BQ29400ADCT3E6

Battery Management Overview

The BQ29400ADCT3E6 is a secondary battery protection IC designed for lithium-ion and lithium-polymer battery packs consisting of two, three, or four cells in series. It provides overvoltage protection by disconnecting the pack when cell voltage exceeds the detection threshold. The device operates within an ambient temperature range of -25°C to +85°C and is housed in an 8-pin SM-8 (SSOP) package.

Battery Management Feature Summary

• Provides secondary overvoltage protection for multi-cell lithium-based battery packs
• Automatically disconnects the battery pack upon detecting overvoltage conditions

Battery Management Applications

• Secondary protection circuits for portable electronic devices
• Battery management systems for power tools
• Protection stages in electric vehicle battery modules

Battery Management Procurement Notes

Verify the specific suffix 'E6' against official Texas Instruments documentation to confirm lead-free status and RoHS compliance details. Ensure the SM-8 package dimensions match the target PCB footprint requirements. Cross-reference the part number with the latest datasheet revision history to validate current manufacturing status and any potential design-in restrictions.

Battery Management Selection Notes

Select this component when a dedicated secondary overvoltage protection stage is required for 2S to 4S lithium battery configurations. It serves as a backup safety mechanism independent of primary protection controllers. Consider the fixed detection threshold characteristics and the specific operating temperature range limitations when designing for extreme environmental conditions.

Battery Management Part Context

This component belongs to the BQ29400 family of battery protection ICs from Texas Instruments. It is functionally related to variants such as the BQ29401 and BQ29405, which offer different detection thresholds or additional features like undervoltage protection. The family is designed to provide robust safety mechanisms for rechargeable lithium-ion and lithium-polymer battery applications.

Battery Management Replacement Considerations

Official substitutes include BQ29400DCT3 and BQ29400PWR. Verify package compatibility and electrical parameter alignment before substitution.