BQ29410PWRG4

Battery Management Overview

The BQ29410PWRG4 is a secondary over-voltage protection integrated circuit designed for lithium-ion and lithium-polymer battery packs consisting of two to four cells in series. It operates within a supply voltage range of 4 V to 25 V and provides reliable protection against over-voltage conditions that could compromise cell integrity. The device features a fixed over-voltage threshold of 4.35 V, ensuring consistent performance across varying operating conditions. It is housed in an 8-pin TSSOP package with a wide operating temperature range from -40 °C to +110 °C, making it suitable for demanding industrial and commercial applications.

Battery Management Feature Summary

• Provides secondary over-voltage protection for multi-cell lithium-based battery systems
• Operates reliably across a wide industrial temperature range
• Designed for compact surface-mount integration in battery management circuits

Battery Management Applications

• Lithium-ion battery pack protection in portable devices
• Secondary safety monitoring in electric power tools
• Voltage protection for backup power supply systems

Battery Management Procurement Notes

Verify the authenticity of the Texas Instruments part number BQ29410PWRG4 through authorized distribution channels. Confirm the presence of the G4 suffix, which indicates lead-free and RoHS compliance. Ensure the packaging matches the specified TSSOP-8 form factor. Cross-reference the manufacturer date code and lot traceability to guarantee component integrity before integration into production designs.

Battery Management Selection Notes

Select this component when designing a cost-effective secondary protection stage for 2S to 4S lithium battery configurations. It serves as a dedicated hardware safeguard complementing primary battery management controllers. Consider its fixed threshold characteristics during system design, as they do not allow for software-adjustable voltage limits. Evaluate the thermal performance requirements relative to the ambient operating environment.

Battery Management Part Context

This component belongs to the BQ2941x family of battery protection ICs manufactured by Texas Instruments. The family includes variants such as the BQ29410, BQ29414, BQ29415, and BQ29419, which differ primarily in their specific over-voltage trip thresholds. The BQ29410PWRG4 specifically targets the 4.35 V threshold requirement common in standard lithium-ion chemistry applications.

Battery Management Replacement Considerations

The BQ29410PW is the non-RoHS equivalent of this component. Verify pinout compatibility and threshold specifications when substituting with other members of the BQ2941x series.