LM5066IPMHE

{
  "slug": "lm5066ipmhe",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Monitors & Reset Circuits, HTSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lm5066ipmhe",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "lm5066ipmhe.step",
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  "component": {
    "mpn": "LM5066IPMHE",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28-EP",
    "pin_count": 29,
    "category": "Power Management ICs",
    "subcategory": "Monitors & Reset Circuits",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm5066ipmhe.pdf",
    "parts": {
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      "footprint": "lm5066ipmhe.kicad_mod",
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      "lbr": "lm5066ipmhe.lbr"
    },
    "distributor_links": {
      "lcsc": "C1848356"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:10:31Z",
      "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 feedback; connect to the output rail (external MOSFET source), used internally to determine MOSFET VDS for power limiting and to monitor the output voltage."
      },
      {
        "number": "2",
        "name": "GATE",
        "type": "output",
        "description": "Gate drive output; connect to the external MOSFET's gate."
      },
      {
        "number": "3",
        "name": "SENSE",
        "type": "input",
        "description": "Current sense input; the voltage across RSNS is measured from VIN_K to this pin, and if it reaches the overcurrent threshold the load current is limited and the fault timer activates."
      },
      {
        "number": "4",
        "name": "VIN_K",
        "type": "input",
        "description": "Positive supply Kelvin pin on which the input voltage is measured."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Positive supply input connection for the device, operating range 10 V to 80 V."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "7",
        "name": "UVLO/EN",
        "type": "input",
        "description": "Undervoltage lockout set by an external resistor divider with enable threshold nominally 2.48 V and 20-µA hysteresis current source; also usable for remote shutdown."
      },
      {
        "number": "8",
        "name": "OVLO",
        "type": "input",
        "description": "Overvoltage lockout set by an external resistor divider with disable threshold of 2.46 V and 21-µA hysteresis current source."
      },
      {
        "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."
      },
      {
        "number": "11",
        "name": "SDAI",
        "type": "input",
        "description": "SMBus data input; connect to SDAO if the application does not require unidirectional isolation devices."
      },
      {
        "number": "12",
        "name": "SDAO",
        "type": "output",
        "description": "SMBus data output; connect to SDAI if the application does not require unidirectional isolation devices."
      },
      {
        "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; bypass with a 1-µF capacitor to ground."
      },
      {
        "number": "16",
        "name": "DIODE",
        "type": "passive",
        "description": "Connect to a diode-configured MMBT3904 NPN transistor for temperature monitoring; ground if unused."
      },
      {
        "number": "17",
        "name": "VAUX",
        "type": "input",
        "description": "Auxiliary voltage input for telemetry from an external source, full-scale input of 2.97 V."
      },
      {
        "number": "18",
        "name": "ADR2",
        "type": "input",
        "description": "Tri-state SMBus address line 2; connect to GND, VDD, or leave floating."
      },
      {
        "number": "19",
        "name": "ADR1",
        "type": "input",
        "description": "Tri-state SMBus address line 1; connect to GND, VDD, or leave floating."
      },
      {
        "number": "20",
        "name": "ADR0",
        "type": "input",
        "description": "Tri-state SMBus address line 0; connect to GND, VDD, or leave floating."
      },
      {
        "number": "21",
        "name": "VDD",
        "type": "power_out",
        "description": "Internally sub-regulated 4.85-V bias supply, current limited to 30 mA; bypass with a 1-µF capacitor to ground."
      },
      {
        "number": "22",
        "name": "CL",
        "type": "input",
        "description": "Current limit range; GND or floating sets the nominal threshold at 50 mV, connecting to VDD sets it to 26 mV."
      },
      {
        "number": "23",
        "name": "FB",
        "type": "input",
        "description": "Power good feedback; external resistor divider from the output sets the PGD switching voltage, threshold nominally 2.46 V with 20-µA hysteresis current."
      },
      {
        "number": "24",
        "name": "RETRY",
        "type": "input",
        "description": "Fault retry input; GND or floating makes the device continually retry power-up during a fault, VDD makes it latch off during a fault."
      },
      {
        "number": "25",
        "name": "TIMER",
        "type": "passive",
        "description": "External capacitor sets insertion time delay, fault timeout period, and restart timing."
      },
      {
        "number": "26",
        "name": "PWR",
        "type": "passive",
        "description": "Power limit set; an external resistor with RSNS sets the maximum power dissipation allowed in the external series pass MOSFET."
      },
      {
        "number": "27",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "28",
        "name": "PGD",
        "type": "output",
        "description": "Open-drain power good indicator, high when FB is above 2.46 V and the input supply is within UV and OV thresholds; capable of sustaining 80 V off-state."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed pad; solder to the ground plane to reduce thermal resistance."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-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 exposed pad no pin number. I assigned '29' (EP) as a placeholder. It says to; The orderable is LM5066IPMHE/NOPB in the PWP (HTSSOP-28) package, and the datasheet shows only this ",
          "1/29 pins cited to the wrong page (name found elsewhere): ['29:EP@p3']"
        ],
        "pages_sent": 15,
        "cost_usd": 0.178,
        "at": "2026-10-23T09:10:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm5066ipmhe.pdf",
        "pages": 70,
        "sha256": "1c957c735de35462",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  }
}