component
A5984GESTR-T
Public Made by Adomby adom
Allegro MicroSystems LLC Stepper Motor Driver, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800
{
"schema_version": 1,
"type": "component",
"slug": "a5984gestr-t",
"title": "A5984GESTR-T",
"brief": "Allegro MicroSystems LLC Stepper Motor Driver, QFN-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",
"motor driver ics",
"a5984gestr-t",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "A5984GESTR-T",
"manufacturer": "Allegro MicroSystems LLC",
"package": "QFN-24-EP(4x4)",
"pin_count": 25,
"category": "Motor Driver ICs",
"subcategory": "Stepper Motor Driver",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588953508599517184",
"parts": {
"symbol": "a5984gestr-t.kicad_sym",
"footprint": "a5984gestr-t.kicad_mod",
"model_3d": "a5984gestr-t-hero.glb",
"model_3d_plain": "a5984gestr-t-etched.glb",
"model_3d_step": "a5984gestr-t-etched.step",
"model_3d_step_plain": "a5984gestr-t.step",
"lbr": "a5984gestr-t.lbr"
},
"distributor_links": {
"lcsc": "C2653533",
"digikey": "620-1786-2-ND",
"mouser": "250-A5984GESTR-T"
},
"distributor_check": {
"checked_at": "2026-10-21T00:04:34Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "620-1786-2-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "250-A5984GESTR-T",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "OUT2B",
"type": "output",
"description": "DMOS full-bridge 2 output B; the output drive capacity of the device is up to 40 V and ±2 A."
},
{
"number": "2",
"name": "ENABLE",
"type": "input",
"description": "Logic input that disables all FET outputs when high and enables them as required when low, while STEP, DIR and MSx stay active regardless of its state."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground; the GND pins must be tied together externally by connecting to the PAD ground plane under the device."
},
{
"number": "4",
"name": "CP1",
"type": "passive",
"description": "Charge pump capacitor terminal; a 0.1 µF ceramic capacitor (Class 2, ±15% max) is connected between CP1 and CP2."
},
{
"number": "5",
"name": "CP2",
"type": "passive",
"description": "Charge pump capacitor terminal; a 0.1 µF ceramic capacitor (Class 2, ±15% max) is connected between CP1 and CP2."
},
{
"number": "6",
"name": "VCP",
"type": "passive",
"description": "Reservoir capacitor terminal; a 0.1 µF ceramic capacitor is required between VCP and VBB to act as a reservoir for the high-side FET gates."
},
{
"number": "7",
"name": "nFAULT",
"type": "output",
"description": "Open-drain fault output, active low; it is enabled when an overcurrent event disables the device and latches the outputs off."
},
{
"number": "8",
"name": "MS1",
"type": "input",
"description": "Logic input that sets the microstep resolution together with MS2 and MS3 per Table 1; it has an internal 100 kΩ pull-down and changes take effect at the next STEP rising edge."
},
{
"number": "9",
"name": "MS2",
"type": "input",
"description": "Logic input that sets the microstep resolution together with MS1 and MS3 per Table 1; it has an internal 100 kΩ pull-down and changes take effect at the next STEP rising edge."
},
{
"number": "10",
"name": "RESET",
"type": "input",
"description": "Logic input that sets the translator to the Home state and turns off all FET outputs when low; STEP inputs are ignored until RESET is high."
},
{
"number": "11",
"name": "ROSC",
"type": "passive",
"description": "Timing set pin: connecting to GND selects APFD with a 16 µs off-time, a resistor to GND sets off-time to ROSC/825 µs, and a pull-up above 3 V selects mixed decay with a 30 µs off-time."
},
{
"number": "12",
"name": "SLEEP",
"type": "input",
"description": "Logic input where a logic low puts the device into Sleep mode (current below 10 µA), and 1 ms must elapse after leaving Sleep before a STEP command."
},
{
"number": "13",
"name": "MS3",
"type": "input",
"description": "Logic input that sets the microstep resolution together with MS1 and MS2 per Table 1; it has an internal 100 kΩ pull-down and changes take effect at the next STEP rising edge."
},
{
"number": "14",
"name": "STEP",
"type": "input",
"description": "Logic input where each low-to-high transition advances the motor one microstep, with minimum HIGH and LOW pulse widths of 1 µs."
},
{
"number": "15",
"name": "REF",
"type": "input",
"description": "Gm reference voltage input with a 0 to 4 V range that sets the maximum current ITripMAX = VREF/(8 × RS)."
},
{
"number": "16",
"name": "GND",
"type": "power_in",
"description": "Ground; the GND pins must be tied together externally by connecting to the PAD ground plane under the device."
},
{
"number": "17",
"name": "DIR",
"type": "input",
"description": "Logic input that sets the direction of motor rotation; changes take effect at the next STEP input rising edge."
},
{
"number": "18",
"name": "OUT1B",
"type": "output",
"description": "DMOS full-bridge 1 output B; the output drive capacity of the device is up to 40 V and ±2 A."
},
{
"number": "19",
"name": "VBB1",
"type": "power_in",
"description": "Load supply with an operating range of 8 to 40 V."
},
{
"number": "20",
"name": "SENSE1",
"type": "passive",
"description": "Sense resistor terminal for bridge 1; the SENSE1 pin must not exceed its rated -0.5 to 0.5 V."
},
{
"number": "21",
"name": "OUT1A",
"type": "output",
"description": "DMOS full-bridge 1 output A; the output drive capacity of the device is up to 40 V and ±2 A."
},
{
"number": "22",
"name": "OUT2A",
"type": "output",
"description": "DMOS full-bridge 2 output A; the output drive capacity of the device is up to 40 V and ±2 A."
},
{
"number": "23",
"name": "SENSE2",
"type": "passive",
"description": "Sense resistor terminal for bridge 2; the SENSE2 pin must not exceed its rated -0.5 to 0.5 V."
},
{
"number": "24",
"name": "VBB2",
"type": "power_in",
"description": "Load supply with an operating range of 8 to 40 V."
},
{
"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 exposed pad is not given a numeric or ball number in the datasheet terminal list; it is included; The datasheet describes nFAULT as an open-drain fault output; it is typed output here because the ER; The datasheet does not assign electrical types to these pins; passive was chosen based on their desc"
],
"pages_sent": 28,
"cost_usd": 0.1083,
"at": "2026-10-20T23:59:39"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588953508599517184",
"pages": 28,
"sha256": "e934c6cbe1bf6530",
"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": "a5984gestr-t.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": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "a5984gestr-t-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": "fdc737610bf0ed4bea7fa8e4773660c90c10e6e4e2bb21e26cf6905b0b986833",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Allegro MicroSystems LLC",
"Package": "QFN-24-EP(4x4)",
"Category": "Motor Driver ICs",
"Pins": "25"
},
"appearance": {
"contacts": {
"quote": "for enhanced thermal dissipation and are lead (Pb) free (suffix –T), with 100% matte-tin-plated leadframes.",
"page": 2,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
"datasheet_sha256": "e934c6cbe1bf6530ad2e6792a539bdd105f98e1010fffdd356c0f898965f8b5f"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e934c6cbe1bf6530ad2e6792a539bdd105f98e1010fffdd356c0f898965f8b5f",
"rows": [
{
"name": "Load Supply Voltage Range",
"symbol": "VBB",
"kind": "recommended_operating",
"unit": "V",
"min": 8,
"typ": null,
"max": 40,
"conditions": "Operating",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Load Supply Voltage Range",
"symbol": "VBB",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 40,
"conditions": "During Sleep Mode",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Output On Resistance",
"symbol": "RDS(on)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 640,
"max": 860,
"conditions": "Source + Sink Driver, IOUT = –2 A, TA = 25°C",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Body Diode Forward Voltage (source diode)",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.4,
"conditions": "Source Diode, IF = –2 A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Body Diode Forward Voltage (sink diode)",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.4,
"conditions": "Sink Diode, IF = 2 A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Output Driver Slew Rate",
"symbol": "SROUT",
"kind": "timing",
"unit": "ns",
"min": 50,
"typ": 100,
"max": 150,
"conditions": "10% to 90%",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Motor Supply Current",
"symbol": "IBB",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 7.5,
"max": 10,
"conditions": "fPWM < 50 kHz",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Motor Supply Current",
"symbol": "IBB",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 6.5,
"max": 8,
"conditions": "Operating, outputs disabled",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Motor Supply Current (Sleep Mode)",
"symbol": "IBB",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 10,
"conditions": "Sleep Mode",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Voltage (high)",
"symbol": "VIN(1)",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Voltage (low)",
"symbol": "VIN(0)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Voltage (sleep)",
"symbol": "VIN(SLEEP)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Current (high)",
"symbol": "IIN(1)",
"kind": "electrical",
"unit": "µA",
"min": -20,
"typ": null,
"max": 20,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Current (low)",
"symbol": "IIN(0)",
"kind": "electrical",
"unit": "µA",
"min": -20,
"typ": null,
"max": 20,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic Input Hysteresis",
"symbol": "VHYS(IN)",
"kind": "electrical",
"unit": "mV",
"min": 200,
"typ": null,
"max": 550,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Blank Time",
"symbol": "tBLANK",
"kind": "timing",
"unit": "µs",
"min": 0.7,
"typ": 1,
"max": 1.3,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Fixed Off-Time",
"symbol": "tOFF",
"kind": "timing",
"unit": "µs",
"min": 20,
"typ": 30,
"max": 40,
"conditions": "ROSC = 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Fixed Off-Time",
"symbol": "tOFF",
"kind": "timing",
"unit": "µs",
"min": 13,
"typ": 16,
"max": 19,
"conditions": "ROSC = GND",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Fixed Off-Time",
"symbol": "tOFF",
"kind": "timing",
"unit": "µs",
"min": 23,
"typ": 30,
"max": 37,
"conditions": "ROSC = 25 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Reference Input Voltage Range",
"symbol": "VREF",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 4,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Reference Input Current",
"symbol": "IREF",
"kind": "electrical",
"unit": "µA",
"min": -3,
"typ": 0,
"max": 3,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Trip-Level Error",
"symbol": "errI",
"kind": "tolerance",
"unit": "%",
"min": -15,
"typ": null,
"max": 15,
"conditions": "VREF = 2 V, %ITripMAX = 38.27%",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current Trip-Level Error",
"symbol": "errI",
"kind": "tolerance",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "VREF = 2 V, %ITripMAX = 70.71%",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Crossover Dead Time",
"symbol": "tDT",
"kind": "timing",
"unit": "ns",
"min": 100,
"typ": 475,
"max": 800,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Fault Output Voltage",
"symbol": "VRST",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "nFAULT pin, IOUT = 1 mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Fault Output Leakage Current",
"symbol": "ILK",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "nFAULT pin, no fault, pull-up to 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Overcurrent Protection Threshold",
"symbol": "IOCPST",
"kind": "electrical",
"unit": "A",
"min": 2.6,
"typ": null,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VBB UVLO Threshold",
"symbol": "VBBUVLO",
"kind": "electrical",
"unit": "V",
"min": 6.3,
"typ": null,
"max": 6.85,
"conditions": "VBB rising",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Load Supply Voltage (absolute maximum)",
"symbol": "VBB",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output Current",
"symbol": "IOUT",
"kind": "absolute_maximum",
"unit": "A",
"min": -2,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Logic Input Voltage (absolute maximum)",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Motor Outputs Voltage",
"symbol": "V",
"kind": "absolute_maximum",
"unit": "V",
"min": -2,
"typ": null,
"max": null,
"conditions": "Maximum printed as VBB + 2 V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Sense Voltage",
"symbol": "VSENSE",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": 0.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reference Voltage",
"symbol": "VREF",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Ambient Temperature (Range G)",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 105,
"conditions": "Range G",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Junction Temperature",
"symbol": "TJ(max)",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Package Thermal Resistance (ES package)",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 37,
"max": null,
"conditions": "ES package; estimated, on 4-layer PCB, based on JEDEC standard; still air",
"source_page": 7,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"a5984gestr-t"
],
"discovery_pitch": "A5984GESTR-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",
"a5984gestr-t.kicad_sym",
"a5984gestr-t.kicad_mod",
"a5984gestr-t.glb",
"a5984gestr-t.step",
"a5984gestr-t.lbr",
"docs/hero.png",
"docs/a5984gestr-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"a5984gestr-t-hero.glb",
"a5984gestr-t-hero.overlay.json",
"a5984gestr-t-etched.glb"
],
"visibility": {
"public": true
}
}