The BQ40370 consists of several functional blocks:
For new product development in 2024-2025, do not use the bq40370 . TI lists it as "NRND." Use the BQ40Z50-R2 or BQ40Z80. However, if you are maintaining legacy medical or industrial equipment, you must stick with the bq40370 for drop-in compatibility. bq40370
: The bq40370 is programmable; firmware updates or resets are often necessary when "re-packing" battery cells to clear error flags (like "Permanent Failure") that prevent the battery from charging. Common Use Cases Battery Repair The BQ40370 consists of several functional blocks: For
: It controls the Charge and Discharge FETs and can trigger a physical thermal fuse (often part number D6SA3-12 ) to permanently disable the battery if it detects a critical failure like cell imbalance or over-temperature. Common Issues and Troubleshooting : The bq40370 is programmable; firmware updates or