component
A5947GETTR-T
Public Made by Adomby adom
Allegro MicroSystems, LLC Pre-ordered Products, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "a5947gettr-t",
"title": "A5947GETTR-T",
"brief": "Allegro MicroSystems, LLC Pre-ordered Products, QFN-28-EP(5x5). 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",
"solders - accessories - batteries",
"a5947gettr-t",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "A5947GETTR-T",
"manufacturer": "Allegro MicroSystems, LLC",
"package": "QFN-28-EP(5x5)",
"pin_count": 29,
"category": "Solders / Accessories / Batteries",
"subcategory": "Pre-ordered Products",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/aade559114f69d499b31acbade32eddf.pdf",
"parts": {
"symbol": "a5947gettr-t.kicad_sym",
"footprint": "a5947gettr-t.kicad_mod",
"model_3d": "a5947gettr-t-hero.glb",
"model_3d_plain": "a5947gettr-t-etched.glb",
"model_3d_step": "a5947gettr-t-etched.step",
"model_3d_step_plain": "a5947gettr-t.step",
"lbr": "a5947gettr-t.lbr"
},
"distributor_links": {
"lcsc": "C2929893"
},
"distributor_check": {
"checked_at": "2026-10-22T23:02:22Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "deferred",
"error": "shared DigiKey quota guard: 711 calls left today"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "OUTA",
"type": "output",
"description": "Motor terminal A, with absolute maximum output voltage of VBB + 1 V."
},
{
"number": "2",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "3",
"name": "LSS",
"type": "passive",
"description": "Low side source connection."
},
{
"number": "4",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "5",
"name": "OUTB",
"type": "output",
"description": "Motor terminal B, with absolute maximum output voltage of VBB + 1 V."
},
{
"number": "6",
"name": "OUTC",
"type": "output",
"description": "Motor terminal C, with absolute maximum output voltage of VBB + 1 V."
},
{
"number": "7",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "8",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "9",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "10",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "11",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "12",
"name": "VREF",
"type": "power_out",
"description": "Reference voltage output of 3.3 V typical (3.15 to 3.45 V) for loads of 0 to 20 mA."
},
{
"number": "13",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "14",
"name": "TEST",
"type": "output",
"description": "Open-drain logic output that is low when the motor is off and high at the end of open loop startup."
},
{
"number": "15",
"name": "nFAULT",
"type": "output",
"description": "Active-low logic output that signals VBB undervoltage, VBB overvoltage, thermal shutdown, VCP undervoltage, rotor lock and output VDS (OCP) faults."
},
{
"number": "16",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "17",
"name": "SPD",
"type": "input",
"description": "Speed demand input (PWM duty or analog voltage), which also serves as the I2C clock line SCL; absolute maximum -0.3 to 6 V."
},
{
"number": "18",
"name": "FG",
"type": "bidirectional",
"description": "Open-drain speed output that also serves as the I2C data line SDA; absolute maximum -0.3 to 6 V."
},
{
"number": "19",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "20",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "21",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "22",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "23",
"name": "CP1",
"type": "passive",
"description": "Charge pump capacitor connection (0.1 µF X7R in the typical application)."
},
{
"number": "24",
"name": "CP2",
"type": "passive",
"description": "Charge pump capacitor connection."
},
{
"number": "25",
"name": "VCP",
"type": "passive",
"description": "Charge pump capacitor/output node, rated VBB - 0.3 to VBB + 8 V."
},
{
"number": "26",
"name": "VBB",
"type": "power_in",
"description": "Input supply, operating 4 to 40 V with absolute maximum of -0.7 to 40 V."
},
{
"number": "27",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "28",
"name": "n/c",
"type": "unconnected",
"description": "No connect."
},
{
"number": "29",
"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: The exposed pad has no number in the terminal table. '29' was inferred from the 29-pad land pattern ; The datasheet gives no electrical type for the motor outputs, LSS, CP1, CP2 or VCP. These types were",
"1/29 pins cited to the wrong page (name found elsewhere): ['29:PAD@p3']"
],
"pages_sent": 22,
"cost_usd": 0.0953,
"at": "2026-10-22T23:02:04"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/aade559114f69d499b31acbade32eddf.pdf",
"pages": 22,
"sha256": "b87bfe434c54d3c2",
"source_tier": "lcsc"
},
"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"
},
"models_3d": [
{
"file": "a5947gettr-t.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.92
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e9d6d740f505b03e5aa0ac826330f9e269344b84656d051f50eb07ac162749eb",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "a5947gettr-t-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.92
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "3d165bdbb84919263dd7401986474e425e3dc0ab5cc32e4b4aa6e3cad0e57cf2",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Allegro MicroSystems, LLC",
"Package": "QFN-28-EP(5x5)",
"Category": "Solders / Accessories / Batteries",
"Pins": "29"
},
"appearance": {
"contacts": {
"quote": "28-contact QFN (package ET), on 2-sided PCB 1-in.2 copper 40 °C/W",
"page": 2,
"doc": "ds.pdf",
"material": "copper"
},
"version": 1,
"datasheet_sha256": "b87bfe434c54d3c2bc951fb4dca45c47d16a532291b797fdbeaf3865eace3a05"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"a5947gettr-t"
],
"discovery_pitch": "A5947GETTR-T (Allegro MicroSystems, LLC) 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",
"a5947gettr-t.kicad_sym",
"a5947gettr-t.kicad_mod",
"a5947gettr-t.glb",
"a5947gettr-t.step",
"a5947gettr-t.lbr",
"docs/hero.png",
"docs/a5947gettr-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"a5947gettr-t-hero.glb",
"a5947gettr-t-hero.overlay.json",
"a5947gettr-t-etched.glb"
],
"visibility": {
"public": true
}
}