
          "conditions": "VPG = 3V; ●",
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          "name": "Operating Temperature Range (LT3481E)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
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          "conditions": "LT3481E grade (MSE package)",
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        {
          "name": "Input Voltage Operating Range",
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          "min": 3.6,
          "typ": null,
          "max": 34,
          "conditions": "Operating range as stated in Features; 36V maximum",
          "source_page": 1,
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        {
          "name": "BOOST Pin Above SW Pin",
          "symbol": "VBOOST-VSW",
          "kind": "absolute_maximum",
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          "typ": null,
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          "name": "FB, RT, VC Voltage",
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        {
          "name": "BIAS, PG, BD Voltage",
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          "name": "Maximum Junction Temperature (LT3481E)",
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          "unit": "°C",
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          "typ": null,
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          "conditions": "LT3481E, LT3481I",
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        {
          "name": "Storage Temperature Range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
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          "conditions": "10 sec soldering; MSE only",
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        {
          "name": "Thermal Resistance Junction-to-Ambient (MSE)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "MSE (10-lead MSOP) package",
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