LM5066PMH

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm5066pmh",
  "title": "LM5066PMH",
  "brief": "Texas Instruments Surge Protection Devices (SPDs), HTSSOP-28-EP. 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",
    "circuit protection",
    "lm5066pmh",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM5066PMH",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28-EP",
    "pin_count": 29,
    "category": "Circuit Protection",
    "subcategory": "Surge Protection Devices (SPDs)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm5066",
    "parts": {
      "symbol": "lm5066pmh.kicad_sym",
      "footprint": "lm5066pmh.kicad_mod",
      "model_3d": "lm5066pmh-hero.glb",
      "model_3d_plain": "lm5066pmh.glb",
      "model_3d_step": "lm5066pmh-etched.step",
      "model_3d_step_plain": "lm5066pmh.step",
      "lbr": "lm5066pmh.lbr"
    },
    "distributor_links": {
      "lcsc": "C1553979"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T20:17:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "input",
        "description": "Output rail sense connection (external MOSFET source) used to determine MOSFET VDS for power limiting and to monitor output voltage; absolute maximum 100 V to GND."
      },
      {
        "number": "2",
        "name": "GATE",
        "type": "output",
        "description": "Gate drive output that connects to the external MOSFET gate; absolute maximum 100 V to GND and 1 kV HBM ESD rating."
      },
      {
        "number": "3",
        "name": "SENSE",
        "type": "input",
        "description": "Current sense input; the voltage across the sense resistor RSNS is measured from VIN_K to this pin, and absolute maximum is 100 V to GND and ±0.3 V to VIN_K."
      },
      {
        "number": "4",
        "name": "VIN_K",
        "type": "power_in",
        "description": "Positive supply Kelvin pin on which the input voltage is measured, and the sense-resistor connection on the high side of RSNS."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply connection for the device; recommended operating range 10 V to 80 V, absolute maximum 100 V to GND."
      },
      {
        "number": "6",
        "name": "N/C",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "7",
        "name": "UVLO/EN",
        "type": "input",
        "description": "Undervoltage lockout and enable input set by an external divider from VIN, with 20-µA hysteresis current and nominal enable threshold of 2.48 V; can be used for remote shutdown."
      },
      {
        "number": "8",
        "name": "OVLO",
        "type": "input",
        "description": "Overvoltage lockout input set by an external divider from VIN, with 21-µA hysteresis current and disable threshold of 2.46 V."
      },
      {
        "number": "9",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog device ground; connect to GND at the pin."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Circuit ground for the device."
      },
      {
        "number": "11",
        "name": "SDAI",
        "type": "input",
        "description": "SMBus data input pin; connect to SDAO if unidirectional isolation devices are not required."
      },
      {
        "number": "12",
        "name": "SDAO",
        "type": "output",
        "description": "SMBus data output pin; connect to SDAI if unidirectional isolation devices are not required."
      },
      {
        "number": "13",
        "name": "SCL",
        "type": "input",
        "description": "SMBus clock pin."
      },
      {
        "number": "14",
        "name": "SMBA",
        "type": "output",
        "description": "SMBus alert pin, active low."
      },
      {
        "number": "15",
        "name": "VREF",
        "type": "power_in",
        "description": "Internally generated precision reference for analog-to-digital conversion; connect a 1-µF capacitor to ground for bypassing (nominal 2.97 V per the VREF dropout note)."
      },
      {
        "number": "16",
        "name": "DIODE",
        "type": "passive",
        "description": "Connect to a diode-configured MMBT3904 NPN transistor for remote temperature monitoring; leave grounded if temperature measurement is not used."
      },
      {
        "number": "17",
        "name": "VAUX",
        "type": "input",
        "description": "Auxiliary voltage input for telemetry from an external source with full-scale input of 2.97 V."
      },
      {
        "number": "18",
        "name": "ADR2",
        "type": "tri_state",
        "description": "SMBus address line 2; tri-state input that should be connected to GND, VDD, or left floating."
      },
      {
        "number": "19",
        "name": "ADR1",
        "type": "tri_state",
        "description": "SMBus address line 1; tri-state input that should be connected to GND, VDD, or left floating."
      },
      {
        "number": "20",
        "name": "ADR0",
        "type": "tri_state",
        "description": "SMBus address line 0; tri-state input that should be connected to GND, VDD, or left floating."
      },
      {
        "number": "21",
        "name": "VDD",
        "type": "power_out",
        "description": "Internal sub-regulator output of nominally 4.85 V (4.9 V in the feature description); connect a 1-µF ceramic capacitor to ground and do not load with other ICs, current-limited to 30 mA."
      },
      {
        "number": "22",
        "name": "CL",
        "type": "input",
        "description": "Current limit range select: connect to GND or leave floating for a 50-mV overcurrent threshold, or connect to VDD for 26 mV."
      },
      {
        "number": "23",
        "name": "FB",
        "type": "input",
        "description": "Power good feedback input; an external divider from the output sets the PGD switching point, with a nominal threshold of 2.46 V and 20-µA hysteresis current."
      },
      {
        "number": "24",
        "name": "RETRY",
        "type": "input",
        "description": "Fault retry configuration input: connected to GND or floating gives continuous retry during a fault, while connection to VDD latches the device off after a fault."
      },
      {
        "number": "25",
        "name": "TIMER",
        "type": "passive",
        "description": "Timing capacitor pin that sets insertion time delay, fault timeout period, and restart timing; the fault discharge threshold is 3.9 V."
      },
      {
        "number": "26",
        "name": "PWR",
        "type": "input",
        "description": "Power limit set: an external resistor from this pin, together with RSNS, sets the maximum power dissipation allowed in the series pass MOSFET."
      },
      {
        "number": "27",
        "name": "N/C",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "28",
        "name": "PGD",
        "type": "output",
        "description": "Open-drain power good output that is high when FB is above VFBTH (nominally 2.46 V) and VIN is within its UVLO and OVLO thresholds; the drain tolerates 80 V off-state and 100 V transients, so pull up to a suitable voltage."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 exposed thermal pad of the HTSSOP package is not given a pin number in the datasheet. The text s; The VDD sub-regulator output voltage is stated as 4.85 V in the pin description (page 4) and as 4.9 ; The datasheet's pinout figure is garbled in text extraction, so pin numbers were taken from the Pin ",
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0933,
        "at": "2026-10-10T20:17:01"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5066",
        "pages": 66,
        "sha256": "cbb1347886195422",
        "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"
    },
    "models_3d": [
      {
        "file": "lm5066pmh.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm5066pmh-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "82c33679ad71f77b9ff0d2038b2ce05ee69c4f16bd398accf23458cdb7e0c658",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-28-EP",
      "Category": "Circuit Protection",
      "Pins": "29"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm5066pmh"
  ],
  "discovery_pitch": "LM5066PMH (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",
    "lm5066pmh.kicad_sym",
    "lm5066pmh.kicad_mod",
    "lm5066pmh.glb",
    "lm5066pmh.step",
    "lm5066pmh.lbr",
    "docs/hero.png",
    "docs/lm5066pmh-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm5066pmh-hero.glb",
    "lm5066pmh-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}