component
LP8543SQ
Public Made by Adomby adom
Texas Instruments Global Sourcing Parts, WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "lp8543sq",
"title": "LP8543SQ",
"brief": "Texas Instruments Global Sourcing Parts, WQFN-24-EP(4x4). 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",
"global sourcing parts",
"lp8543sq",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "LP8543SQ",
"manufacturer": "Texas Instruments",
"package": "WQFN-24-EP(4x4)",
"pin_count": 25,
"category": "Global Sourcing Parts",
"subcategory": "Global Sourcing Parts",
"datasheet": "https://www.ti.com/cn/lit/gpn/lp8543",
"parts": {
"symbol": "lp8543sq.kicad_sym",
"footprint": "lp8543sq.kicad_mod",
"model_3d": "lp8543sq-hero.glb",
"model_3d_plain": "lp8543sq.glb",
"model_3d_step": "lp8543sq-etched.step",
"model_3d_step_plain": "lp8543sq.step",
"lbr": "lp8543sq.lbr"
},
"distributor_links": {
"lcsc": "C2678756",
"digikey": "LP8543SQTR-ND"
},
"distributor_check": {
"checked_at": "2026-10-11T09:21:11Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "LP8543SQTR-ND",
"status": "found",
"lifecycle": "Obsolete"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "GND_SW",
"type": "power_in",
"description": "Boost ground."
},
{
"number": "2",
"name": "PWM",
"type": "input",
"description": "PWM dimming input; this pin must be connected to GND if not used."
},
{
"number": "3",
"name": "IF_SEL",
"type": "input",
"description": "Serial interface mode selection: Low selects the I2C-compatible interface and High selects the SMBus interface."
},
{
"number": "4",
"name": "EN",
"type": "input",
"description": "Enable input pin."
},
{
"number": "5",
"name": "ALSI",
"type": "input",
"description": "Ambient light sensor frequency input; this pin must be connected to GND if ALS is not used."
},
{
"number": "6",
"name": "ALSO",
"type": "output",
"description": "Ambient light sensor enable output."
},
{
"number": "7",
"name": "FAULT",
"type": "output",
"description": "Fault indication output, open-drain (OD) type."
},
{
"number": "8",
"name": "VDDIO",
"type": "power_in",
"description": "Digital IO reference voltage, 1.65V to 5.5V as printed in the pin table; needed in SMBus/I2C and stand-alone mode."
},
{
"number": "9",
"name": "GND_S",
"type": "power_in",
"description": "Signal ground."
},
{
"number": "10",
"name": "SCLK",
"type": "input",
"description": "Serial clock; this pin must be connected to GND if not used."
},
{
"number": "11",
"name": "SDA",
"type": "bidirectional",
"description": "Serial data; this pin must be connected to GND if not used."
},
{
"number": "12",
"name": "OUT1",
"type": "passive",
"description": "Current sink output."
},
{
"number": "13",
"name": "OUT2",
"type": "passive",
"description": "Current sink output."
},
{
"number": "14",
"name": "OUT3",
"type": "passive",
"description": "Current sink output."
},
{
"number": "15",
"name": "GND_L",
"type": "power_in",
"description": "Ground for current sink outputs."
},
{
"number": "16",
"name": "OUT4",
"type": "passive",
"description": "Current sink output."
},
{
"number": "17",
"name": "OUT5",
"type": "passive",
"description": "Current sink output; can be left floating if not used."
},
{
"number": "18",
"name": "OUT6",
"type": "passive",
"description": "Current sink output; can be left floating if not used."
},
{
"number": "19",
"name": "OUT7",
"type": "passive",
"description": "Current sink output; can be left floating if not used."
},
{
"number": "20",
"name": "ADR",
"type": "input",
"description": "Serial interface address selection; this pin must be connected to GND if not used."
},
{
"number": "21",
"name": "FB",
"type": "passive",
"description": "Boost feedback input."
},
{
"number": "22",
"name": "VLDO",
"type": "power_out",
"description": "LDO output voltage; a 470 nF capacitor should be connected to this pin."
},
{
"number": "23",
"name": "VIN",
"type": "power_in",
"description": "Input power supply, 5.5V to 22V."
},
{
"number": "24",
"name": "SW",
"type": "passive",
"description": "Boost switch."
},
{
"number": "25",
"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 provided text does not mention an exposed thermal pad (EP). The package hint says WQFN-24-EP, bu; FAULT is listed as OD (open drain). The KiCad type set has no open-drain class, so it is mapped to o; VLDO is listed as type A (analog) in the datasheet. It is mapped to power_out because it is describe",
"exposed pad 25 added from the footprint"
],
"pages_sent": 8,
"cost_usd": 0.0491,
"at": "2026-10-11T09:20:56"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lp8543",
"pages": 43,
"sha256": "79e09fe108595935",
"source_tier": "lcsc"
},
"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": "lp8543sq.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lp8543sq-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "40904a7f168fd0de702f2d00edb1e47da2fdf0a2bd2ed9fd5d2d11f112dd2493",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "WQFN-24-EP(4x4)",
"Category": "Global Sourcing Parts",
"Pins": "25"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"lp8543sq"
],
"discovery_pitch": "LP8543SQ (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",
"lp8543sq.kicad_sym",
"lp8543sq.kicad_mod",
"lp8543sq.glb",
"lp8543sq.step",
"lp8543sq.lbr",
"docs/hero.png",
"docs/lp8543sq-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"lp8543sq-hero.glb",
"lp8543sq-hero.overlay.json"
],
"visibility": {
"public": true
}
}