component
A5947KLPTR-B-T
Public Made by Adomby adom
Allegro MicroSystems, LLC Brushless DC (BLDC) Motor Driver, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "a5947klptr-b-t",
"version": "0.1.0",
"type": "component",
"description": "Allegro MicroSystems, LLC Brushless DC (BLDC) Motor Driver, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"motor driver ics",
"a5947klptr-b-t",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"a5947klptr-b-t.kicad_sym",
"a5947klptr-b-t.kicad_mod",
"a5947klptr-b-t.glb",
"a5947klptr-b-t.step",
"a5947klptr-b-t.lbr",
"docs/hero.png",
"docs/a5947klptr-b-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"a5947klptr-b-t-hero.glb",
"a5947klptr-b-t-hero.overlay.json",
"a5947klptr-b-t-etched.glb"
],
"component": {
"mpn": "A5947KLPTR-B-T",
"manufacturer": "Allegro MicroSystems, LLC",
"package": "TSSOP-20-EP",
"pin_count": 21,
"category": "Motor Driver ICs",
"subcategory": "Brushless DC (BLDC) Motor Driver",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8b9659ad036389524ecc6c6fe7ae9ac7.pdf",
"parts": {
"symbol": "a5947klptr-b-t.kicad_sym",
"footprint": "a5947klptr-b-t.kicad_mod",
"model_3d": "a5947klptr-b-t-hero.glb",
"model_3d_plain": "a5947klptr-b-t-etched.glb",
"model_3d_step": "a5947klptr-b-t-etched.step",
"model_3d_step_plain": "a5947klptr-b-t.step",
"lbr": "a5947klptr-b-t.lbr"
},
"distributor_links": {
"lcsc": "C19761970",
"digikey": "620-A5947KLPTR-B-T-ND",
"mouser": "250-A5947KLPTR-B-T"
},
"distributor_check": {
"checked_at": "2026-10-26T19:37:12Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "620-A5947KLPTR-B-T-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "250-A5947KLPTR-B-T",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "2",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "3",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "4",
"name": "CP1",
"type": "passive",
"description": "Charge pump capacitor connection (CP1 rated -0.3 to VBB + 0.3 V)."
},
{
"number": "5",
"name": "CP2",
"type": "passive",
"description": "Charge pump capacitor connection (CP2 rated VBB - 0.3 to VCP + 0.3 V)."
},
{
"number": "6",
"name": "VCP",
"type": "passive",
"description": "Charge pump capacitor/output pin, rated VBB - 0.3 to VBB + 8 V, typically 7.2 V above VBB at VBB = 8 V."
},
{
"number": "7",
"name": "VBB",
"type": "power_in",
"description": "Input supply, operating 4 to 40 V (absolute maximum -0.7 to 40 V)."
},
{
"number": "8",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "9",
"name": "OUTA",
"type": "output",
"description": "Motor terminal A, absolute maximum VBB + 1 V, output current up to 3.6 A."
},
{
"number": "10",
"name": "LSS",
"type": "passive",
"description": "Low side source connection of the power drivers."
},
{
"number": "11",
"name": "OUTB",
"type": "output",
"description": "Motor terminal B, absolute maximum VBB + 1 V, output current up to 3.6 A."
},
{
"number": "12",
"name": "OUTC",
"type": "output",
"description": "Motor terminal C, absolute maximum VBB + 1 V, output current up to 3.6 A."
},
{
"number": "13",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "14",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "15",
"name": "VREF",
"type": "power_out",
"description": "Reference voltage output, 3.3 V typ (3.15 to 3.45 V) for 0 to 20 mA load."
},
{
"number": "16",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "17",
"name": "TEST",
"type": "output",
"description": "Open-drain logic output, low when motor off and high at end of open loop startup, rated -0.3 to 6 V."
},
{
"number": "18",
"name": "nFAULT",
"type": "output",
"description": "Active-low output indicating VBB undervoltage, VBB overvoltage, thermal shutdown, VCP undervoltage, rotor lock and output VDS (OCP) faults."
},
{
"number": "19",
"name": "SPD",
"type": "input",
"description": "Speed demand input by PWM duty or analog voltage (0 to 6 V abs max, 9-bit ADC), also serves as I2C clock SCL."
},
{
"number": "20",
"name": "FG",
"type": "bidirectional",
"description": "Open-drain speed output representing motor speed, also serves as I2C data line SDA."
},
{
"number": "21",
"name": "PAD",
"type": "passive",
"description": "Exposed pad for enhanced thermal dissipation."
}
],
"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: Exposed pad has no pin number in the datasheet (listed as '–' PAD); numbered '21' here as a placehol; Pin types for CP1, CP2, VCP, LSS and the open-drain outputs are inferred from function descriptions;",
"2/21 pins cited to the wrong page (name found elsewhere): ['17:TEST@p7', '21:PAD@p3']"
],
"pages_sent": 21,
"cost_usd": 0.1656,
"at": "2026-10-26T19:36:53"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/8b9659ad036389524ecc6c6fe7ae9ac7.pdf",
"pages": 21,
"sha256": "f431be2f67e7d90a",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
"models_3d": [
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.41,
6.5,
1.2
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "cd32e235afcee29d73f6747f5bbef996e855e78b32215e479c121b54654a092e",
"checked": "2026-10-26",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "a5947klptr-b-t-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.41,
6.5,
1.2
],
"zmin_mm": 0.0,
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"footprint_binding": "identity",
"sha256": "1e172fc8af88cd6cddeb2b8d38b5a5037ee54a92c835d9f3755e9098050426e3",
"checked": "2026-10-26",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}