main
Ray Set visibility: public c122068 11d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ltc3621ims8e-trpbf",
  "title": "LTC3621IMS8E#TRPBF",
  "brief": "Analog Devices DC-DC Converters, MSOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management ics",
    "ltc3621ims8e#trpbf",
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  "component": {
    "mpn": "LTC3621IMS8E#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-8-EP",
    "pin_count": 9,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/ltc3621-3621-2.pdf",
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      "lcsc": "C685345",
      "digikey": "LTC3621IMS8E#TRPBFTR-ND",
      "mouser": "584-C3621IMS8ETRPBF"
    },
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        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switch node connection to the inductor of the step-down regulator."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage of the step-down regulator."
      },
      {
        "number": "3",
        "name": "RUN",
        "type": "input",
        "description": "Logic-controlled RUN input that must not be left floating, with logic high activating the step-down regulator."
      },
      {
        "number": "4",
        "name": "PGOOD",
        "type": "output",
        "description": "VOUT within regulation indicator output."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the error amplifier, where a resistor divider tap connects for adjustable output or which connects directly to VOUT for fixed VOUT options."
      },
      {
        "number": "6",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Low dropout regulator output that must be bypassed with at least 1µF to ground."
      },
      {
        "number": "7",
        "name": "MODE/SYNC",
        "type": "input",
        "description": "Selects Burst Mode operation with a 400mA peak current clamp when tied to INTVCC, pulse-skipping when tied to GND, or forced continuous mode at a voltage between 1V and VINTVCC - 1.2V, and syncs to an external clock when driven by one."
      },
      {
        "number": "8",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground pin, present on the MSOP package only."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground backplane for power and signal ground that must be soldered to PCB ground as the exposed pad."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
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        "pages_sent": 10,
        "cost_usd": 0.0205,
        "at": "2026-10-28T15:38:21"
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      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/ltc3621-3621-2.pdf",
        "pages": 20,
        "sha256": "82b884bf58700a7a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "43252be3beac8fd30ca9bfeb82a613fa01d5dffff9b22810c13a4655daafb5ee",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-8-EP",
      "Category": "Power Management ICs",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
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      "rows": [
        {
          "name": "Operating Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Regulated Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.594,
          "typ": 0.6,
          "max": 0.606,
          "conditions": "LTC3621/LTC3621-2, junction temperature range (l), E/I-grade",
          "source_page": 4,
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        },
        {
          "name": "Reference Voltage Line Regulation",
          "symbol": "ΔVLINE(REG)",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.015,
          "conditions": "VIN = 2.7V to 17V (Note 5)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RUN Input High Threshold",
          "symbol": "VRUN",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RUN Input Low Threshold",
          "symbol": "VRUN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Peak Current Limit (E/I-Grade)",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 1.44,
          "typ": 1.6,
          "max": 1.76,
          "conditions": "E/I-Grade, junction temperature range (l)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VINTVCC Undervoltage Lockout",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 2.6,
          "max": 2.7,
          "conditions": "VIN Ramping Up",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN Overvoltage Lockout Rising",
          "symbol": "VOVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 18,
          "typ": 19,
          "max": 20,
          "conditions": "junction temperature range (l)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency (E/I-Grade)",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.92,
          "typ": 1,
          "max": 1.08,
          "conditions": "LTC3621/LTC3621-3.3/LTC3621-5 (E/I-Grade), junction temperature range (l)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SYNC Capture Range",
          "symbol": "fSYNC",
          "kind": "electrical",
          "unit": "%",
          "min": 60,
          "typ": null,
          "max": 140,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Good Range",
          "symbol": "ΔVPGOOD",
          "kind": "electrical",
          "unit": "%",
          "min": -12.5,
          "typ": null,
          "max": 12.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Good Resistance",
          "symbol": "RPGOOD",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 275,
          "max": 350,
          "conditions": "PGOOD RDS(ON) at 500µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Absolute Maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RUN Voltage Absolute Maximum",
          "symbol": "RUN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "VIN to –0.3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "MODE/SYNC, FB Voltages Absolute Maximum",
          "symbol": "MODE/SYNC, FB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "PGOOD Voltages Absolute Maximum",
          "symbol": "PGOOD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range (E/I)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "LTC3621E, LTC3621I",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJMAX",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "MS8E package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-Ambient Thermal Resistance",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "MS8E package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-Case Thermal Resistance",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "MS8E package",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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