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BQ21040DBVT

Public Made by Adom

by 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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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs bq21040dbvt: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers bq21040dbvt: viewers · Ray 1mo ago
bq21040dbvt-etched.fit.json bq21040dbvt: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bq21040dbvt-etched.glb bq21040dbvt: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bq21040dbvt-etched.step bq21040dbvt: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bq21040dbvt.glb Publish 0.1.0 · Ray 1mo ago
bq21040dbvt.kicad_mod Publish 0.1.0 · Ray 1mo ago
bq21040dbvt.kicad_sym Publish 0.1.0 · Ray 1mo ago
bq21040dbvt.lbr Publish 0.1.0 · Ray 1mo ago
bq21040dbvt.step Publish 0.1.0 · Ray 1mo ago
package.json bq21040dbvt: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json bq21040dbvt: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md Initial commit: component/bq21040dbvt · Ray 1mo ago

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 (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