LT8390EFE#PBF

{
  "slug": "lt8390efe-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Controllers, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lt8390efe#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "type": "image",
    "path": "docs/hero.png"
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    "README.md",
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    "lt8390efe-pbf.kicad_mod",
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    "lt8390efe-pbf.step",
    "lt8390efe-pbf.lbr",
    "docs/hero.png",
    "docs/lt8390efe-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "lt8390efe-pbf-hero.overlay.json",
    "lt8390efe-pbf-etched.glb"
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  "component": {
    "mpn": "LT8390EFE#PBF",
    "manufacturer": "Analog Devices",
    "package": "TSSOP-28-EP",
    "pin_count": 29,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt8390.pdf",
    "parts": {
      "symbol": "lt8390efe-pbf.kicad_sym",
      "footprint": "lt8390efe-pbf.kicad_mod",
      "model_3d": "lt8390efe-pbf-hero.glb",
      "model_3d_plain": "lt8390efe-pbf-etched.glb",
      "model_3d_step": "lt8390efe-pbf-etched.step",
      "model_3d_step_plain": "lt8390efe-pbf.step",
      "lbr": "lt8390efe-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C111660",
      "digikey": "505-LT8390EFE#PBF-ND",
      "mouser": "584-LT8390EFE#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T01:24:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LT8390EFE#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT8390EFE#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BG1",
        "type": "output",
        "description": "Buck side bottom gate drive for the buck side bottom N-channel MOSFET, swinging from ground to INTVCC."
      },
      {
        "number": "2",
        "name": "BST1",
        "type": "passive",
        "description": "Buck side bootstrap floating driver supply with integrated Schottky diode from INTVCC, needs an external capacitor to SW1 and swings from a diode drop below INTVCC to (VIN + INTVCC)."
      },
      {
        "number": "3",
        "name": "SW1",
        "type": "passive",
        "description": "Buck side switch node that swings from a Schottky diode voltage drop below ground up to VIN."
      },
      {
        "number": "4",
        "name": "TG1",
        "type": "output",
        "description": "Buck side top gate drive for the top N-channel MOSFET, swinging from SW1 to BST1."
      },
      {
        "number": "5",
        "name": "LSP",
        "type": "input",
        "description": "Positive terminal of the buck side inductor current sense resistor (RSENSE); use a Kelvin connection."
      },
      {
        "number": "6",
        "name": "LSN",
        "type": "input",
        "description": "Negative terminal of the buck side inductor current sense resistor (RSENSE); use a Kelvin connection."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply (4V to 60V) that must be tied to the power input to determine buck, buck-boost or boost region, bypassed to ground with at least 1µF ceramic."
      },
      {
        "number": "8",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Internal 5V linear regulator output supplied from VIN that powers control circuitry and gate drivers, bypassed to ground with at least 4.7µF ceramic."
      },
      {
        "number": "9",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Enable and undervoltage lockout input; below 0.3V shuts down the part, above 1.233V enables, 1.220V falling threshold with 2.5µA hysteresis current, tie to VIN if unused."
      },
      {
        "number": "10",
        "name": "TEST",
        "type": "input",
        "description": "Factory test pin that must be connected directly to ground for the part to operate properly."
      },
      {
        "number": "11",
        "name": "LOADEN",
        "type": "input",
        "description": "Load switch enable input controlling the high side PMOS load switch; tie to VREF or INTVCC if unused, and low turns off TG1/TG2 and LOADTG and turns on BG1/BG2."
      },
      {
        "number": "12",
        "name": "VREF",
        "type": "power_out",
        "description": "Accurate 2V reference output capable of supplying 1mA, bypassed to ground with a 0.47µF ceramic capacitor."
      },
      {
        "number": "13",
        "name": "CTRL",
        "type": "input",
        "description": "Control input for the ISP/ISN current sense threshold, 100mV full scale for VCTRL of 1.35V or more (tie to VREF), and below 0.3V stops switching."
      },
      {
        "number": "14",
        "name": "ISP",
        "type": "input",
        "description": "Positive terminal of the ISP/ISN current sense resistor (RIS); use a Kelvin connection."
      },
      {
        "number": "15",
        "name": "ISN",
        "type": "input",
        "description": "Negative terminal of the ISP/ISN current sense resistor (RIS); use a Kelvin connection."
      },
      {
        "number": "16",
        "name": "ISMON",
        "type": "output",
        "description": "Current sense monitor output voltage equal to ten times V(ISP-ISN) plus 0.25V offset."
      },
      {
        "number": "17",
        "name": "PGOOD",
        "type": "output",
        "description": "Power good open-drain output pulled low when FB is within ±10% of final regulation voltage, requiring an external pull-up resistor."
      },
      {
        "number": "18",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start timer pin with a capacitor to ground (0.1µF recommended) charged by 12.5µA, and a resistor to VREF selects hiccup (none), latch-off (499kΩ) or keep-running (100kΩ) fault mode."
      },
      {
        "number": "19",
        "name": "FB",
        "type": "input",
        "description": "Voltage loop feedback input regulated to 1.00V, with short condition below 0.25V and overvoltage above 1.1V turning off all gate drives."
      },
      {
        "number": "20",
        "name": "VC",
        "type": "passive",
        "description": "Error amplifier output setting the inductor current comparator threshold, compensated with an external RC network and disconnected from internal loads when LOADEN is low."
      },
      {
        "number": "21",
        "name": "RT",
        "type": "passive",
        "description": "Switching frequency setting pin; a resistor to ground sets the oscillator from 150kHz to 650kHz."
      },
      {
        "number": "22",
        "name": "SYNC/SPRD",
        "type": "input",
        "description": "Ground for internal oscillator frequency, apply a clock for external synchronization, or tie to INTVCC for ±15% triangle spread spectrum."
      },
      {
        "number": "23",
        "name": "LOADTG",
        "type": "output",
        "description": "High side PMOS load switch gate drive, a buffered inverted LOADEN signal swinging from the higher of (VOUT-5V) and 1.2V to VOUT; leave unconnected if unused."
      },
      {
        "number": "24",
        "name": "VOUT",
        "type": "power_in",
        "description": "Output supply pin tied to the power output to determine operation region and serving as positive rail for LOADTG drive, bypassed with at least 1µF ceramic."
      },
      {
        "number": "25",
        "name": "TG2",
        "type": "output",
        "description": "Boost side top gate drive for the top N-channel MOSFET, swinging from SW2 to BST2."
      },
      {
        "number": "26",
        "name": "SW2",
        "type": "passive",
        "description": "Boost side switch node that swings from a Schottky diode voltage drop below ground to VOUT."
      },
      {
        "number": "27",
        "name": "BST2",
        "type": "passive",
        "description": "Boost side bootstrap floating driver supply with integrated Schottky diode from INTVCC, needs an external capacitor to SW2 and swings from a diode drop below INTVCC to (VOUT + INTVCC)."
      },
      {
        "number": "28",
        "name": "BG2",
        "type": "output",
        "description": "Boost side bottom gate drive for the bottom N-channel MOSFET, 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 pin numbers and names on page 2 are scrambled in the text extraction. The pin-num; Pin types were assigned by function, since the datasheet does not give KiCad ERC classes. BST1, BST2; Pin 29 (exposed pad) is not a numbered lead. It is listed as GND per the page 2 note 'EXPOSED PAD (P",
          "13/29 pins cited to the wrong page (name found elsewhere): ['13:CTRL@p10', '14:ISP@p10', '16:BST2@p11', '17:SW2@p11']"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0809,
        "at": "2026-10-29T01:23:47"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt8390.pdf",
        "pages": 32,
        "sha256": "bedb46ecab867bbe",
        "source_tier": "mfr"
      },
      "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": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt8390efe-pbf-etched.step",
        "role": "eda",
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        "units": "mm",
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        "seat": "z = 0",
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        "sha256": "74e29688a9717d4b2a89ba4c74a64ed96a370b726cbc268b2ebdd0a7f0461164",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}