BQ40Z50RSMT-R2

Battery Management Overview

The BQ40Z50RSMT-R2 is a Battery Pack Manager from Texas Instruments designed for 1- to 4-series Li-Ion and Li-Polymer battery packs. It integrates gas gauging and protection functions using the Impedance Track algorithm. The device operates within a supply voltage range of 2.2 V to 26 V, with an output voltage of 26 V and an output current capability of 22.5 mA. It supports battery capacities from 100 mAh to 29 Ah. The component is housed in a 32-pin HVQCCN (VQFN) package, measuring 4 mm in length. It features a wide operating temperature range from -40 °C to +85 °C and has a humidity sensitivity rating of Level 2.

Battery Management Feature Summary

• Integrates Impedance Track fuel gauging and comprehensive battery pack protection for autonomous operation.
• Supports communication interfaces for system integration and data exchange.
• Features adjustable thresholds for flexible configuration across various battery chemistries.

Battery Management Applications

• Laptop computer battery packs
• Power tool battery systems
• Unmanned aerial vehicle (drone) power sources

Battery Management Procurement Notes

Verify the specific suffix R2 against the manufacturer's latest datasheet to confirm pinout and functional compatibility. Ensure the ordering part number matches the required reel or cut tape packaging format. Confirm RoHS compliance status and lead time requirements with authorized distributors prior to procurement.

Battery Management Selection Notes

Select this component for applications requiring high-precision state-of-charge estimation in 1S to 4S lithium-ion configurations. Consider the 32-VQFN package constraints for PCB layout. Evaluate the 2.2 V to 26 V operating voltage range against the system's power supply architecture to ensure stable operation under all load conditions.

Battery Management Part Context

This device belongs to the BQ40Z50 family of battery management ICs. It serves as a complete solution for battery pack monitoring, combining coulomb counting with over-current and short-circuit protection. The RSMT variant indicates a specific surface-mount tape-and-reel packaging option suitable for automated assembly processes.

Battery Management Replacement Considerations

The BQ40Z50RSMT-R1 is a documented substitute within the same series. Verify register compatibility and firmware support when migrating between R1 and R2 revisions to ensure identical operational behavior.