: It is frequently paired with high-voltage Lithium Polymer ( LiHV ) cells (4.4V), which can drop voltage rapidly below 3.5V, sometimes causing the chip to struggle with State-of-Charge (SoC) calculations if not properly calibrated.
in laptop batteries, particularly those for Dell systems. It is responsible for monitoring battery health, managing charging cycles, and providing precise state-of-charge data. Key Technical Aspects Functionality bq40370
| Hypothesis | Likelihood | Reasoning | |------------|------------|------------| | Typographical error | High | Common mistypes: bq4050, bq40z70 (exists as bq40z70-R2? No), bq40350, bq40570. | | Obsolete / pre-release part | Low | No archival evidence in TI’s retired product lists. | | Custom or OEM part number | Medium | Some manufacturers use non-public codes for customer-specific ICs. | | Non-TI product | Low | Prefix “bq” is almost exclusively TI battery management. | | Internal company code | Medium | Could be an internal tracking number (BOM, assembly, or test code). | BQ40370 Report 2
The BQ40370 is suitable for use in a wide range of applications, including: Kelvin Connections: The sense resistor traces must be