BQ7694002DBT

Battery Management Overview

The BQ7694002DBT is a battery monitor from the Texas Instruments bq76940 family, designed for 9 to 15-series cell lithium-ion and lithium-phosphate battery packs. It operates within a supply voltage range of 6 V to 25 V and features an integrated 3.3 V LDO regulator. The device supports up to 15 series cells with a maximum input voltage of 66 V. It utilizes an I2C interface for communication and functions within an operating temperature range of -40 °C to +85 °C. The component is housed in a 44-pin TSSOP package.

Battery Management Feature Summary

• Supports monitoring of 9 to 15 series connected battery cells
• Integrates a low-dropout regulator for internal power supply
• Provides programmable overvoltage and undervoltage protection thresholds
• Enables precise cell voltage measurement via high-accuracy analog front-end

Battery Management Applications

• Lithium-ion battery pack management systems
• Lithium iron phosphate (LiFePO4) battery monitoring
• Portable energy storage units
• Electric vehicle auxiliary battery modules

Battery Management Procurement Notes

Verify the specific suffix 'DBT' corresponds to the tube packaging variant rather than the 'TR' tape-and-reel option. Confirm that the 44-pin TSSOP footprint matches the target PCB design. Ensure the application requires support for up to 15 series cells, as this part is not suitable for configurations exceeding this limit or requiring different pin counts.

Battery Management Selection Notes

Select this component when designing systems requiring monitoring of 9 to 15 series cells. It is appropriate for applications needing an integrated LDO and I2C communication. Consider alternative parts if fewer than 9 series cells are required or if higher series counts are necessary. Verify thermal requirements for the TSSOP package in enclosed environments.

Battery Management Part Context

This device belongs to the bq76940 family of battery monitors. It shares architectural similarities with other members like the BQ7694000 and BQ7694003, differing primarily in supported series cell count and package configuration. The family targets general-purpose battery management for portable and industrial applications.

Battery Management Replacement Considerations

BQ7694000DBT: Supports 6 to 10 series cells; verify cell count compatibility. BQ7694003DBT: Supports 9 to 15 series cells; check for functional equivalence.