BQ771811DPJT

Battery Management Overview

The BQ771811DPJT is a battery management integrated circuit from Texas Instruments, designed for 2- to 5-series lithium-ion or lithium-polymer battery packs. It functions as an overvoltage protector with integrated cell voltage monitoring and protection features. The device operates within a supply voltage range of 2V to 24V and supports communication via I²C interface. It includes programmable thresholds for overvoltage, undervoltage, and short-circuit protection, ensuring safe operation in portable electronics and power tool applications.

Battery Management Feature Summary

• Integrated cell voltage monitoring for up to five series-connected cells
• Programmable protection thresholds for overvoltage, undervoltage, and short circuits
• I²C digital interface for configuration and status reporting
• Supports passive balancing through external FET control

Battery Management Applications

• Portable electronic devices requiring multi-cell battery protection
• Power tools with lithium-ion battery packs
• Medical equipment using series-connected battery systems
• Uninterruptible power supplies (UPS) with modular battery configurations

Battery Management Procurement Notes

Verify the exact part number suffix against official Texas Instruments documentation to confirm package type, temperature grade, and tape/reel specifications. Ensure compatibility with your system’s I²C addressing and voltage levels before procurement. Cross-reference with authorized distributors to avoid counterfeit components.

Battery Management Selection Notes

Select this component when designing systems requiring reliable overvoltage protection for 2–5 series lithium batteries. Confirm that the operating voltage range and protection thresholds align with your battery chemistry and application requirements. Evaluate thermal performance and PCB layout constraints for optimal functionality.

Battery Management Part Context

The BQ771811DPJT belongs to Texas Instruments’ BQ7718xx family of battery protection ICs. This family provides scalable solutions for multi-cell battery packs with integrated monitoring and protection capabilities. The DPJT suffix indicates a specific package and reel configuration suitable for surface-mount assembly.

Battery Management Replacement Considerations

Check Texas Instruments’ official substitution guide for compatible alternatives such as other members of the BQ7718xx series. Verify pinout compatibility and functional equivalence before replacing. No direct substitute part numbers are publicly confirmed without further datasheet validation.