component
LT3742EUF#PBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"version": "0.1.0",
"type": "component",
"description": "Analog Devices DC-DC Converters, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management ics",
"lt3742euf#pbf",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"files": [
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"viewers/footprint.html",
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"lt3742euf-pbf-hero.overlay.json",
"lt3742euf-pbf-etched.glb"
],
"component": {
"mpn": "LT3742EUF#PBF",
"manufacturer": "Analog Devices",
"package": "QFN-24-EP(4x4)",
"pin_count": 25,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3742fa.pdf",
"parts": {
"symbol": "lt3742euf-pbf.kicad_sym",
"footprint": "lt3742euf-pbf.kicad_mod",
"model_3d": "lt3742euf-pbf-hero.glb",
"model_3d_plain": "lt3742euf-pbf-etched.glb",
"model_3d_step": "lt3742euf-pbf-etched.step",
"model_3d_step_plain": "lt3742euf-pbf.step",
"lbr": "lt3742euf-pbf.lbr"
},
"distributor_links": {
"lcsc": "C671338",
"digikey": "505-LT3742EUF#PBF-ND",
"mouser": "584-LT3742EUF#PBF"
},
"distributor_check": {
"checked_at": "2026-10-30T21:04:51Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "505-LT3742EUF#PBF-ND",
"status": "found"
},
"mouser": {
"pn": "584-LT3742EUF#PBF",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "G1",
"type": "output",
"description": "Gate drive output for controller 1's external N-channel MOSFET, a floating driver whose voltage swings between the BIAS and SW pins."
},
{
"number": "2",
"name": "VIN",
"type": "power_in",
"description": "Input voltage pin supplying the internal circuitry (4V to 30V operating, 30V abs max); must be locally bypassed with a capacitor."
},
{
"number": "3",
"name": "UVLO",
"type": "input",
"description": "Undervoltage lockout input with 1.25V threshold programmed by a divider from VIN, 3µA hysteresis current sink; do not leave open, connect to VIN if unused."
},
{
"number": "4",
"name": "BIAS",
"type": "passive",
"description": "Gate-drive bias rail regulated to VIN + 7V to drive the external N-channel MOSFETs (40V abs max)."
},
{
"number": "5",
"name": "SWB",
"type": "output",
"description": "Collector of the internal NPN switch of the bias boost regulator that generates the gate-drive bias voltage (40V abs max, 340mA typ current limit)."
},
{
"number": "6",
"name": "G2",
"type": "output",
"description": "Gate drive output for controller 2's external N-channel MOSFET, a floating driver whose voltage swings between the BIAS and SW pins."
},
{
"number": "7",
"name": "SW2",
"type": "passive",
"description": "Switch node of regulator 2, connected to the source of the external N-channel MOSFET and to the inductor and diode."
},
{
"number": "8",
"name": "NC",
"type": "unconnected",
"description": "No connect pin."
},
{
"number": "9",
"name": "NC",
"type": "unconnected",
"description": "No connect pin."
},
{
"number": "10",
"name": "SENSE2+",
"type": "input",
"description": "Positive current sense input of regulator 2, used with SENSE2- to sense inductor current (30V abs max)."
},
{
"number": "11",
"name": "SENSE2–",
"type": "input",
"description": "Negative current sense input of regulator 2, used with SENSE2+ to sense inductor current (30V abs max)."
},
{
"number": "12",
"name": "FB2",
"type": "input",
"description": "Feedback pin of regulator 2, regulated to 800mV; connect feedback resistors here to set the output voltage."
},
{
"number": "13",
"name": "VC2",
"type": "passive",
"description": "Control voltage and error amplifier compensation pin for regulator 2; connect a series RC to ground."
},
{
"number": "14",
"name": "PG2",
"type": "output",
"description": "Open-collector power good output for regulator 2, low until FB is within 90% of final regulation; leave unconnected if unused."
},
{
"number": "15",
"name": "RUN/SS2",
"type": "input",
"description": "Run/soft-start pin for regulator 2; pull to ground with an open-drain device to shut down, add a capacitor for soft-start (1µA charge current)."
},
{
"number": "16",
"name": "RUN/SS1",
"type": "input",
"description": "Run/soft-start pin for regulator 1; pull to ground with an open-drain device to shut down, add a capacitor for soft-start (1µA charge current)."
},
{
"number": "17",
"name": "PG1",
"type": "output",
"description": "Open-collector power good output for regulator 1, low until FB is within 90% of final regulation; leave unconnected if unused."
},
{
"number": "18",
"name": "VC1",
"type": "passive",
"description": "Control voltage and error amplifier compensation pin for regulator 1; connect a series RC to ground."
},
{
"number": "19",
"name": "FB1",
"type": "input",
"description": "Feedback pin of regulator 1, regulated to 800mV; connect feedback resistors here to set the output voltage."
},
{
"number": "20",
"name": "SENSE1–",
"type": "input",
"description": "Negative current sense input of regulator 1, used with SENSE1+ to sense inductor current (30V abs max)."
},
{
"number": "21",
"name": "SENSE1+",
"type": "input",
"description": "Positive current sense input of regulator 1, used with SENSE1- to sense inductor current (30V abs max)."
},
{
"number": "22",
"name": "NC",
"type": "unconnected",
"description": "No connect pin."
},
{
"number": "23",
"name": "NC",
"type": "unconnected",
"description": "No connect pin."
},
{
"number": "24",
"name": "SW1",
"type": "passive",
"description": "Switch node of regulator 1, connected to the source of the external N-channel MOSFET and to the inductor and diode."
},
{
"number": "25",
"name": "GND",
"type": "power_in",
"description": "Exposed pad, ground; provides electrical and thermal contact to the PCB and must be soldered to the board."
}
],
"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 pin-configuration drawing text on page 2 is scrambled. The NC pin numbers (8, 9, 22, 23) are inf; Pin types for BIAS, SW1/SW2, VC1/VC2 and RUN/SS are judgment calls. The datasheet gives functions, n"
],
"pages_sent": 9,
"cost_usd": 0.1275,
"at": "2026-10-30T21:04:41"
},
"datasheet": {
"url": "https://www.analog.com/media/en/technical-documentation/data-sheets/3742fa.pdf",
"pages": 26,
"sha256": "65fb0720c261b313",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 25,
"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "lt3742euf-pbf.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lt3742euf-pbf-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "69db330878d14c3180fe2eb1b2a67e22241eef8e3f401f7cd25a79f994be59bd",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "UF24",
"source_page": 24,
"D": {
"nom_mm": 4.0,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 4.0,
"range_mm": [
null,
null
]
},
"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": "lt3742euf-pbf.step",
"verdict": "SKIP",
"reasons": [
"the datasheet dimensions give no height or body size to compare"
],
"by": "factory/package_fit.py"
}
}
}
}