BQ29412PWR

Battery Management Overview

The BQ29412PWR is a secondary voltage protection integrated circuit designed for lithium-ion battery packs consisting of two, three, or four series-connected cells. It operates within a supply voltage range of 4 V to 25 V and features an overvoltage threshold of 4.45 V. The device is housed in an 8-pin TSSOP package and supports surface-mount installation. It functions as a second-level protection mechanism, monitoring cell voltages to prevent damage from excessive charging conditions.

Battery Management Feature Summary

• Provides secondary overvoltage protection for multi-cell lithium-ion battery configurations
• Monitors individual cell voltages to ensure safe operating limits are maintained
• Designed for integration into portable electronic devices requiring robust battery safety

Battery Management Applications

• Portable consumer electronics battery packs
• Power tool battery assemblies
• Medical device power systems
• Uninterruptible power supply (UPS) modules

Battery Management Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and electrical thresholds. Confirm RoHS compliance status and lead-free certification requirements prior to procurement. Ensure the selected variant matches the required package type and thermal specifications for the target application environment.

Battery Management Selection Notes

Select this component when secondary overvoltage protection is required for 2- to 4-cell Li-ion architectures. Evaluate the fixed 4.45 V threshold against battery chemistry requirements. Consider the TSSOP-8 package constraints for PCB layout and thermal management. Verify that the operating temperature range meets system environmental standards.

Battery Management Part Context

This part belongs to the BQ294xx family of battery protection ICs from Texas Instruments. These components serve as secondary protection layers, complementing primary protection circuits. The family targets various cell counts and voltage thresholds, with the BQ29412 specifically addressing standard Li-ion overvoltage scenarios in compact packages.

Battery Management Replacement Considerations

Direct replacements include BQ29412DCT3R and BQ29412DCTT. Verify package compatibility between TSSOP and SM-8 variants. Check datasheet revisions for any changes in threshold tolerances or operational characteristics before substituting.