A3988SEVTR-T

{
  "schema_version": 1,
  "type": "component",
  "slug": "a3988sevtr-t",
  "title": "A3988SEVTR-T",
  "brief": "Allegro MicroSystems, LLC Motor Driver ICs, QFN-36-EP(6x6). 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",
    "power management ics",
    "a3988sevtr-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "A3988SEVTR-T",
    "manufacturer": "Allegro MicroSystems, LLC",
    "package": "QFN-36-EP(6x6)",
    "pin_count": 37,
    "category": "Power Management ICs",
    "subcategory": "Motor Driver ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/03d2c4cc182247158fe9dd2903120c7b.pdf",
    "parts": {
      "symbol": "a3988sevtr-t.kicad_sym",
      "footprint": "a3988sevtr-t.kicad_mod",
      "model_3d": "a3988sevtr-t-hero.glb",
      "model_3d_plain": "a3988sevtr-t-etched.glb",
      "model_3d_step": "a3988sevtr-t-etched.step",
      "model_3d_step_plain": "a3988sevtr-t.step",
      "lbr": "a3988sevtr-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C163256",
      "digikey": "620-1176-2-ND",
      "mouser": "250-A3988SEVTR-T"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T09:06:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "620-1176-2-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
      },
      "mouser": {
        "pn": "250-A3988SEVTR-T",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "I04",
        "type": "input",
        "description": "Control input I0 for bridge 4, setting the current level with I14; logic levels are 0.7×VDD min high and 0.3×VDD max low."
      },
      {
        "number": "2",
        "name": "OUT1A",
        "type": "output",
        "description": "DMOS full-bridge 1 output A, rated up to 1.2 A and 36 V."
      },
      {
        "number": "3",
        "name": "SENSE1",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 1; voltage must not exceed ±500 mV."
      },
      {
        "number": "4",
        "name": "OUT1B",
        "type": "output",
        "description": "DMOS full-bridge 1 output B, rated up to 1.2 A and 36 V."
      },
      {
        "number": "5",
        "name": "VBB1",
        "type": "power_in",
        "description": "Load supply voltage, 8.0 to 36 V operating; must be connected together with VBB2 close to the device."
      },
      {
        "number": "6",
        "name": "OUT2B",
        "type": "output",
        "description": "DMOS full-bridge 2 output B, rated up to 1.2 A and 36 V."
      },
      {
        "number": "7",
        "name": "SENSE2",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 2; voltage must not exceed ±500 mV."
      },
      {
        "number": "8",
        "name": "OUT2A",
        "type": "output",
        "description": "DMOS full-bridge 2 output A, rated up to 1.2 A and 36 V."
      },
      {
        "number": "9",
        "name": "PHASE4",
        "type": "input",
        "description": "Control input setting the current direction of bridge 4."
      },
      {
        "number": "10",
        "name": "PHASE3",
        "type": "input",
        "description": "Control input setting the current direction of bridge 3."
      },
      {
        "number": "11",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply voltage, 3.0 to 5.5 V operating."
      },
      {
        "number": "12",
        "name": "VREF1",
        "type": "input",
        "description": "Analog reference input for bridge 1, 0.0 to 1.5 V operating, setting ITripMax = VREF/(3×RS)."
      },
      {
        "number": "13",
        "name": "VREF2",
        "type": "input",
        "description": "Analog reference input for bridge 2, 0.0 to 1.5 V operating, setting ITripMax = VREF/(3×RS)."
      },
      {
        "number": "14",
        "name": "VREF3",
        "type": "input",
        "description": "Analog reference input for bridge 3, 0.0 to 1.5 V operating, setting ITripMax = VREF/(3×RS)."
      },
      {
        "number": "15",
        "name": "VREF4",
        "type": "input",
        "description": "Analog reference input for bridge 4, 0.0 to 1.5 V operating, setting ITripMax = VREF/(3×RS)."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "17",
        "name": "PHASE2",
        "type": "input",
        "description": "Control input setting the current direction of bridge 2."
      },
      {
        "number": "18",
        "name": "PHASE1",
        "type": "input",
        "description": "Control input setting the current direction of bridge 1."
      },
      {
        "number": "19",
        "name": "I14",
        "type": "input",
        "description": "Control input I1 for bridge 4, setting the current level with I04."
      },
      {
        "number": "20",
        "name": "OUT4A",
        "type": "output",
        "description": "DMOS full-bridge 4 output A, rated up to 1.2 A and 36 V."
      },
      {
        "number": "21",
        "name": "SENSE4",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 4; voltage must not exceed ±500 mV."
      },
      {
        "number": "22",
        "name": "OUT4B",
        "type": "output",
        "description": "DMOS full-bridge 4 output B, rated up to 1.2 A and 36 V."
      },
      {
        "number": "23",
        "name": "VBB2",
        "type": "power_in",
        "description": "Load supply voltage, 8.0 to 36 V operating; must be connected together with VBB1 close to the device."
      },
      {
        "number": "24",
        "name": "OUT3B",
        "type": "output",
        "description": "DMOS full-bridge 3 output B, rated up to 1.2 A and 36 V."
      },
      {
        "number": "25",
        "name": "SENSE3",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 3; voltage must not exceed ±500 mV."
      },
      {
        "number": "26",
        "name": "OUT3A",
        "type": "output",
        "description": "DMOS full-bridge 3 output A, rated up to 1.2 A and 36 V."
      },
      {
        "number": "27",
        "name": "I13",
        "type": "input",
        "description": "Control input I1 for bridge 3, setting the current level with I03."
      },
      {
        "number": "28",
        "name": "I12",
        "type": "input",
        "description": "Control input I1 for bridge 2, setting the current level with I02."
      },
      {
        "number": "29",
        "name": "I11",
        "type": "input",
        "description": "Control input I1 for bridge 1, setting the current level with I01."
      },
      {
        "number": "30",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "31",
        "name": "VCP",
        "type": "passive",
        "description": "Reservoir capacitor terminal; a 0.1 µF ceramic capacitor is required between VCP and VBBx."
      },
      {
        "number": "32",
        "name": "CP1",
        "type": "passive",
        "description": "Charge pump capacitor terminal; a 0.1 µF ceramic capacitor is connected between CP1 and CP2."
      },
      {
        "number": "33",
        "name": "CP2",
        "type": "passive",
        "description": "Charge pump capacitor terminal; a 0.1 µF ceramic capacitor is connected between CP1 and CP2."
      },
      {
        "number": "34",
        "name": "I01",
        "type": "input",
        "description": "Control input I0 for bridge 1, setting the current level with I11."
      },
      {
        "number": "35",
        "name": "I02",
        "type": "input",
        "description": "Control input I0 for bridge 2, setting the current level with I12."
      },
      {
        "number": "36",
        "name": "I03",
        "type": "input",
        "description": "Control input I0 for bridge 3, setting the current level with I13."
      },
      {
        "number": "37",
        "name": "PAD",
        "type": "passive",
        "description": "Exposed pad for enhanced thermal performance; should be soldered to the PCB."
      }
    ],
    "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 datasheet does not state that the exposed PAD is electrically ground. The layout section only de; Pin-type choices for SENSEx (passive), VCP, CP1 and CP2 (passive) are inferred from their function d"
        ],
        "pages_sent": 14,
        "cost_usd": 0.1612,
        "at": "2026-10-31T09:05:59"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/03d2c4cc182247158fe9dd2903120c7b.pdf",
        "pages": 14,
        "sha256": "d98c46bb6e4ac606",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 37,
        "described": 37,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "a3988sevtr-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          6,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6212c4fd2463ccb7c6ae2c35f5e24c80884153fcaeaf8e86549c0e49087bc8bb",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "a3988sevtr-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          6,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "89865514c9eadcb26cbafa27371e79091f0364a221ee7c4f9acd5efb2db58bbe",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "EV",
      "source_page": 12,
      "D": {
        "nom_mm": 6,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 6,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.9,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "a3988sevtr-t.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Allegro MicroSystems, LLC",
      "Package": "QFN-36-EP(6x6)",
      "Category": "Power Management ICs",
      "Pins": "37"
    },
    "appearance": {
      "contacts": {
        "quote": "package height of 0.90 mm. The JP is a 7 mm × 7 mm 48 pin LQFP. Both packages are lead (Pb) free, with 100% matte tin",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "d98c46bb6e4ac606d77727f69a1675704f93a41f94044d97db40c2a3e530c9bb"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d98c46bb6e4ac606d77727f69a1675704f93a41f94044d97db40c2a3e530c9bb",
      "rows": [
        {
          "name": "Load Supply Voltage Range",
          "symbol": "VBB",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 36,
          "conditions": "Operating",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Voltage Range",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "Operating",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 7,
          "max": 10,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output On Resistance, Source driver",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 700,
          "max": 800,
          "conditions": "IOUT = –1.2 A, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output On Resistance, Sink driver",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 700,
          "max": 800,
          "conditions": "IOUT = 1.2 A, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Vf, Outputs",
          "symbol": "Vf",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "IOUT = 1.2 A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "Outputs, VOUT = 0 to VBB",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VBB Supply Current",
          "symbol": "IBB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "IOUT = 0 mA, outputs on, PWM = 50 kHz, DC = 50%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Voltage high",
          "symbol": "VIN(1)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "0.7×VDD (min printed as 0.7×VDD)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Voltage low",
          "symbol": "VIN(0)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "0.3×VDD (max printed as 0.3×VDD)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": 1,
          "max": 20,
          "conditions": "VIN = 0 to 5 V; typ printed <1.0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Hysteresis",
          "symbol": "Vhys",
          "kind": "electrical",
          "unit": "mV",
          "min": 150,
          "typ": 300,
          "max": 500,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay, PWM change to source on",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 350,
          "typ": 550,
          "max": 1000,
          "conditions": "PWM change to source on",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay, PWM change to source off",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 35,
          "typ": null,
          "max": 300,
          "conditions": "PWM change to source off",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay, PWM change to sink on",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 350,
          "typ": 550,
          "max": 1000,
          "conditions": "PWM change to sink on",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay, PWM change to sink off",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 35,
          "typ": null,
          "max": 250,
          "conditions": "PWM change to sink off",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Crossover Delay",
          "symbol": "tCOD",
          "kind": "timing",
          "unit": "ns",
          "min": 300,
          "typ": 425,
          "max": 1000,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Blank Time",
          "symbol": "tBLANK",
          "kind": "timing",
          "unit": "µs",
          "min": 0.7,
          "typ": 1,
          "max": 1.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VREFx Pin Input Voltage Range",
          "symbol": "VREFx",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 1.5,
          "conditions": "Operating",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VREFx Pin Reference Input Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VREF = 1.5; printed ±1",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error, 100%",
          "symbol": "VERR",
          "kind": "electrical",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VREF = 1.5, phase current = 100%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error, 67%",
          "symbol": "VERR",
          "kind": "electrical",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VREF = 1.5, phase current = 67%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error, 33%",
          "symbol": "VERR",
          "kind": "electrical",
          "unit": "%",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "VREF = 1.5, phase current = 33%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VBB UVLO Threshold",
          "symbol": "VUV(VBB)",
          "kind": "electrical",
          "unit": "V",
          "min": 7.3,
          "typ": 7.6,
          "max": 7.9,
          "conditions": "VBB rising",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VBB Hysteresis",
          "symbol": "VUV(VBB)hys",
          "kind": "electrical",
          "unit": "mV",
          "min": 400,
          "typ": 500,
          "max": 600,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD UVLO Threshold",
          "symbol": "VUV(VDD)",
          "kind": "electrical",
          "unit": "V",
          "min": 2.65,
          "typ": 2.8,
          "max": 2.95,
          "conditions": "VDD rising",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD Hysteresis",
          "symbol": "VUV(VDD)hys",
          "kind": "electrical",
          "unit": "mV",
          "min": 75,
          "typ": 105,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TJTSD",
          "kind": "electrical",
          "unit": "°C",
          "min": 155,
          "typ": 165,
          "max": 175,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Hysteresis",
          "symbol": "TJTSDhys",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Supply Voltage",
          "symbol": "VBB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Supply Voltage, pulsed",
          "symbol": "VBB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 38,
          "conditions": "Pulsed tw < 1 µs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
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