LT8390EFE#TRPBF

{
  "slug": "lt8390efe-trpbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lt8390efe#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "lt8390efe-trpbf.kicad_sym",
    "lt8390efe-trpbf.kicad_mod",
    "lt8390efe-trpbf.glb",
    "lt8390efe-trpbf.step",
    "lt8390efe-trpbf.lbr",
    "docs/hero.png",
    "docs/lt8390efe-trpbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt8390efe-trpbf-hero.glb",
    "lt8390efe-trpbf-hero.overlay.json",
    "lt8390efe-trpbf-etched.glb"
  ],
  "component": {
    "mpn": "LT8390EFE#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "HTSSOP-28",
    "pin_count": 29,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908025238704128",
    "parts": {
      "symbol": "lt8390efe-trpbf.kicad_sym",
      "footprint": "lt8390efe-trpbf.kicad_mod",
      "model_3d": "lt8390efe-trpbf-hero.glb",
      "model_3d_plain": "lt8390efe-trpbf-etched.glb",
      "model_3d_step": "lt8390efe-trpbf-etched.step",
      "model_3d_step_plain": "lt8390efe-trpbf.step",
      "lbr": "lt8390efe-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C673802",
      "digikey": "LT8390EFE#TRPBFTR-ND",
      "mouser": "584-LT8390EFE#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:43:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT8390EFE#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT8390EFE#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BG1",
        "type": "output",
        "description": "Buck side bottom N-channel MOSFET gate drive, swinging from ground to INTVCC."
      },
      {
        "number": "2",
        "name": "BST1",
        "type": "power_out",
        "description": "Buck side bootstrap floating driver supply with an integrated Schottky diode from INTVCC, requiring an external bootstrap capacitor to SW1 and swinging from a diode drop below INTVCC to (VIN + INTVCC)."
      },
      {
        "number": "3",
        "name": "SW1",
        "type": "output",
        "description": "Buck side switch node that swings from a Schottky diode drop below ground up to VIN."
      },
      {
        "number": "4",
        "name": "TG1",
        "type": "output",
        "description": "Buck side top N-channel MOSFET gate drive, swinging from SW1 to BST1."
      },
      {
        "number": "5",
        "name": "LSP",
        "type": "passive",
        "description": "Positive terminal of the buck side inductor current sense resistor (RSENSE), requiring a Kelvin connection for accurate current sensing."
      },
      {
        "number": "6",
        "name": "LSN",
        "type": "passive",
        "description": "Negative terminal of the buck side inductor current sense resistor (RSENSE), requiring a Kelvin connection for accurate current sensing."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply that must be tied to the power input to set buck, buck-boost or boost regions, bypassed locally with a minimum 1µF ceramic capacitor."
      },
      {
        "number": "8",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Internal 5V linear regulator output, supplied from VIN, powering control circuitry and gate drivers and bypassed with a minimum 4.7µF ceramic capacitor."
      },
      {
        "number": "9",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Enable and undervoltage lockout: forcing below 0.3V shuts the part down, above 1.233V gives normal operation, and the 1.220V falling threshold sets UVLO via a resistor divider; tie directly to VIN if unused."
      },
      {
        "number": "10",
        "name": "TEST",
        "type": "input",
        "description": "Factory test pin for testing only, which must be directly connected to ground for the part to operate properly."
      },
      {
        "number": "11",
        "name": "LOADEN",
        "type": "input",
        "description": "Load switch enable input for the high side PMOS load switch; tie to VREF or INTVCC if unused, and forcing it low turns off TG1 and TG2, turns on BG1 and BG2, and turns off LOADTG."
      },
      {
        "number": "12",
        "name": "VREF",
        "type": "power_out",
        "description": "Voltage reference output providing an accurate 2V reference capable of supplying 1mA, bypassed with a 0.47µF ceramic capacitor."
      },
      {
        "number": "13",
        "name": "CTRL",
        "type": "input",
        "description": "Control input that programs the ISP/ISN current sense threshold from VREF or a resistor divider; forcing it below 0.3V stops switching, and tying it to VREF gives the 100mV full scale threshold."
      },
      {
        "number": "14",
        "name": "ISP",
        "type": "input",
        "description": "Positive terminal of the ISP/ISN current sense resistor (RIS), requiring a Kelvin connection for accurate current sensing."
      },
      {
        "number": "15",
        "name": "ISN",
        "type": "input",
        "description": "Negative terminal of the ISP/ISN current sense resistor (RIS), requiring a Kelvin connection for accurate current sensing."
      },
      {
        "number": "16",
        "name": "ISMON",
        "type": "output",
        "description": "ISP/ISN current sense monitor output equal to ten times V(ISP-ISN) plus a 0.25V offset, and tied from master ISMON to slave CTRL in parallel applications."
      },
      {
        "number": "17",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good output that is pulled low when FB is within ±10% of the final regulation voltage and requires an external pull-up resistor."
      },
      {
        "number": "18",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start timer pin with a 12.5µA internal pull-up, where a 0.1µF capacitor is recommended and a resistor to VREF selects hiccup, latch-off (499kΩ) or keep-running (100kΩ) short-circuit fault mode."
      },
      {
        "number": "19",
        "name": "FB",
        "type": "input",
        "description": "Voltage loop feedback input that regulates to 1.00V, where VFB below 0.25V triggers the short-circuit fault mode and VFB above 1.1V turns off TG1, BG1, TG2, BG2 and LOADTG."
      },
      {
        "number": "20",
        "name": "VC",
        "type": "passive",
        "description": "Error amplifier output that sets the inductor current comparator threshold and is compensated with an external RC network."
      },
      {
        "number": "21",
        "name": "RT",
        "type": "passive",
        "description": "Switching frequency setting pin, where a resistor to ground sets the internal oscillator frequency from 150kHz to 650kHz."
      },
      {
        "number": "22",
        "name": "SYNC/SPRD",
        "type": "input",
        "description": "Grounded for internal oscillator frequency, driven by a clock for external synchronization, or tied to INTVCC for ±15% triangle spread spectrum."
      },
      {
        "number": "23",
        "name": "LOADTG",
        "type": "output",
        "description": "High side PMOS load switch top gate drive, a buffered inverted LOADEN signal swinging from the higher of (VOUT-5V) and 1.2V up to VOUT, left unconnected if not used."
      },
      {
        "number": "24",
        "name": "VOUT",
        "type": "power_in",
        "description": "Output supply that must be tied to the power output to set buck, buck-boost or boost regions and serves as the positive rail for LOADTG, bypassed with a minimum 1µF ceramic capacitor."
      },
      {
        "number": "25",
        "name": "TG2",
        "type": "output",
        "description": "Boost side top N-channel MOSFET gate drive, swinging from SW2 to BST2."
      },
      {
        "number": "26",
        "name": "SW2",
        "type": "output",
        "description": "Boost side switch node that swings from a Schottky diode drop below ground up to VOUT."
      },
      {
        "number": "27",
        "name": "BST2",
        "type": "power_out",
        "description": "Boost side bootstrap floating driver supply with an integrated Schottky diode from INTVCC, requiring an external bootstrap capacitor to SW2 and swinging from a diode drop below INTVCC to (VOUT + INTVCC)."
      },
      {
        "number": "28",
        "name": "BG2",
        "type": "output",
        "description": "Boost side bottom N-channel MOSFET gate drive, swinging from ground to INTVCC."
      },
      {
        "number": "29",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad ground that must be soldered directly to the ground plane."
      }
    ],
    "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 TSSOP top-view text was extracted without explicit per-pin coordinates. Pin numbers 1-14 (left c; Pin types are KiCad-class choices made from the pin function descriptions, since the datasheet does ",
          "15/29 pins cited to the wrong page (name found elsewhere): ['3:SW1@p10', '6:LSN@p10', '13:CTRL@p10', '14:ISP@p10']"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0744,
        "at": "2026-10-18T01:41:51"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908025238704128",
        "pages": 32,
        "sha256": "b28ebec4c561175d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt8390efe-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1991448f68595de84edac01c797c6eaa88bcb08b2e080f0f897d014488dc1ecd",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}