LM5071MTX-80

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm5071mtx-80",
  "title": "LM5071MTX-80",
  "brief": "Texas Instruments Power Over Ethernet (PoE) Controllers, TSSOP-16. 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)",
    "lm5071mtx-80",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM5071MTX-80",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Over Ethernet (PoE) Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm5071",
    "parts": {
      "symbol": "lm5071mtx-80.kicad_sym",
      "footprint": "lm5071mtx-80.kicad_mod",
      "model_3d": "lm5071mtx-80-hero.glb",
      "model_3d_plain": "lm5071mtx-80.glb",
      "model_3d_step": "lm5071mtx-80-etched.step",
      "model_3d_step_plain": "lm5071mtx-80.step",
      "lbr": "lm5071mtx-80.lbr"
    },
    "distributor_links": {
      "lcsc": "C2870599"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T18:50:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "System high potential input, the diode-OR of the lines entering the PD and the more positive input potential; operating VIN range is 1.8V to 60V and absolute maximum VIN to VEE is 80V."
      },
      {
        "number": "2",
        "name": "RSIG",
        "type": "passive",
        "description": "Signature resistor connection; a resistor from VIN to this pin sets signature detection and sits in parallel with the UVLO resistors, with RSIG to VIN rated -12V to 0V."
      },
      {
        "number": "3",
        "name": "RCLASS",
        "type": "passive",
        "description": "Classification resistor connection; the classification programming resistor connects from this pin to VEE, with RCLASS to VEE rated -0.3V to 7V."
      },
      {
        "number": "4",
        "name": "AUX",
        "type": "input",
        "description": "Auxiliary input startup pin; a resistor divider from the AUX voltage to VEE sets startup levels against a 2.5V threshold, with AUX to VEE rated -0.3V to 57V and an internal pull-down above 300kΩ when open."
      },
      {
        "number": "5",
        "name": "UVLO",
        "type": "input",
        "description": "Line undervoltage lockout input; an external divider from VIN to UVLORTN sets shutdown levels against a 2.00V threshold, with hysteresis from a switched 10uA internal current source and UVLO to VEE rated -0.3V to 13V."
      },
      {
        "number": "6",
        "name": "UVLORTN",
        "type": "passive",
        "description": "Return for the external UVLO resistor divider, connected to the bottom resistor of the divider between the UVLO pin and this pin."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "System low potential input, the diode-OR of the RJ45 connector and PSE -48V supply and the more negative input potential."
      },
      {
        "number": "8",
        "name": "RTN",
        "type": "power_in",
        "description": "System return for the PWM converter, being the drain of the internal current-limiting power MOSFET that connects VEE to the DC-DC converter return path; RTN to VEE is rated -0.3V to 80V."
      },
      {
        "number": "9",
        "name": "OUT",
        "type": "output",
        "description": "PWM controller output driving the DC-DC converter gate with 800mA peak sink current capability, with OUT to ARTN rated -0.3V to 16V."
      },
      {
        "number": "10",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the internal high-voltage series pass regulator, nominally 7.8V, which shuts down when an auxiliary winding raises the voltage above the set point; an external voltage of 8.1V to 15V may be applied, with VCC to ARTN rated -0.3V to 16V."
      },
      {
        "number": "11",
        "name": "FB",
        "type": "input",
        "description": "Feedback signal and inverting input of the internal error amplifier, whose non-inverting input is tied to a 1.25V reference; all other inputs to ARTN are rated -0.3V to 7V."
      },
      {
        "number": "12",
        "name": "COMP",
        "type": "output",
        "description": "Output of the error amplifier feeding the PWM modulator, with an internal 5kΩ pull-up available to bias an opto-coupler transistor."
      },
      {
        "number": "13",
        "name": "CS",
        "type": "input",
        "description": "Current sense input for current-mode control and overcurrent protection, where OUT switches low for cycle-by-cycle limiting when CS exceeds 0.5V and CS is blanked for 50ns after OUT goes high."
      },
      {
        "number": "14",
        "name": "RT / SYNC",
        "type": "input",
        "description": "Oscillator timing resistor connection from RT to ARTN that sets the switching frequency, and synchronization input that accepts narrow AC-coupled pulses from an external clock."
      },
      {
        "number": "15",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start input where an external capacitor and an internal 10uA current source set the soft-start ramp rate."
      },
      {
        "number": "16",
        "name": "ARTN",
        "type": "power_in",
        "description": "Analog PWM supply return for sensitive analog circuitry including the SMPS current limit amplifier, with ARTN to RTN rated -0.3V to 0.3V."
      }
    ],
    "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 Descriptions table on page 3 (text). The page 2 connec; VCC is described as the output of the internal series pass regulator (power_out) but the operating r; Types for RSIG, RCLASS, UVLORTN, and SS were set to passive because they are resistor or capacitor c"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0525,
        "at": "2026-10-08T18:50:01"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5071",
        "pages": 27,
        "sha256": "4e573906dfea5690",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm5071mtx-80.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": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm5071mtx-80-etched.step",
        "role": "eda",
        "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": "3672b66787a94229c2f7423cce4a8b5a25214e8133299b74cedbf268238c32e6",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm5071mtx-80"
  ],
  "discovery_pitch": "LM5071MTX-80 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm5071mtx-80.kicad_sym",
    "lm5071mtx-80.kicad_mod",
    "lm5071mtx-80.glb",
    "lm5071mtx-80.step",
    "lm5071mtx-80.lbr",
    "docs/hero.png",
    "docs/lm5071mtx-80-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm5071mtx-80-hero.glb",
    "lm5071mtx-80-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}