LT8618EDDB#TRPBF

{
  "schema_version": 1,
  "type": "component",
  "slug": "lt8618eddb-trpbf",
  "title": "LT8618EDDB#TRPBF",
  "brief": "Analog Devices DC-DC Converters, DFN-10(2x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lt8618eddb#trpbf",
    "factory-2.0.0",
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  "component": {
    "mpn": "LT8618EDDB#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "DFN-10(2x3)",
    "pin_count": 11,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt8618-8618-3_3.pdf",
    "parts": {
      "symbol": "lt8618eddb-trpbf.kicad_sym",
      "footprint": "lt8618eddb-trpbf.kicad_mod",
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      "model_3d_plain": "lt8618eddb-trpbf-etched.glb",
      "model_3d_step": "lt8618eddb-trpbf-etched.step",
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      "lbr": "lt8618eddb-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C3187547",
      "digikey": "505-LT8618EDDB#TRPBFTR-ND",
      "mouser": "584-LT8618EDDB#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T22:44:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LT8618EDDB#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT8618EDDB#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "power_out",
        "description": "Supplies a drive voltage higher than VIN to the topside power switch; place a 47nF boost capacitor as close as possible to the IC and do not put resistance in series with this pin."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "power_out",
        "description": "Output of the internal power switches that connects to the inductor, and this node should be kept small on the PCB for good performance."
      },
      {
        "number": "3",
        "name": "BIAS",
        "type": "input",
        "description": "The internal regulator draws current from BIAS instead of VIN when BIAS is above 3.2V; for outputs of 3.3V to 25V it should be tied to VOUT, a 1µF bypass is needed if another supply is used, and it should be tied to GND if no supply is available."
      },
      {
        "number": "4",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Internal 3.4V regulator bypass pin with a maximum output current of 2mA that must not be loaded externally, and it needs at least 1µF of low-ESR ceramic decoupling placed close to the IC."
      },
      {
        "number": "5",
        "name": "RT",
        "type": "passive",
        "description": "A resistor between RT and ground sets the switching frequency."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "For the LT8618 this is the feedback input where the feedback resistor divider tap connects, and the part regulates FB to 0.778V."
      },
      {
        "number": "7",
        "name": "TR/SS",
        "type": "bidirectional",
        "description": "Output tracking and soft-start pin where a voltage below 0.778V makes FB follow TR/SS, an internal 2µA pull-up sets the output ramp with a capacitor, and a 300Ω pull-down is active during shutdown and fault so a series resistor is needed if driven from a low-impedance output."
      },
      {
        "number": "8",
        "name": "PG",
        "type": "output",
        "description": "Open-drain power-good output that stays low until FB is within ±7.5% of the regulation voltage with no fault conditions, and it is valid when VIN is above 3.4V regardless of EN/UV state."
      },
      {
        "number": "9",
        "name": "EN/UV",
        "type": "input",
        "description": "The part is shut down when this pin is low and active when high, with a hysteretic threshold of 1.05V rising and 1.00V falling; tie it to VIN if shutdown is not used, and an external resistor divider from VIN can set a UVLO threshold."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "Supplies the internal circuitry and top-side power switch and must be locally bypassed with the input capacitor's positive terminal as close as possible to VIN, rated 3.4V to 60V operating (65V maximum for transients)."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad ground that must be connected to the negative terminal of the input capacitor and soldered to the PCB to lower the thermal resistance."
      }
    ],
    "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: The MPN LT8618EDDB#TRPBF is the LT8618 (adjustable, FB) version in the 10-lead DDB DFN. Pin 6 is FB ; The page 2 pin-configuration drawing text is scrambled in extraction, so the number-to-name mapping ; The schema has no separate spec field, so the headline ratings mentioned in pin descriptions (VIN 3."
        ],
        "pages_sent": 12,
        "cost_usd": 0.0857,
        "at": "2026-10-28T22:44:23"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt8618-8618-3_3.pdf",
        "pages": 29,
        "sha256": "4bd6ffbba1021846",
        "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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        "checked": "2026-10-28",
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    "package_dims": {
      "package_code": "DDB10",
      "source_page": 25,
      "D": {
        "nom_mm": 3,
        "range_mm": [
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          null
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      },
      "E1": {
        "nom_mm": 2,
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      "e": {
        "nom_mm": 0.5,
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      },
      "A": {
        "nom_mm": 0.75,
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      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "DFN-10(2x3)",
      "Category": "Power Management (PMIC)",
      "Pins": "11"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Operating Input Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.4,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.9,
          "typ": null,
          "max": 3.4,
          "conditions": "Note 5",
          "source_page": 3,
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        },
        {
          "name": "VIN Quiescent Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 4,
          "conditions": "VEN/UV = 0V",
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        {
          "name": "VIN Quiescent Current",
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          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.7,
          "max": 12,
          "conditions": "VEN/UV = 2V, Not Switching",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "LT8618 Feedback Reference Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.762,
          "typ": 0.778,
          "max": 0.798,
          "conditions": "VIN = 12V, ILOAD = 100µA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "FB/OUT Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": -0.06,
          "typ": 0.02,
          "max": 0.06,
          "conditions": "VIN = 4V to 60V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "LT8618 FB Pin Input Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VFB = 0.8V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum On-Time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": 35,
          "typ": null,
          "max": 65,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Off-Time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": 90,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 140,
          "typ": 200,
          "max": 260,
          "conditions": "RT = 221k",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1.85,
          "typ": 2,
          "max": 2.15,
          "conditions": "RT = 18.2k, LT8618/LT8618-3.3/LT8618C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Top Power NMOS Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 150,
          "typ": 200,
          "max": 250,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SW Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "VIN = 48V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN/UV Pin Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.98,
          "typ": 1.05,
          "max": 1.11,
          "conditions": "Pin Voltage Rising",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN/UV Pin Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VEN/UV = 2V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PG Upper Threshold Offset from VFB/OUT",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 5,
          "typ": 7.5,
          "max": 10,
          "conditions": "VFB/OUT Rising, LT8618/LT8618-3.3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PG Lower Threshold Offset from VFB/OUT",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -10,
          "typ": -7.5,
          "max": -5,
          "conditions": "VFB/OUT Falling, LT8618/LT8618-3.3/LT8618C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PG Leakage",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "VPG = 42V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PG Pull-Down Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 550,
          "max": 1200,
          "conditions": "VPG = 0.1V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "TR/SS Source Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 1,
          "typ": 2,
          "max": 3.5,
          "conditions": "VTR/SS = 0.1V, E- and I-Grades",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "TR/SS Pull-Down Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 300,
          "max": 900,
          "conditions": "Fault Condition, VTR/SS = 0.1V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN Pin Voltage",
          "symbol": "VIN, VEN/UV",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 65,
          "conditions": "Note 4: 65V transients, 60V continuous operation",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "PG Voltage",
          "symbol": "VPG",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 42,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BIAS Voltage",
          "symbol": "VBIAS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB and TR/SS Voltages",
          "symbol": "VFB, VTR/SS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "FB (LT8618/LT8618C), TR/SS",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "LT8618E/LT8618E-3.3",
          "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": "Thermal Resistance Junction-to-Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 76,
          "max": null,
          "conditions": "DDB 10-lead (3mm × 2mm) DFN",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 13.5,
          "max": null,
          "conditions": "DDB 10-lead (3mm × 2mm) DFN",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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