LT8471EFE#TRPBF

{
  "slug": "lt8471efe-trpbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lt8471efe#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt8471efe-trpbf.kicad_sym",
    "lt8471efe-trpbf.kicad_mod",
    "lt8471efe-trpbf.glb",
    "lt8471efe-trpbf.step",
    "lt8471efe-trpbf.lbr",
    "docs/hero.png",
    "docs/lt8471efe-trpbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt8471efe-trpbf-hero.glb",
    "lt8471efe-trpbf-hero.overlay.json",
    "lt8471efe-trpbf-etched.glb"
  ],
  "component": {
    "mpn": "LT8471EFE#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908473710600192",
    "parts": {
      "symbol": "lt8471efe-trpbf.kicad_sym",
      "footprint": "lt8471efe-trpbf.kicad_mod",
      "model_3d": "lt8471efe-trpbf-hero.glb",
      "model_3d_plain": "lt8471efe-trpbf-etched.glb",
      "model_3d_step": "lt8471efe-trpbf-etched.step",
      "model_3d_step_plain": "lt8471efe-trpbf.step",
      "lbr": "lt8471efe-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C673847",
      "digikey": "LT8471EFE#TRPBFTR-ND",
      "mouser": "584-LT8471EFE#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T01:37:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT8471EFE#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT8471EFE#TRPBF",
        "status": "found",
        "lifecycle": "Restricted Availability"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C1",
        "type": "output",
        "description": "Collector of the primary channel 1 internal NPN power switch; if tied to a DC voltage it must be locally bypassed, and if it is a switching pin its trace area must be minimized to reduce EMI."
      },
      {
        "number": "2",
        "name": "E1",
        "type": "passive",
        "description": "Emitter of the primary channel 1 internal NPN power switch; unless grounded, its trace area must be minimized to reduce EMI."
      },
      {
        "number": "3",
        "name": "VIN1",
        "type": "power_in",
        "description": "Input supply 1 for primary channel 1 and the Skyhook channel, which also powers common circuitry; VIN1 must be greater than 2.6V for any channel to operate and must be locally bypassed."
      },
      {
        "number": "4",
        "name": "PG1",
        "type": "output",
        "description": "Open-drain power-good output for channel 1 that is pulled low when the output is more than 7.5% below target and released when the output is above 92.5% of target, requiring an external pull-up resistor."
      },
      {
        "number": "5",
        "name": "FB1",
        "type": "input",
        "description": "Feedback pin for primary channel 1, where a resistor divider between VOUT, FB and GND sets the output voltage."
      },
      {
        "number": "6",
        "name": "OV/UV",
        "type": "input",
        "description": "Overvoltage/undervoltage pin that must be tied to 1.215V (typical) or more to enable the device and grounded to shut down, and can be configured as UVLO and OVLO through an external resistor divider."
      },
      {
        "number": "7",
        "name": "RT",
        "type": "passive",
        "description": "Timing resistor pin that sets the free-running switching frequency through a resistor to ground and must not be left floating."
      },
      {
        "number": "8",
        "name": "SS1",
        "type": "passive",
        "description": "Soft-start pin for channel 1 that takes a soft-start capacitor and is charged nominally through 250k to about 2.15V at start-up."
      },
      {
        "number": "9",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronization input that accepts an external clock with a high level above 1.3V and a low level below 0.4V, and reverts to the internal free-running clock when driven below 0.4V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin that must be soldered directly to the local ground plane."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin that must be soldered directly to the local ground plane."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin that must be soldered directly to the local ground plane."
      },
      {
        "number": "13",
        "name": "C3",
        "type": "output",
        "description": "Collector of the Skyhook channel internal NPN power switch; if the Skyhook channel is not used this pin must be tied to GND, and if used its metal trace area must be minimized to reduce EMI."
      },
      {
        "number": "14",
        "name": "SHOUT",
        "type": "output",
        "description": "Skyhook output voltage pin that is the cathode of the internal Schottky diode and the output of the Skyhook boost converter."
      },
      {
        "number": "15",
        "name": "SS2",
        "type": "passive",
        "description": "Soft-start pin for channel 2 that takes a soft-start capacitor and is charged nominally through 250k to about 2.15V at start-up."
      },
      {
        "number": "16",
        "name": "FB2",
        "type": "input",
        "description": "Feedback pin for primary channel 2, where a resistor divider between VOUT, FB and GND sets the output voltage."
      },
      {
        "number": "17",
        "name": "PG2",
        "type": "output",
        "description": "Open-drain power-good output for channel 2 that is pulled low when the output is more than 7.5% below target and released when the output is above 92.5% of target, requiring an external pull-up resistor."
      },
      {
        "number": "18",
        "name": "VIN2",
        "type": "power_in",
        "description": "Input supply 2 for primary channel 2 that must be greater than 2.6V when channel 2 is in use and must be locally bypassed."
      },
      {
        "number": "19",
        "name": "E2",
        "type": "passive",
        "description": "Emitter of the primary channel 2 internal NPN power switch; unless grounded, its trace area must be minimized to reduce EMI."
      },
      {
        "number": "20",
        "name": "C2",
        "type": "output",
        "description": "Collector of the primary channel 2 internal NPN power switch that must be tied to the Skyhook channel input voltage when the Skyhook channel is used, and must be bypassed or have its trace minimized as for C1."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad that is ground, must be soldered to the PCB, and provides both electrical contact to ground and thermal contact to the board."
      }
    ],
    "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 datasheet gives the TSSOP pin-to-name mapping on page 2 (pins 1-10 down the left, 11-20 up the r; Only pages 1-8 of 36 were provided. Pin 21 is the exposed pad, which the datasheet labels GND, and t"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0619,
        "at": "2026-10-21T01:30:52"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908473710600192",
        "pages": 36,
        "sha256": "245eb55e0302d439",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt8471efe-trpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.41,
          6.5,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dfd8d9dafe324783d4fb3b9d8bf5ab613ebab3b99693f9abd94b306a5e9b8b98",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt8471efe-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.41,
          6.5,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3bc5493bff4cb65c60b2fc5e71d768791cb32e498e0f97136e97e32daf98f5f1",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}