LTC4079EDD#TRPBF

{
  "slug": "ltc4079edd-trpbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Battery Management ICs, DFN-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "ltc4079edd#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ltc4079edd-trpbf.kicad_sym",
    "ltc4079edd-trpbf.kicad_mod",
    "ltc4079edd-trpbf.glb",
    "ltc4079edd-trpbf.step",
    "ltc4079edd-trpbf.lbr",
    "docs/hero.png",
    "docs/ltc4079edd-trpbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ltc4079edd-trpbf-hero.glb",
    "ltc4079edd-trpbf-hero.overlay.json",
    "ltc4079edd-trpbf-etched.glb"
  ],
  "component": {
    "mpn": "LTC4079EDD#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "DFN-10-EP(3x3)",
    "pin_count": 11,
    "category": "Power Management ICs",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4079.pdf",
    "parts": {
      "symbol": "ltc4079edd-trpbf.kicad_sym",
      "footprint": "ltc4079edd-trpbf.kicad_mod",
      "model_3d": "ltc4079edd-trpbf-hero.glb",
      "model_3d_plain": "ltc4079edd-trpbf-etched.glb",
      "model_3d_step": "ltc4079edd-trpbf-etched.step",
      "model_3d_step_plain": "ltc4079edd-trpbf.step",
      "lbr": "ltc4079edd-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C687267",
      "digikey": "LTC4079EDD#TRPBFTR-ND",
      "mouser": "584-LTC4079EDD#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T18:28:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LTC4079EDD#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LTC4079EDD#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin that powers the battery charger, with an operating supply range of 2.7V to 60V and a recommended bypass of a ceramic capacitor of at least 1µF."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable input where charge current starts when it rises above the 1.190V regulation threshold, the device shuts down when pulled below 0.750V, and the pin should not be left floating."
      },
      {
        "number": "3",
        "name": "PROG",
        "type": "passive",
        "description": "Charge current program pin whose current is 1/250th of the BAT pin current, servos to 1.190V in constant-current mode, must not be left open, and should have less than 50pF of parasitic capacitance."
      },
      {
        "number": "4",
        "name": "NTCBIAS",
        "type": "output",
        "description": "NTC thermistor bias output that connects through a low drift bias resistor to the NTC pin, with parasitic capacitance on this pin minimized."
      },
      {
        "number": "5",
        "name": "NTC",
        "type": "input",
        "description": "Input to the battery temperature sense circuit, where the room temperature thermistor value should be at least 2kΩ and tying the pin to GND disables battery temperature sensing."
      },
      {
        "number": "6",
        "name": "TIMER",
        "type": "passive",
        "description": "Timer capacitor input that sets the maximum charge duration using CTIMER = tTIMER × 18.2nF/Hr, where a typical 100nF terminates charging after 5½ hours, and tying the pin to GND disables the timer."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status output that is pulled low by an internal NMOS while charging and goes high impedance when the charge current drops below 1/10th of the programmed current or the charge cycle is timer terminated."
      },
      {
        "number": "8",
        "name": "FBG",
        "type": "passive",
        "description": "Ground reference for the battery voltage divider that connects internally to ground through an NMOS switch during charging, presenting RFBG = 160Ω when sensing the battery voltage."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Sense pin for the divided battery voltage that servos to 1.170V (VFB(CHG)) during the constant-voltage phase, requiring minimal leakage and parasitic capacitance."
      },
      {
        "number": "10",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery charger output that provides charge current to the battery, with an absolute maximum BAT current of -400mA."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground on the exposed pad, which must be soldered to a continuous ground plane of the PCB for electrical connection and the rated thermal performance."
      }
    ],
    "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: Pin numbers and names were taken from the PIN FUNCTIONS section (page 7), which states each number e; The DD package ordering entry for LTC4079EDD#TRPBF (page 2) is the 10-lead 3mm x 3mm DFN, which matc"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0416,
        "at": "2026-10-30T18:28:03"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4079.pdf",
        "pages": 20,
        "sha256": "d1866d55d66d6f92",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ltc4079edd-trpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "738e2eb45860c11759f8e4f44ab26932b7c15e4d5d6c8c9ac22ae866a3e38711",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc4079edd-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3bdbac28ba23ae3a63a2eb4ad4f2c4f454fda62aa1ee2309d980fbf6aa5c72b8",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "DD",
      "source_page": 18,
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "ltc4079edd-trpbf.step",
        "verdict": "SKIP",
        "reasons": [
          "the datasheet dimensions give no height or body size to compare"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}