component
BQ21040DBVT
Public Made by Adomby adom
Texas Instruments Battery Management, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+42@@ -0,0 +1,42 @@+# BQ21040DBVT++**Texas Instruments** · Battery Management · SOT-23-6++BQ21040DBVT from Texas Instruments, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | TS | input | Temperature sense terminal connected to NTC thermistor in battery pack; floating or high voltage enters TTDM mode, low disables IC, or use fixed 10kΩ resistor to VSS if thermistor not needed. |+| 2 | OUT | output | Battery charging output terminal supporting system load; 1μF to 10μF bypass capacitor expected. |+| 3 | CHG | tri_state | Open drain charge status output; low (FET on) during first charge cycle, high impedance (FET off) when charge complete or no charging. |+| 4 | ISET | input | Fast-charge current programming input; external resistor to VSS from 10.8kΩ (50mA) to 675Ω (800mA) defines fast charge current. |+| 5 | GND | power_in | Ground terminal and thermal pad connection to PCB ground plane. |+| 6 | VIN | power_in | Input power supply from AC adapter or USB port; 3.5V to 28V operating range with 1μF to 10μF bypass capacitor to VSS recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-6 |+| Category | Power Management (PMIC) |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `BQ21040DBVT`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)+- 3D model files: `bq21040dbvt-etched.step` / `bq21040dbvt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq21040dbvt.step` / `bq21040dbvt.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq21040.pdf) (31 pp, sha256 `66c454e4978439d2`, retrieved 2026-09-24, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/bq21040dbvt-datasheet.pdf)
page.jsonadded+129@@ -0,0 +1,129 @@+{+ "slug": "bq21040dbvt",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Battery Management, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "bq21040dbvt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bq21040dbvt.kicad_sym",+ "bq21040dbvt.kicad_mod",+ "bq21040dbvt.glb",+ "bq21040dbvt.step",+ "bq21040dbvt.lbr",+ "docs/hero.png",+ "docs/bq21040dbvt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BQ21040DBVT",+ "manufacturer": "Texas Instruments",+ "package": "SOT-23-6",+ "pin_count": 6,+ "category": "Power Management (PMIC)",+ "subcategory": "Battery Management",+ "datasheet": "https://www.ti.com/lit/ds/symlink/bq21040.pdf",+ "parts": {+ "symbol": "bq21040dbvt.kicad_sym",+ "footprint": "bq21040dbvt.kicad_mod",+ "model_3d": "bq21040dbvt-etched.glb",+ "model_3d_plain": "bq21040dbvt.glb",+ "model_3d_step": "bq21040dbvt-etched.step",+ "model_3d_step_plain": "bq21040dbvt.step",+ "lbr": "bq21040dbvt.lbr"+ },+ "distributor_links": {+ "lcsc": "C78978"+ },+ "pins": [+ {+ "number": "1",+ "name": "TS",+ "type": "input",+ "description": "Temperature sense terminal connected to NTC thermistor in battery pack; floating or high voltage enters TTDM mode, low disables IC, or use fixed 10kΩ resistor to VSS if thermistor not needed."+ },+ {+ "number": "2",+ "name": "OUT",+ "type": "output",+ "description": "Battery charging output terminal supporting system load; 1μF to 10μF bypass capacitor expected."+ },+ {+ "number": "3",+ "name": "CHG",+ "type": "tri_state",+ "description": "Open drain charge status output; low (FET on) during first charge cycle, high impedance (FET off) when charge complete or no charging."+ },+ {+ "number": "4",+ "name": "ISET",+ "type": "input",+ "description": "Fast-charge current programming input; external resistor to VSS from 10.8kΩ (50mA) to 675Ω (800mA) defines fast charge current."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Ground terminal and thermal pad connection to PCB ground plane."+ },+ {+ "number": "6",+ "name": "VIN",+ "type": "power_in",+ "description": "Input power supply from AC adapter or USB port; 3.5V to 28V operating range with 1μF to 10μF bypass capacitor to VSS recommended."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 31,+ "cost_usd": 0.2762,+ "at": "2026-09-24T10:36:21"+ },+ "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"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}