BQ2018SN-E1TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq2018sn-e1tr",
  "title": "BQ2018SN-E1TR",
  "brief": "Texas Instruments Battery Management, SOIC-8. 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 (pmic)",
    "bq2018sn-e1tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ2018SN-E1TR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq2018",
    "parts": {
      "symbol": "bq2018sn-e1tr.kicad_sym",
      "footprint": "bq2018sn-e1tr.kicad_mod",
      "model_3d": "bq2018sn-e1tr-hero.glb",
      "model_3d_plain": "bq2018sn-e1tr.glb",
      "model_3d_step": "bq2018sn-e1tr-etched.step",
      "model_3d_step_plain": "bq2018sn-e1tr.step",
      "lbr": "bq2018sn-e1tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2873506",
      "digikey": "BQ2018SN-E1TR-ND",
      "mouser": "595-BQ2018SN-E1TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T23:42:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BQ2018SN-E1TR-ND",
        "status": "found",
        "lifecycle": "Last Time Buy"
      },
      "mouser": {
        "pn": "595-BQ2018SN-E1TR",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "REG",
        "type": "output",
        "description": "Output of the OTA that drives an external pass n-channel JFET to provide an optional supply regulated at 3.7V nominal."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, 3.7V ±200mV when regulated by the REG output, or 2.8V to 5.5V valid operating range when REG is not used."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "4",
        "name": "HDQ",
        "type": "bidirectional",
        "description": "Open-drain bi-directional data input/output to the host, requiring a pullup/down resistor in the battery pack to disable/enable sleep mode if the pack is removed from the system."
      },
      {
        "number": "5",
        "name": "RBI",
        "type": "power_in",
        "description": "Register backup input that maintains the internal register states while VCC is below the minimum operating voltage."
      },
      {
        "number": "6",
        "name": "SR2",
        "type": "input",
        "description": "Current sense input connecting to the sense resistor and the negative terminal of the pack, with a valid input range of ±200mV."
      },
      {
        "number": "7",
        "name": "SR1",
        "type": "input",
        "description": "Current sense input connecting to the sense resistor and the negative terminal of the battery, with a valid input range of ±200mV (VSR1 < VSR2 indicates discharge, VSR1 > VSR2 indicates charge)."
      },
      {
        "number": "8",
        "name": "WAKE",
        "type": "output",
        "description": "Wake-up output asserted (low) to indicate charge or discharge activity above a programmed minimal level, and High Z when below that level."
      }
    ],
    "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 pin numbers are inferred from the pin-connection diagram, which survives text extraction only as; The datasheet describes the 8-pin TSSOP (TS) variant as well, but this MPN is the SOIC (SN/D) option"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0446,
        "at": "2026-10-08T23:41:29"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq2018",
        "pages": 31,
        "sha256": "f4821fba7e5475f5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "bq2018sn-e1tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq2018sn-e1tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c13dce11e8be93d08dbbe4807889c7b2f7478d02d040155360076dbed3fe155b",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bq2018sn-e1tr"
  ],
  "discovery_pitch": "BQ2018SN-E1TR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "bq2018sn-e1tr.step",
    "bq2018sn-e1tr.lbr",
    "docs/hero.png",
    "docs/bq2018sn-e1tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq2018sn-e1tr-hero.glb",
    "bq2018sn-e1tr-hero.overlay.json"
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  "visibility": {
    "public": true
  }
}