BQ29400DCT3E6

Battery Management Overview

The BQ29400DCT3E6 is a secondary battery protection IC designed for lithium-ion and lithium-polymer batteries with two to four cells in series. It provides overvoltage protection by disconnecting the charge path when the cell voltage exceeds the detection threshold of 4.45V. The device operates within a supply voltage range of 4V to 25V and features an internal discharge path to balance cell voltages. It is housed in an 8-pin SM-8 package.

Battery Management Feature Summary

• Provides secondary overvoltage protection for multi-cell lithium-ion battery packs
• Integrates an internal discharge path for passive cell balancing
• Operates across a wide supply voltage range suitable for various pack configurations

Battery Management Applications

• Secondary protection stages in portable electronic devices
• Battery management systems for power tools
• Uninterruptible power supply (UPS) battery packs

Battery Management Procurement Notes

Verify the specific suffix E6 against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the design supports the required operating temperature range and that the SM-8 package dimensions align with the PCB footprint. Cross-reference the part number with official Texas Instruments documentation to avoid counterfeit components.

Battery Management Selection Notes

Select this component when a dedicated secondary protection layer is required alongside a primary controller. It is suitable for applications needing fixed overvoltage thresholds without external resistor networks. Consider the internal discharge capability if cell balancing is necessary to maintain pack health. Evaluate the package size constraints relative to the available board space.

Battery Management Part Context

This part belongs to the BQ29400 family of battery protection ICs from Texas Instruments. It serves as a standalone safety monitor, complementing primary charging controllers. The family includes variants with different thresholds and packages, offering flexibility for diverse battery pack architectures and safety standards compliance.

Battery Management Replacement Considerations

Direct replacements include BQ29400DCT3 and BQ29401DCT3, provided the threshold voltage matches the system requirements. Verify package compatibility and electrical specifications before substitution.