BQ29440DRBR

Battery Management Overview

The BQ29440DRBR 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 features a low operating supply current of 2 µA. The device provides precise voltage monitoring to prevent cell damage from over-voltage conditions, ensuring reliable battery management in portable electronics.

Battery Management Feature Summary

• Provides secondary over-voltage protection for multi-cell lithium-based battery packs
• Operates with ultra-low quiescent current to minimize standby power consumption
• Compatible with standard surface-mount assembly processes

Battery Management Applications

• Portable electronic devices requiring multi-cell battery protection
• Lithium-ion and lithium-polymer battery pack management systems
• Consumer electronics with strict power efficiency requirements

Battery Management Procurement Notes

Verify the specific suffix DRBR against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with your PCB footprint and reflow soldering profile. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components and confirm RoHS compliance status.

Battery Management Selection Notes

Select this component when designing circuits that require dedicated secondary over-voltage protection for 2-4 series cell configurations. Consider the 8-SON package size for space-constrained layouts. Evaluate the 2 µA supply current against system sleep mode requirements to ensure minimal impact on overall battery life.

Battery Management Part Context

This component belongs to the BQ2944x family of battery protection ICs from Texas Instruments. It serves as a specialized solution for safeguarding lithium-ion and lithium-polymer batteries against over-voltage events. The device complements primary protection circuits by providing an additional layer of safety for critical battery applications.

Battery Management Replacement Considerations

The BQ29441DRBT is a related variant within the same product family offering similar protection functions. Verify pinout compatibility and electrical parameter alignment before substitution. Consult official datasheets to confirm functional equivalence for your specific application requirements.