component
LM5066IPMHE
Public Made by Adomby adom
Texas Instruments Monitors & Reset Circuits, HTSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "lm5066ipmhe",
"title": "LM5066IPMHE",
"brief": "Texas Instruments Monitors & Reset Circuits, 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",
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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": {
"symbol": "lm5066ipmhe.kicad_sym",
"footprint": "lm5066ipmhe.kicad_mod",
"model_3d": "lm5066ipmhe-hero.glb",
"model_3d_plain": "lm5066ipmhe-etched.glb",
"model_3d_step": "lm5066ipmhe-etched.step",
"model_3d_step_plain": "lm5066ipmhe.step",
"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
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
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"centre_offset_mm": 0,
"footprint_binding": "identity",
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"checked": "2026-10-23",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lm5066ipmhe-etched.step",
"role": "eda",
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"footprint_binding": "identity",
"sha256": "7522d197631192725efae6d388b6ea13459b1d0b1619bd2ae8fc8b7793f9fe72",
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}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-28-EP",
"Category": "Power Management ICs",
"Pins": "29"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "1c957c735de35462e69a0d822ac6e0c3f7c98349b238b30e021fcfb7e28b489a",
"rows": [
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "ESD HBM, all pins except GATE",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "kV",
"min": -2,
"typ": null,
"max": 2,
"conditions": "Human body model, ANSI/ESDA/JEDEC JS-001",
"source_page": 5,
"source": "datasheet"
},
{
"name": "ESD CDM, all pins",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": -500,
"typ": null,
"max": 500,
"conditions": "JESD22-C101",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN, SENSE, OUT voltage",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 10,
"typ": null,
"max": 80,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 35.6,
"max": null,
"conditions": "PWP 28 pins",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 19.9,
"max": null,
"conditions": "PWP 28 pins",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Junction-to-board thermal resistance",
"symbol": "RθJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 16.8,
"max": null,
"conditions": "PWP 28 pins",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Junction-to-case (bottom) thermal resistance",
"symbol": "RθJC(bot)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 2.9,
"max": null,
"conditions": "PWP 28 pins",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Input current, enabled",
"symbol": "IIN-EN",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 5.6,
"max": 7,
"conditions": "VUVLO = 3 V and VOVLO = 2 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "POR threshold to trigger insertion timer",
"symbol": "PORIT",
"kind": "electrical",
"unit": "V",
"min": 7.8,
"typ": null,
"max": 9,
"conditions": "VVIN increasing",
"source_page": 6,
"source": "datasheet"
},
{
"name": "POR threshold to enable all functions",
"symbol": "POREN",
"kind": "electrical",
"unit": "V",
"min": 8.6,
"typ": null,
"max": 9.9,
"conditions": "VVIN increasing",
"source_page": 6,
"source": "datasheet"
},
{
"name": "POREN hysteresis",
"symbol": "PORHYS",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 100,
"max": null,
"conditions": "VVIN decreasing",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VDD voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 4.6,
"typ": 4.9,
"max": 5.15,
"conditions": "IVDD = 0 mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VDD voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 4.6,
"typ": 4.85,
"max": 5.15,
"conditions": "IVDD = 10 mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VDD current limit",
"symbol": "VDDILIM",
"kind": "electrical",
"unit": "mA",
"min": -50,
"typ": -30,
"max": -15,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VDD reset threshold",
"symbol": "VDDPOR",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 4.1,
"max": null,
"conditions": "VVDD rising",
"source_page": 6,
"source": "datasheet"
},
{
"name": "UVLO threshold",
"symbol": "UVLOTH",
"kind": "electrical",
"unit": "V",
"min": 2.41,
"typ": 2.48,
"max": 2.55,
"conditions": "VUVLO falling",
"source_page": 6,
"source": "datasheet"
},
{
"name": "UVLO hysteresis current",
"symbol": "UVLOHYS",
"kind": "electrical",
"unit": "µA",
"min": 16,
"typ": 20,
"max": 24,
"conditions": "VUVLO = 1 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "UVLO bias current",
"symbol": "UVLOBIAS",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VUVLO = 3 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "OVLO threshold",
"symbol": "OVLOTH",
"kind": "electrical",
"unit": "V",
"min": 2.39,
"typ": 2.46,
"max": 2.53,
"conditions": "VOVLO rising",
"source_page": 6,
"source": "datasheet"
},
{
"name": "OVLO hysteresis current",
"symbol": "OVLOHYS",
"kind": "electrical",
"unit": "µA",
"min": -24,
"typ": -21,
"max": -16,
"conditions": "VOVLO = 1 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "OVLO bias current",
"symbol": "OVLOBIAS",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VOVLO = 1 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "PGD output low voltage",
"symbol": "PGDVOL",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 100,
"max": 400,
"conditions": "ISINK = 2 mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "PGD off leakage current",
"symbol": "PGDIOH",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VPGD = 80 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "FB threshold",
"symbol": "FBTH",
"kind": "electrical",
"unit": "V",
"min": 2.41,
"typ": 2.46,
"max": 2.52,
"conditions": "VUVLO = 3 V and VOVLO = 2 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "FB hysteresis current",
"symbol": "FBHYS",
"kind": "electrical",
"unit": "µA",
"min": -25,
"typ": -20,
"max": -15,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "FB off leakage current",
"symbol": "FBLEAK",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VFB = 2.3 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power limit sense voltage",
"symbol": "VVIN_K – VSENSE",
"kind": "electrical",
"unit": "mV",
"min": 7.4,
"typ": 9.4,
"max": 11.4,
"conditions": "VSENSE – VOUT = 48 V, RPWR = 60 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power limit sense voltage",
"symbol": "VVIN_K – VSENSE",
"kind": "electrical",
"unit": "mV",
"min": 1.5,
"typ": 3.5,
"max": 5.7,
"conditions": "VSENSE – VOUT = 48 V, RPWR = 20 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power limit sense voltage",
"symbol": "VVIN_K – VSENSE",
"kind": "electrical",
"unit": "mV",
"min": 1.85,
"typ": 3.5,
"max": 5.02,
"conditions": "VSENSE – VOUT = 48 V, RPWR = 20 kΩ, TJ = 0°C to 85°C",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power limit sense voltage",
"symbol": "VVIN_K – VSENSE",
"kind": "electrical",
"unit": "mV",
"min": 15,
"typ": 18.75,
"max": 22.5,
"conditions": "VSENSE – VOUT = 24 V, RPWR = 60 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power limit sense voltage",
"symbol": "VVIN_K – VSENSE",
"kind": "electrical",
"unit": "mV",
"min": 5,
"typ": 7.23,
"max": 10,
"conditions": "VSENSE – VOUT = 24 V, RPWR = 20 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "PWR pin current",
"symbol": "IPWR",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": -20,
"max": null,
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