AMT49100KJPTR-B-3

{
  "slug": "amt49100kjptr-b-3",
  "version": "0.1.0",
  "type": "component",
  "description": "Allegro MicroSystems, LLC Gate Drivers, LQFP-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "motor driver ics",
    "amt49100kjptr-b-3",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
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  "component": {
    "mpn": "AMT49100KJPTR-B-3",
    "manufacturer": "Allegro MicroSystems, LLC",
    "package": "LQFP-48-EP(7x7)",
    "pin_count": 49,
    "category": "Motor Driver ICs",
    "subcategory": "Gate Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3b2d3a14a0fda25c3d654de945876595.pdf",
    "parts": {
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    "distributor_links": {
      "lcsc": "C19762009",
      "digikey": "620-AMT49100KJPTR-B-3-ND",
      "mouser": "250-AMT49100KJPTRB3"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T02:24:23Z",
      "source": "Component Ocean /api/assign-pns",
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        "pn": "620-AMT49100KJPTR-B-3-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
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    "pins": [
      {
        "number": "1",
        "name": "LA",
        "type": "input",
        "description": "Logic input controlling the phase A low-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "2",
        "name": "HB",
        "type": "input",
        "description": "Logic input controlling the phase B high-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "3",
        "name": "LB",
        "type": "input",
        "description": "Logic input controlling the phase B low-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "4",
        "name": "HC",
        "type": "input",
        "description": "Logic input controlling the phase C high-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "5",
        "name": "LC",
        "type": "input",
        "description": "Logic input controlling the phase C low-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "6",
        "name": "DIAG",
        "type": "output",
        "description": "Programmable diagnostic output providing fault flag (default), pulsed fault flag, temperature, or internal timer; rated -0.3 to 80 V."
      },
      {
        "number": "7",
        "name": "SAL",
        "type": "output",
        "description": "Logic-level output showing the phase A state from a programmable threshold comparator."
      },
      {
        "number": "8",
        "name": "SBL",
        "type": "output",
        "description": "Logic-level output showing the phase B state from a programmable threshold comparator."
      },
      {
        "number": "9",
        "name": "SCL",
        "type": "output",
        "description": "Logic-level output showing the phase C state from a programmable threshold comparator."
      },
      {
        "number": "10",
        "name": "SDO",
        "type": "tri_state",
        "description": "Serial data output, high impedance when STRn is high, outputs the status register fault flag (bit 15) as soon as STRn goes low."
      },
      {
        "number": "11",
        "name": "SDI",
        "type": "input",
        "description": "Serial data logic input with pull-down, 16-bit word MSB first."
      },
      {
        "number": "12",
        "name": "SCK",
        "type": "input",
        "description": "Serial clock logic input with pull-down, data latched on rising edge, 16 rising edges per write, must be held high when STRn changes."
      },
      {
        "number": "13",
        "name": "STRn",
        "type": "input",
        "description": "Serial strobe (chip select) input with pull-up; when high, SCK and SDI activity is ignored and SDO is high impedance."
      },
      {
        "number": "14",
        "name": "CS1P",
        "type": "input",
        "description": "Current sense amplifier 1 positive input, rated -4 to 6.5 V."
      },
      {
        "number": "15",
        "name": "CS1M",
        "type": "input",
        "description": "Current sense amplifier 1 negative input, rated -4 to 6.5 V."
      },
      {
        "number": "16",
        "name": "CS1O",
        "type": "output",
        "description": "Current sense amplifier 1 output, rated -0.3 to 6 V."
      },
      {
        "number": "17",
        "name": "CS2P",
        "type": "input",
        "description": "Current sense amplifier 2 positive input, rated -4 to 6.5 V."
      },
      {
        "number": "18",
        "name": "CS2M",
        "type": "input",
        "description": "Current sense amplifier 2 negative input, rated -4 to 6.5 V."
      },
      {
        "number": "19",
        "name": "CS2O",
        "type": "output",
        "description": "Current sense amplifier 2 output, rated -0.3 to 6 V."
      },
      {
        "number": "20",
        "name": "CS3P",
        "type": "input",
        "description": "Current sense amplifier 3 positive input, rated -4 to 6.5 V."
      },
      {
        "number": "21",
        "name": "CS3M",
        "type": "input",
        "description": "Current sense amplifier 3 negative input, rated -4 to 6.5 V."
      },
      {
        "number": "22",
        "name": "CS3O",
        "type": "output",
        "description": "Current sense amplifier 3 output, rated -0.3 to 6 V."
      },
      {
        "number": "23",
        "name": "LSSC",
        "type": "passive",
        "description": "Low-side source return for phase C, connected to the low-side MOSFET source through a low-impedance track for gate discharge."
      },
      {
        "number": "24",
        "name": "GLC",
        "type": "output",
        "description": "Low-side gate drive output for the phase C external N-channel MOSFET."
      },
      {
        "number": "25",
        "name": "CC",
        "type": "passive",
        "description": "Phase C bootstrap capacitor high-side connection and positive supply for the high-side gate driver."
      },
      {
        "number": "26",
        "name": "SC",
        "type": "passive",
        "description": "Phase C load connection sensing switched load voltage, negative side of the bootstrap capacitor and floating high-side driver supply return."
      },
      {
        "number": "27",
        "name": "GHC",
        "type": "output",
        "description": "High-side gate drive output for the phase C external N-channel MOSFET."
      },
      {
        "number": "28",
        "name": "LSSB",
        "type": "passive",
        "description": "Low-side source return for phase B, connected to the low-side MOSFET source through a low-impedance track for gate discharge."
      },
      {
        "number": "29",
        "name": "GLB",
        "type": "output",
        "description": "Low-side gate drive output for the phase B external N-channel MOSFET."
      },
      {
        "number": "30",
        "name": "CB",
        "type": "passive",
        "description": "Phase B bootstrap capacitor high-side connection and positive supply for the high-side gate driver."
      },
      {
        "number": "31",
        "name": "SB",
        "type": "passive",
        "description": "Phase B load connection sensing switched load voltage, negative side of the bootstrap capacitor and floating high-side driver supply return."
      },
      {
        "number": "32",
        "name": "GHB",
        "type": "output",
        "description": "High-side gate drive output for the phase B external N-channel MOSFET."
      },
      {
        "number": "33",
        "name": "LSSA",
        "type": "passive",
        "description": "Low-side source return for phase A, connected to the low-side MOSFET source through a low-impedance track for gate discharge."
      },
      {
        "number": "34",
        "name": "GLA",
        "type": "output",
        "description": "Low-side gate drive output for the phase A external N-channel MOSFET."
      },
      {
        "number": "35",
        "name": "CA",
        "type": "passive",
        "description": "Phase A bootstrap capacitor high-side connection and positive supply for the high-side gate driver."
      },
      {
        "number": "36",
        "name": "SA",
        "type": "passive",
        "description": "Phase A load connection sensing switched load voltage, negative side of the bootstrap capacitor and floating high-side driver supply return."
      },
      {
        "number": "37",
        "name": "GHA",
        "type": "output",
        "description": "High-side gate drive output for the phase A external N-channel MOSFET."
      },
      {
        "number": "38",
        "name": "VREG",
        "type": "power_out",
        "description": "Regulated gate drive supply, nominally 12 V, from the buck regulator or an external supply, requires at least 10 µF ceramic capacitor."
      },
      {
        "number": "39",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; both GND terminals must be connected together at the device."
      },
      {
        "number": "40",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; both GND terminals must be connected together at the device."
      },
      {
        "number": "41",
        "name": "CP2",
        "type": "passive",
        "description": "Charge pump capacitor terminal, connect at least 1 µF ceramic capacitor to CP1."
      },
      {
        "number": "42",
        "name": "CP1",
        "type": "passive",
        "description": "Charge pump capacitor terminal, connect at least 1 µF ceramic capacitor to CP2."
      },
      {
        "number": "43",
        "name": "VBRG",
        "type": "input",
        "description": "Sense input to the top of the external MOSFET bridge and reference for the charge pump and NVM programming; needs at least 100 nF to GND, operating 4.5 to 80 V."
      },
      {
        "number": "44",
        "name": "VBB",
        "type": "power_in",
        "description": "Main power supply of 10 to 80 V via reverse-voltage protection, decoupled with ceramic capacitors close to the pin."
      },
      {
        "number": "45",
        "name": "HA",
        "type": "input",
        "description": "Logic input controlling the phase A high-side gate drive, selectable active high or low with pull-down/pull-up, battery-voltage compliant (up to 80 V)."
      },
      {
        "number": "46",
        "name": "ENABLE",
        "type": "input",
        "description": "Disables all gate drive outputs when pulled low in direct mode or after a timeout in watchdog mode; can be pulled to VBB."
      },
      {
        "number": "47",
        "name": "RESETn",
        "type": "input",
        "description": "Resets faults when pulsed low and forces sleep when held low longer than tRSD; can be pulled to VBB."
      },
      {
        "number": "48",
        "name": "LX",
        "type": "output",
        "description": "Buck converter inductor switching node, rated -1 to 80 V."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "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 -B variant has the buck regulator disabled (external 12 V applied to VREG and VBB). LX, VREG dir; Pin types for bidirectional/analog pins (CA/CB/CC, Sx, LSSx, CP1/CP2) are inferred as passive since ",
          "30/49 pins cited to the wrong page (name found elsewhere): ['6:DIAG@p18', '8:SBL@p18', '9:SCL@p18', '11:SDI@p18']"
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        "at": "2026-10-31T02:24:12"
      },
      "datasheet": {
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        "pages": 73,
        "sha256": "b8b11ad0be155771",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
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