ADBMS1818ASWZ-RL

{
  "slug": "adbms1818aswz-rl",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Battery Management, LQFP-64-EP(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "adbms1818aswz-rl",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "adbms1818aswz-rl.kicad_sym",
    "adbms1818aswz-rl.kicad_mod",
    "adbms1818aswz-rl.glb",
    "adbms1818aswz-rl.step",
    "adbms1818aswz-rl.lbr",
    "docs/hero.png",
    "docs/adbms1818aswz-rl-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "adbms1818aswz-rl-hero.glb",
    "adbms1818aswz-rl-hero.overlay.json",
    "adbms1818aswz-rl-etched.glb"
  ],
  "component": {
    "mpn": "ADBMS1818ASWZ-RL",
    "manufacturer": "Analog Devices",
    "package": "LQFP-64-EP(10x10)",
    "pin_count": 65,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589785203305574400",
    "parts": {
      "symbol": "adbms1818aswz-rl.kicad_sym",
      "footprint": "adbms1818aswz-rl.kicad_mod",
      "model_3d": "adbms1818aswz-rl-hero.glb",
      "model_3d_plain": "adbms1818aswz-rl-etched.glb",
      "model_3d_step": "adbms1818aswz-rl-etched.step",
      "model_3d_step_plain": "adbms1818aswz-rl.step",
      "lbr": "adbms1818aswz-rl.lbr"
    },
    "distributor_links": {
      "lcsc": "C2971928"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T17:48:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply pin; absolute maximum V+ to V- is 112.5 V."
      },
      {
        "number": "2",
        "name": "C0",
        "type": "input",
        "description": "Cell input C0 (bottom of the cell stack); absolute maximum -0.3 V to +6 V relative to V-."
      },
      {
        "number": "3",
        "name": "S1",
        "type": "bidirectional",
        "description": "Balance input/output 1; internal N-channel MOSFET connected between S1 and C0 for discharging the cell."
      },
      {
        "number": "4",
        "name": "C1",
        "type": "input",
        "description": "Cell input C1."
      },
      {
        "number": "5",
        "name": "S2",
        "type": "bidirectional",
        "description": "Balance input/output 2; internal N-channel MOSFET connected between S2 and C1 for discharging the cell."
      },
      {
        "number": "6",
        "name": "C2",
        "type": "input",
        "description": "Cell input C2."
      },
      {
        "number": "7",
        "name": "S3",
        "type": "bidirectional",
        "description": "Balance input/output 3; internal N-channel MOSFET connected between S3 and C2 for discharging the cell."
      },
      {
        "number": "8",
        "name": "C3",
        "type": "input",
        "description": "Cell input C3."
      },
      {
        "number": "9",
        "name": "S4",
        "type": "bidirectional",
        "description": "Balance input/output 4; internal N-channel MOSFET connected between S4 and C3 for discharging the cell."
      },
      {
        "number": "10",
        "name": "C4",
        "type": "input",
        "description": "Cell input C4."
      },
      {
        "number": "11",
        "name": "S5",
        "type": "bidirectional",
        "description": "Balance input/output 5; internal N-channel MOSFET connected between S5 and C4 for discharging the cell."
      },
      {
        "number": "12",
        "name": "C5",
        "type": "input",
        "description": "Cell input C5."
      },
      {
        "number": "13",
        "name": "S6",
        "type": "bidirectional",
        "description": "Balance input/output 6; internal N-channel MOSFET connected between S6 and C5 for discharging the cell."
      },
      {
        "number": "14",
        "name": "C6",
        "type": "input",
        "description": "Cell input C6."
      },
      {
        "number": "15",
        "name": "S7",
        "type": "bidirectional",
        "description": "Balance input/output 7; internal N-channel MOSFET connected between S7 and C6 for discharging the cell."
      },
      {
        "number": "16",
        "name": "C7",
        "type": "input",
        "description": "Cell input C7."
      },
      {
        "number": "17",
        "name": "S8",
        "type": "bidirectional",
        "description": "Balance input/output 8; internal N-channel MOSFET connected between S8 and C7 for discharging the cell."
      },
      {
        "number": "18",
        "name": "C8",
        "type": "input",
        "description": "Cell input C8."
      },
      {
        "number": "19",
        "name": "S9",
        "type": "bidirectional",
        "description": "Balance input/output 9; internal N-channel MOSFET connected between S9 and C8 for discharging the cell."
      },
      {
        "number": "20",
        "name": "C9",
        "type": "input",
        "description": "Cell input C9."
      },
      {
        "number": "21",
        "name": "S10",
        "type": "bidirectional",
        "description": "Balance input/output 10; internal N-channel MOSFET connected between S10 and C9 for discharging the cell."
      },
      {
        "number": "22",
        "name": "C10",
        "type": "input",
        "description": "Cell input C10."
      },
      {
        "number": "23",
        "name": "S11",
        "type": "bidirectional",
        "description": "Balance input/output 11; internal N-channel MOSFET connected between S11 and C10 for discharging the cell."
      },
      {
        "number": "24",
        "name": "C11",
        "type": "input",
        "description": "Cell input C11."
      },
      {
        "number": "25",
        "name": "S12",
        "type": "bidirectional",
        "description": "Balance input/output 12; internal N-channel MOSFET connected between S12 and C11 for discharging the cell."
      },
      {
        "number": "26",
        "name": "C12",
        "type": "input",
        "description": "Cell input C12; V+ must stay within 50 V of C12."
      },
      {
        "number": "27",
        "name": "S13",
        "type": "bidirectional",
        "description": "Balance input/output 13; internal N-channel MOSFET connected between S13 and C12 for discharging the cell."
      },
      {
        "number": "28",
        "name": "C13",
        "type": "input",
        "description": "Cell input C13."
      },
      {
        "number": "29",
        "name": "S14",
        "type": "bidirectional",
        "description": "Balance input/output 14; internal N-channel MOSFET connected between S14 and C13 for discharging the cell."
      },
      {
        "number": "30",
        "name": "C14",
        "type": "input",
        "description": "Cell input C14."
      },
      {
        "number": "31",
        "name": "S15",
        "type": "bidirectional",
        "description": "Balance input/output 15; internal N-channel MOSFET connected between S15 and C14 for discharging the cell."
      },
      {
        "number": "32",
        "name": "C15",
        "type": "input",
        "description": "Cell input C15."
      },
      {
        "number": "33",
        "name": "S16",
        "type": "bidirectional",
        "description": "Balance input/output 16; internal N-channel MOSFET connected between S16 and C15 for discharging the cell."
      },
      {
        "number": "34",
        "name": "C16",
        "type": "input",
        "description": "Cell input C16."
      },
      {
        "number": "35",
        "name": "S17",
        "type": "bidirectional",
        "description": "Balance input/output 17; internal N-channel MOSFET connected between S17 and C16 for discharging the cell."
      },
      {
        "number": "36",
        "name": "C17",
        "type": "input",
        "description": "Cell input C17."
      },
      {
        "number": "37",
        "name": "S18",
        "type": "bidirectional",
        "description": "Balance input/output 18; internal N-channel MOSFET connected between S18 and C17 for discharging the cell."
      },
      {
        "number": "38",
        "name": "C18",
        "type": "input",
        "description": "Cell input C18 (top cell); absolute maximum -0.3 V to MIN(V+ + 5.5 V, 112.5 V) relative to V-."
      },
      {
        "number": "39",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "40",
        "name": "GPIO2",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "41",
        "name": "GPIO3",
        "type": "bidirectional",
        "description": "General purpose I/O (digital in/out or analog input, V- to 5 V) that can also be used as an I2C or SPI port."
      },
      {
        "number": "42",
        "name": "GPIO4",
        "type": "bidirectional",
        "description": "General purpose I/O (digital in/out or analog input, V- to 5 V) that can also be used as an I2C or SPI port."
      },
      {
        "number": "43",
        "name": "GPIO5",
        "type": "bidirectional",
        "description": "General purpose I/O (digital in/out or analog input, V- to 5 V) that can also be used as an I2C or SPI port."
      },
      {
        "number": "44",
        "name": "GPIO6",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "45",
        "name": "GPIO7",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "46",
        "name": "GPIO8",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "47",
        "name": "GPIO9",
        "type": "bidirectional",
        "description": "General purpose I/O usable as digital input/output or analog input with measurement range V- to 5 V."
      },
      {
        "number": "48",
        "name": "VREG",
        "type": "power_in",
        "description": "5 V regulator pin; bypass with an external 1 µF capacitor."
      },
      {
        "number": "49",
        "name": "DRIVE",
        "type": "output",
        "description": "Connect the base of an NPN transistor here, with its collector to V+ and emitter to VREG; absolute maximum -0.3 V to +7 V."
      },
      {
        "number": "50",
        "name": "VREF2",
        "type": "output",
        "description": "Buffered 2nd reference voltage for driving multiple 10 kΩ thermistors; bypass with an external 1 µF capacitor."
      },
      {
        "number": "51",
        "name": "VREF1",
        "type": "output",
        "description": "ADC reference voltage; bypass with an external 1 µF capacitor, no dc loads allowed."
      },
      {
        "number": "52",
        "name": "DTEN",
        "type": "input",
        "description": "Discharge timer enable; connect to VREG to enable the discharge timer."
      },
      {
        "number": "53",
        "name": "SDI",
        "type": "input",
        "description": "4-wire SPI serial data in digital input (not connected in isoSPI mode)."
      },
      {
        "number": "54",
        "name": "SDO",
        "type": "output",
        "description": "4-wire SPI serial data out, open-drain NMOS output requiring a 5 kΩ pull-up resistor (not connected in isoSPI mode)."
      },
      {
        "number": "55",
        "name": "ISOMD",
        "type": "input",
        "description": "Serial interface mode select: connect to VREG for 2-wire isoSPI mode, or to V- for 4-wire SPI mode."
      },
      {
        "number": "56",
        "name": "WDT",
        "type": "output",
        "description": "Open-drain NMOS watchdog timer output; can be left disconnected or tied via 1 MΩ to VREG, goes high impedance if no valid command is received within 2 seconds."
      },
      {
        "number": "57",
        "name": "IBIAS",
        "type": "passive",
        "description": "Isolated interface current bias; tie to V- through a resistor divider, pin is at 2 V when isoSPI is enabled and output drive current is 20 times the IB sourced."
      },
      {
        "number": "58",
        "name": "ICMP",
        "type": "input",
        "description": "Isolated interface comparator threshold set; tie to the resistor divider between IBIAS and V-, comparator thresholds are half the ICMP voltage."
      },
      {
        "number": "59",
        "name": "V–",
        "type": "power_in",
        "description": "Negative supply pin; the V- pins must be shorted together externally to the IC."
      },
      {
        "number": "60",
        "name": "V–",
        "type": "power_in",
        "description": "Negative supply pin; the V- pins must be shorted together externally to the IC."
      },
      {
        "number": "61",
        "name": "CSB/IMA",
        "type": "bidirectional",
        "description": "Active-low chip select (4-wire SPI) or IMA, negative of the differential isoSPI port A pair."
      },
      {
        "number": "62",
        "name": "SCK/IPA",
        "type": "bidirectional",
        "description": "Serial clock input (4-wire SPI) or IPA, positive of the differential isoSPI port A pair."
      },
      {
        "number": "63",
        "name": "IMB",
        "type": "bidirectional",
        "description": "Isolated 2-wire serial interface port B, negative of differential input/output pair; output drive current limits are 30 mA absolute maximum."
      },
      {
        "number": "64",
        "name": "IPB",
        "type": "bidirectional",
        "description": "Isolated 2-wire serial interface port B, positive of differential input/output pair; output drive current limits are 30 mA absolute maximum."
      },
      {
        "number": "65",
        "name": "EPAD",
        "type": "power_in",
        "description": "Exposed pad (V-); must be soldered to the PCB and connected to the V- plane for thermal management."
      }
    ],
    "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: Pin 1 to pin 64 mapping comes from Table 14 only. Figure 3 (the pin configuration drawing) is not in; Table 14 and Table 15 conflict for the 4-wire SPI signals on pins 53, 54, 61, 62. Table 14 lists SDI; Table 15 lists the Port B row as IPB, IMB, ICMP, IBIAS for pins 57, 58, 63, 64, which conflicts with",
          "30/65 pins cited to the wrong page (name found elsewhere): ['10:C4@p11', '11:S5@p12', '12:C5@p11', '13:S6@p12']"
        ],
        "pages_sent": 8,
        "cost_usd": 0.1081,
        "at": "2026-10-17T17:46:34"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589785203305574400",
        "pages": 89,
        "sha256": "fdab29ebeb2e5ec7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 65,
        "described": 65,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "adbms1818aswz-rl.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dde48e46dd3f1a46fe776b812b79969568eaeab6936a6859662cd3193f2cd505",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adbms1818aswz-rl-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4cc214084ebf69121c703d5b46f942d3735a91c7364a14a95bcce15045fbadca",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}