LT3430EFE#TRPBF

{
  "schema_version": 1,
  "type": "component",
  "slug": "lt3430efe-trpbf",
  "title": "LT3430EFE#TRPBF",
  "brief": "Analog Devices DC-DC Converters, TSSOP-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",
  "tags": [
    "component",
    "power management (pmic)",
    "lt3430efe#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LT3430EFE#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "TSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908435115560960",
    "parts": {
      "symbol": "lt3430efe-trpbf.kicad_sym",
      "footprint": "lt3430efe-trpbf.kicad_mod",
      "model_3d": "lt3430efe-trpbf-hero.glb",
      "model_3d_plain": "lt3430efe-trpbf-etched.glb",
      "model_3d_step": "lt3430efe-trpbf-etched.step",
      "model_3d_step_plain": "lt3430efe-trpbf.step",
      "lbr": "lt3430efe-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C670535",
      "digikey": "LT3430EFE#TRPBFTR-ND",
      "mouser": "584-LT3430EFE#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T11:02:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3430EFE#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT3430EFE#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground for the regulated output; keep the paths to load ground short, since load regulation suffers if the load ground is not at the GND pin voltage."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "output",
        "description": "Emitter of the on-chip NPN power switch, driven up to the input pin voltage during switch on-time, with negative switch voltage clamped by the external catch diode to a maximum of -0.8V."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Collector of the on-chip NPN power switch that also powers the internal control circuitry when no voltage is present on the BIAS pin; keep the path from VIN through the input capacitor and catch diode short."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Collector of the on-chip NPN power switch that also powers the internal control circuitry when no voltage is present on the BIAS pin; pins 3 and 4 are shorted together on the PCB."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Emitter of the on-chip NPN power switch, driven up to the input pin voltage during switch on-time, with negative switch voltage clamped by the external catch diode to a maximum of -0.8V."
      },
      {
        "number": "6",
        "name": "BOOST",
        "type": "power_in",
        "description": "Supplies a drive voltage higher than VIN to the internal NPN switch so it saturates; the boost capacitor and diode generate this voltage externally (absolute maximum BOOST pin voltage 68V, BOOST above SW 35V)."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground for the regulated output; solder to a continuous copper ground plane under the die for thermal and electrical performance."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground for the regulated output; solder to a continuous copper ground plane under the die for thermal and electrical performance."
      },
      {
        "number": "10",
        "name": "BIAS",
        "type": "power_in",
        "description": "Connect to the regulated output (minimum output setting of 3V for this mode) so internal circuitry draws operating current from the output instead of VIN to improve efficiency."
      },
      {
        "number": "11",
        "name": "VC",
        "type": "passive",
        "description": "Error amplifier output and peak switch current comparator input used for compensation; it sits near 0.9V at light load and 2.1V at maximum load, can be driven to ground to shut off the regulator, and must be current-limited to 4mA if driven high."
      },
      {
        "number": "12",
        "name": "FB",
        "type": "input",
        "description": "Feedback input that regulates to 1.22V through an external divider; below 0.6V it reduces switch current limit and disables SYNC, and below 0.8V it reduces switching frequency."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "14",
        "name": "SYNC",
        "type": "input",
        "description": "Logic-compatible input that synchronizes the internal oscillator, accepting 10% to 90% duty cycle signals in the range 228kHz to 700kHz for the LT3430 or 125kHz to 250kHz for the LT3430-1."
      },
      {
        "number": "15",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown input with a 2.38V threshold that disables switching (acting as accurate UVLO) and a 0.4V threshold that forces micropower shutdown; it may be left open or forced high to no more than 6V."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground for the regulated output; solder to the continuous copper ground plane under the die to reduce thermal resistance."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad fused to the GND pins that must be soldered to the copper ground plane under the device to reduce 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 LT3430EFE#TRPBF maps to the FE (16-lead plastic TSSOP with exposed pad) package, tape-and-re; Pin types for BOOST (power_in), BIAS (power_in) and VC (passive) are judgment calls mapped to KiCad ; The pinout uses the top-view pin numbering printed on page 2, which lists pins 1-8 on the left and 9"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0842,
        "at": "2026-10-20T11:01:52"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908435115560960",
        "pages": 28,
        "sha256": "9f1cac6b1eef7576",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt3430efe-trpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7982746831c0bd23f4690608869ad67776faae5c762fb0376666126a3998921b",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt3430efe-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
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        "centre_offset_mm": 0,
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        "sha256": "209f4d5a0c11bcae5f63f82607761b3553c6c75e73b643350ac6b5ad0873558f",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "TSSOP-16-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "17"
    },
    "appearance": {
      "contacts": {
        "quote": "exposed pad that is fused to the GND pins. The pad (Pin 17) should be soldered to the copper ground plane under",
        "page": 6,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "9f1cac6b1eef75762d31e9f88d60bfc1b2ad15ebdb73ae0097f00fdb8792804f"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9f1cac6b1eef75762d31e9f88d60bfc1b2ad15ebdb73ae0097f00fdb8792804f",
      "rows": [
        {
          "name": "Reference Voltage (VREF), 25°C row",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.204,
          "typ": 1.219,
          "max": 1.234,
          "conditions": "VOL + 0.2 ≤ VC ≤ VOH – 0.2; 5.5V ≤ VIN ≤ 60V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage, full temperature range",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.195,
          "typ": 1.219,
          "max": 1.243,
          "conditions": "● full operating temperature range; VOL + 0.2 ≤ VC ≤ VOH – 0.2; 5.5V ≤ VIN ≤ 60V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error Amp gm, 25°C row",
          "symbol": "gm",
          "kind": "electrical",
          "unit": "µMho",
          "min": 1650,
          "typ": 2200,
          "max": 3300,
          "conditions": "dl (VC) = ±10µA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error Amp gm, full temperature range",
          "symbol": "gm",
          "kind": "electrical",
          "unit": "µMho",
          "min": 1000,
          "typ": 2200,
          "max": 4200,
          "conditions": "● dl (VC) = ±10µA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EA Source Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 125,
          "typ": 225,
          "max": 450,
          "conditions": "FB = 1V ●",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EA Sink Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 100,
          "typ": 225,
          "max": 500,
          "conditions": "FB = 1.4V ●",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch Current Limit, cold to 25°C",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 3,
          "typ": 5,
          "max": 6.5,
          "conditions": "VC Open, Boost = VIN + 5V, FB = 1V; –40°C ≤ TJ ≤ 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch Current Limit, TJ = 125°C",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 2.5,
          "typ": 4,
          "max": 5.5,
          "conditions": "VC Open, Boost = VIN + 5V, FB = 1V; TJ = 125°C (Note 9)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Switch Duty Cycle (LT3430), row 1",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 93,
          "typ": null,
          "max": 96,
          "conditions": "FB = 1V ●",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Switch Duty Cycle (LT3430), row 2",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 90,
          "typ": null,
          "max": null,
          "conditions": "FB = 1V ●",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch Frequency (LT3430), row 1",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 184,
          "typ": 200,
          "max": 216,
          "conditions": "VC Set to Give DC = 50% ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Switch Frequency (LT3430), row 2",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 172,
          "typ": 200,
          "max": 228,
          "conditions": "VC Set to Give DC = 50% ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Boost Current, ISW = 0.75A",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 25,
          "typ": null,
          "max": 50,
          "conditions": "Boost = VIN + 5V, ISW = 0.75A ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Boost Current, ISW = 2.5A",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 75,
          "typ": null,
          "max": 120,
          "conditions": "Boost = VIN + 5V, ISW = 2.5A ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Supply Current, row 1",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 30,
          "max": 100,
          "conditions": "SHDN = 0V, VIN ≤ 60V, SW = 0V, VC Open ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Supply Current, row 2",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "SHDN = 0V, VIN ≤ 60V, SW = 0V, VC Open ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.6,
          "max": 5.5,
          "conditions": "Note 3 ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Boost Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": 3,
          "conditions": "ISW ≤ 2.5A ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "FB Input Bias Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -0.2,
          "max": -1.5,
          "conditions": "●",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error Amp Voltage Gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/V",
          "min": null,
          "typ": 200,
          "max": 400,
          "conditions": "Note 2",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch On Resistance, row 1",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.1,
          "max": 0.14,
          "conditions": "ISW = 2.5A, Boost = VIN + 5V (Note 7)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch On Resistance, row 2",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.18,
          "conditions": "ISW = 2.5A, Boost = VIN + 5V (Note 7)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Current (IVIN)",
          "symbol": "IVIN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.5,
          "max": 2.2,
          "conditions": "VBIAS = 5V (Note 6)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bias Supply Current (IBIAS)",
          "symbol": "IBIAS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.1,
          "max": 4.2,
          "conditions": "VBIAS = 5V (Note 6)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation of fSW",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.15,
          "conditions": "5.5V ≤ VIN ≤ 60V ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lockout Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": 2.42,
          "max": 2.53,
          "conditions": "VC Open ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Threshold, shutting down",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.15,
          "typ": 0.37,
          "max": 0.58,
          "conditions": "VC Open, Shutting Down ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Threshold, starting up",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.25,
          "typ": 0.42,
          "max": 0.6,
          "conditions": "VC Open, Starting Up ●",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SYNC Frequency Range (LT3430)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 228,
          "typ": null,
          "max": 700,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (VIN)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BOOST Pin Above SW",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "Note 11",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BOOST Pin Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 68,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SYNC Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SHDN Voltage",
          "symbol": "SHDN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BIAS Pin Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB Pin Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB Pin Current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering, 10 sec)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 sec",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range (LT3430EFE)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Notes 8, 10",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJMAX",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-Ambient Thermal Resistance",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-Case Thermal Resistance",
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