BQ21040DBVR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq21040dbvr",
  "title": "BQ21040DBVR",
  "brief": "Texas Instruments Battery Management, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "bq21040dbvr"
  ],
  "component": {
    "mpn": "BQ21040DBVR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq21040.pdf",
    "parts": {
      "symbol": "bq21040dbvr.kicad_sym",
      "footprint": "bq21040dbvr.kicad_mod",
      "model_3d": "bq21040dbvr-etched.glb",
      "model_3d_plain": "bq21040dbvr.glb",
      "model_3d_step": "bq21040dbvr-etched.step",
      "model_3d_step_plain": "bq21040dbvr.step",
      "lbr": "bq21040dbvr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TS",
        "type": "input",
        "description": "Temperature sense terminal connected to a 10-kΩ (at 25°C) NTC thermistor in the battery pack. Floating or pulling this pin High places the part in TTDM (Charger) mode, disabling TS monitoring, timers, and termination. Pulling it Low disables the IC. If NTC sensing is not used, connect this pin to VSS through an external 10-kΩ resistor; a 237-kΩ resistor to TS will prevent entering TTDM when the battery has no thermistor."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Battery connection; the system load may also be connected here. Expected range of bypass capacitors is 1 µF to 10 µF. Sources charge current up to 800 mA and regulates to VOUT(REG) = 4.2 V."
      },
      {
        "number": "3",
        "name": "/CHG",
        "type": "output",
        "description": "Open-drain charge-status indicator. Low (FET on) indicates charging in progress; Open (FET off) indicates no charging or charge complete. Max sink current 15 mA; typically drives a status LED to VIN."
      },
      {
        "number": "4",
        "name": "ISET",
        "type": "input",
        "description": "Fast-charge current programming input. External resistor from ISET to VSS defines the fast-charge current (IOUT = KISET/RISET, KISET ≈ 540 A·Ω). Programmable resistor range 0.675 kΩ to 10.8 kΩ gives 50 mA to 800 mA."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / VSS reference terminal for the device."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input power connection to external DC supply (AC adapter or USB port). Operating range 4.45 V to 6.45 V (recommended), absolute max 30 V with 6.6-V input overvoltage protection. Expected range of bypass capacitors 1 µF to 10 µF, connected from IN to VSS."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq21040.pdf",
        "pages": 31,
        "sha256": "66c454e4978439d2",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bq21040dbvr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq21040dbvr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f437ded4da13359c9484d0e39f8b7b81c261b0ba73e25572b0a2d35f387f309f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bq21040dbvr"
  ],
  "discovery_pitch": "BQ21040DBVR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq21040dbvr.kicad_sym",
    "bq21040dbvr.kicad_mod",
    "bq21040dbvr.glb",
    "bq21040dbvr.step",
    "bq21040dbvr-etched.step",
    "bq21040dbvr.lbr",
    "docs/hero.png",
    "docs/bq21040dbvr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:00:13.988Z"
}