A4986SESTR-T

{
  "schema_version": 1,
  "type": "component",
  "slug": "a4986sestr-t",
  "title": "A4986SESTR-T",
  "brief": "Allegro MicroSystems, LLC New Arrivals, QFN-24(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",
    "others",
    "a4986sestr-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "A4986SESTR-T",
    "manufacturer": "Allegro MicroSystems, LLC",
    "package": "QFN-24(4x4)",
    "pin_count": 25,
    "category": "Others",
    "subcategory": "New Arrivals",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/65afd0126d61623159880bd010d17843.pdf",
    "parts": {
      "symbol": "a4986sestr-t.kicad_sym",
      "footprint": "a4986sestr-t.kicad_mod",
      "model_3d": "a4986sestr-t-hero.glb",
      "model_3d_plain": "a4986sestr-t-etched.glb",
      "model_3d_step": "a4986sestr-t-etched.step",
      "model_3d_step_plain": "a4986sestr-t.step",
      "lbr": "a4986sestr-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C7208645",
      "digikey": "620-A4986SESTR-TTR-ND",
      "mouser": "250-A4986SESTR-T"
    },
    "distributor_check": {
      "checked_at": "2026-11-02T19:37:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "620-A4986SESTR-TTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "250-A4986SESTR-T",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT2B",
        "type": "output",
        "description": "DMOS full-bridge 2 output B, rated up to 35 V and ±2 A."
      },
      {
        "number": "2",
        "name": "PH2",
        "type": "input",
        "description": "Logic input setting the phase (current direction) of bridge 2, with logic levels of VDD×0.7 high and VDD×0.3 low."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; must be tied together externally with the other GND pin by connecting to the PAD ground plane under the device."
      },
      {
        "number": "4",
        "name": "CP1",
        "type": "passive",
        "description": "Charge pump capacitor terminal; connect a 0.1 µF ceramic capacitor between CP1 and CP2."
      },
      {
        "number": "5",
        "name": "CP2",
        "type": "passive",
        "description": "Charge pump capacitor terminal; connect a 0.1 µF ceramic capacitor 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 for the high-side FET gate supply."
      },
      {
        "number": "7",
        "name": "VREG",
        "type": "power_out",
        "description": "Regulator decoupling terminal with nominal 7 V output; must be decoupled with a 0.22 µF ceramic capacitor to ground."
      },
      {
        "number": "8",
        "name": "IN02",
        "type": "input",
        "description": "Logic input bit 0 of the bridge 2 current DAC, with an internal pull-down of typically 100 kΩ."
      },
      {
        "number": "9",
        "name": "IN12",
        "type": "input",
        "description": "Logic input bit 1 of the bridge 2 current DAC, with an internal pull-down of typically 50 kΩ."
      },
      {
        "number": "10",
        "name": "IN11",
        "type": "input",
        "description": "Logic input bit 1 of the bridge 1 current DAC (2-bit DAC selects 33%, 66%, 100% of peak current or output disable)."
      },
      {
        "number": "11",
        "name": "ROSC",
        "type": "input",
        "description": "Timing set for fixed off-time: tie to VDD or ground for 30 µs, or connect a resistor to ground for tOFF ≈ ROSC/825 (µs)."
      },
      {
        "number": "12",
        "name": "SLEEP",
        "type": "input",
        "description": "Active-low logic input; a logic low puts the device into Sleep mode (< 10 µA), and a 1 ms delay is needed after wake-up before issuing commands."
      },
      {
        "number": "13",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply, operating range 3.0 to 5.5 V."
      },
      {
        "number": "14",
        "name": "IN01",
        "type": "input",
        "description": "Logic input bit 0 of the bridge 1 current DAC."
      },
      {
        "number": "15",
        "name": "REF",
        "type": "input",
        "description": "Gm reference voltage input (VREF 0 to 4 V) setting ITripMAX = VREF/(8×RS)."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; must be tied together externally with the other GND pin by connecting to the PAD ground plane under the device."
      },
      {
        "number": "17",
        "name": "PH1",
        "type": "input",
        "description": "Logic input setting the phase (current direction) of bridge 1."
      },
      {
        "number": "18",
        "name": "OUT1B",
        "type": "output",
        "description": "DMOS full-bridge 1 output B, rated up to 35 V and ±2 A."
      },
      {
        "number": "19",
        "name": "VBB1",
        "type": "power_in",
        "description": "Load supply for bridge 1, operating range 8 to 35 V."
      },
      {
        "number": "20",
        "name": "SENSE1",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 1; voltage must not exceed the ±0.5 V maximum rating."
      },
      {
        "number": "21",
        "name": "OUT1A",
        "type": "output",
        "description": "DMOS full-bridge 1 output A, rated up to 35 V and ±2 A."
      },
      {
        "number": "22",
        "name": "OUT2A",
        "type": "output",
        "description": "DMOS full-bridge 2 output A, rated up to 35 V and ±2 A."
      },
      {
        "number": "23",
        "name": "SENSE2",
        "type": "passive",
        "description": "Sense resistor terminal for bridge 2; voltage must not exceed the ±0.5 V maximum rating."
      },
      {
        "number": "24",
        "name": "VBB2",
        "type": "power_in",
        "description": "Load supply for bridge 2, operating range 8 to 35 V."
      },
      {
        "number": "25",
        "name": "PAD",
        "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-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The exposed pad is labelled only 'PAD' in the terminal table with no pin number; the package drawing; The datasheet does not give electrical pin types. Types were inferred from the descriptions (outputs",
          "exposed pad 25 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 17,
        "cost_usd": 0.2356,
        "at": "2026-11-02T19:37:03"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/65afd0126d61623159880bd010d17843.pdf",
        "pages": 17,
        "sha256": "ff5b906680415f46",
        "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": [
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        "file": "a4986sestr-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-11-02",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "a4986sestr-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "sha256": "f3e422d25b62a5f94d2e8ed626877bc45ac271fa73c2f31e53b5a071421d5fc2",
        "checked": "2026-11-02",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Allegro MicroSystems, LLC",
      "Package": "QFN-24(4x4)",
      "Category": "Others",
      "Pins": "25"
    },
    "appearance": {
      "contacts": {
        "quote": "thermal dissipation and are lead (Pb) free (suffix –T), with 100% matte tin plated leadframes.",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "ff5b906680415f461741625df335d95b6f410b7ba703cf2859d41953aa5f4c47"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ff5b906680415f461741625df335d95b6f410b7ba703cf2859d41953aa5f4c47",
      "rows": [
        {
          "name": "Load Supply Voltage",
          "symbol": "VBB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "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,
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        },
        {
          "name": "Logic Input Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "Motor Outputs Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2,
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        {
          "name": "Sense Voltage",
          "symbol": "VSENSE",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "",
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          "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",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 85,
          "conditions": "Range S",
          "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": "Load Supply Voltage Range, operating",
          "symbol": "VBB",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 35,
          "conditions": "Operating",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Supply Voltage Range, sleep",
          "symbol": "VBB",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 35,
          "conditions": "During Sleep Mode",
          "source_page": 4,
          "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": 4,
          "source": "datasheet"
        },
        {
          "name": "Source Output On Resistance",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 320,
          "max": 430,
          "conditions": "Source Driver, IOUT = –1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sink Output On Resistance",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 320,
          "max": 430,
          "conditions": "Sink Driver, IOUT = 1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Source Diode Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "Source Diode, IF = –1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sink Diode Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "Sink Diode, IF = 1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Motor Supply Current",
          "symbol": "IBB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "fPWM < 50 kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Motor Supply Current, outputs disabled",
          "symbol": "IBB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Operating, outputs disabled",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Motor Supply Current, sleep",
          "symbol": "IBB",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Sleep Mode",
          "source_page": 4,
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        },
        {
          "name": "Logic Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "fPWM < 50 kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Current, outputs off",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Outputs off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Current, sleep",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Sleep Mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Voltage high",
          "symbol": "VIN(1)",
          "kind": "electrical",
          "unit": "x VDD",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "printed as VDD × 0.7",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Voltage low",
          "symbol": "VIN(0)",
          "kind": "electrical",
          "unit": "x VDD",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "printed as VDD × 0.3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Current high",
          "symbol": "IIN(1)",
          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": 1,
          "max": 20,
          "conditions": "VIN = VDD × 0.7; typ printed <1.0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Current low",
          "symbol": "IIN(0)",
          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": 1,
          "max": 20,
          "conditions": "VIN = VDD × 0.3; typ printed <1.0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Pull-down IN02",
          "symbol": "RIN02",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Pull-down IN12",
          "symbol": "RIN12",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Input Hysteresis",
          "symbol": "VHYS(IN)",
          "kind": "electrical",
          "unit": "%",
          "min": 5,
          "typ": 11,
          "max": 19,
          "conditions": "As a % of VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Blank Time",
          "symbol": "tBLANK",
          "kind": "timing",
          "unit": "μs",
          "min": 0.7,
          "typ": 1,
          "max": 1.3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Fixed Off-Time, OSC tied",
          "symbol": "tOFF",
          "kind": "timing",
          "unit": "μs",
          "min": 20,
          "typ": 30,
          "max": 40,
          "conditions": "OSC = VDD or GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Fixed Off-Time, ROSC",
          "symbol": "tOFF",
          "kind": "timing",
          "unit": "μs",
          "min": 23,
          "typ": 30,
          "max": 37,
          "conditions": "ROSC = 25 kΩ",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Voltage Range",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "μA",
          "min": -3,
          "typ": 0,
          "max": 3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error 33.3%",
          "symbol": "errI",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "VREF = 2 V, %ITripMAX = 33.3%; printed ±15",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error 66.7%",
          "symbol": "errI",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VREF = 2 V, %ITripMAX = 66.7%; printed ±5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Trip-Level Error 100%",
          "symbol": "errI",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VREF = 2 V, %ITripMAX = 100.00%; printed ±5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Crossover Dead Time",
          "symbol": "tDT",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": 475,
          "max": 800,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overcurrent Protection Threshold",
          "symbol": "IOCPST",
          "kind": "electrical",
          "unit": "A",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TTSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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