Bq40370 ^hot^ Link

The BQ40370 is a specialized battery management chip developed by Texas Instruments (TI), primarily found in Dell laptop batteries (such as the WDX0R, 3DDDG, and F3YGT models). Unlike standard retail chips, it is a custom product, meaning full public datasheets and documentation are generally unavailable from TI. Key Technical Specs & Features

4. Functional Blocks

4.1. Analog Front End (AFE)

Measures cell voltages (differential, 14-bit ADC)
Measures pack current (16-bit integrating ADC)
Drives protection FETs (CHG, DSG)

Software Tools: To interface with or reset these chips, technicians use specialized hardware and software: bq40370

A technical article explaining the features and functionality of the part?
A product review or evaluation?
A tutorial or guide on how to use the part in a specific project or application?
A news article about the part or its manufacturer?

Continuous OC detection uses current-sense resistor voltage across sense amplifier.
If current exceeds OC threshold for longer than an OC blanking time (to ignore inrush), device transitions to limit or opens FETs.
Two-level response: a soft limit (current regulation) for moderate overcurrent and hard disconnect for sustained OC.

5. Conclusion

No solid technical documentation exists under the identifier bq40370 in public sources. The most probable explanation is a transcription error of a Texas Instruments bq40xxx battery management IC. Without additional context (e.g., device markings, PCB label, or originating system), a definitive match is impossible. The BQ40370 is a specialized battery management chip

Enabling/disabling

4. Recommendations

To resolve the identity of bq40370, consider the following actions: Software Tools: To interface with or reset these