BQ40Z50RSMR-R1

Battery Management Overview

The BQ40Z50RSMR-R1 is a battery fuel gauge and pack manager from Texas Instruments designed for 1 to 4 series lithium-ion or lithium-polymer battery packs. It operates within a supply voltage range of 2.2 V to 26 V, with an output voltage capability up to 26 V and an output current of 22.5 mA. The device functions in an ambient temperature range of -40 °C to +85 °C and consumes 336 µA during operation. It is housed in a VQFN-32 package suitable for surface mount installation.

Battery Management Feature Summary

• Integrates a flash-programmable custom RISC CPU for autonomous system control
• Utilizes compensated discharge-end-voltage (CEDV) technology for state-of-charge estimation
• Includes integrated SHA-1 authentication for secure data exchange
• Features N-channel FET drivers for external protection circuitry

Battery Management Applications

• Laptop computers
• Portable medical devices
• Industrial handheld equipment
• Power tools

Battery Management Procurement Notes

Verify the specific revision suffix '-R1' against the manufacturer's latest documentation to ensure compatibility with required firmware features and pin configurations. Confirm that the VQFN-32 package dimensions align with the target PCB footprint. Ensure the selected component meets the necessary RoHS compliance standards for the intended market.

Battery Management Selection Notes

Select this component when precise state-of-charge accuracy is required for 1 to 4 series lithium-based battery systems. It is appropriate for applications needing integrated fuel gauging and protection management without external microcontrollers. Consider the operating voltage range and thermal requirements to ensure suitability for the specific environmental conditions of the end product.

Battery Management Part Context

This part belongs to the BQ40Z50 family of battery management solutions. It serves as a highly integrated solution combining fuel gauging, protection, and communication interfaces. The device is designed to replace discrete components by providing a complete battery pack management system within a single chip architecture.

Battery Management Replacement Considerations

BQ40Z50RSMR

Battery Management FAQ

What battery chemistries does the BQ40Z50RSMR-R1 support?

It supports Lithium-ion and Lithium Polymer battery types.

Does the device include internal protection logic?

Yes, it includes integrated protection logic and N-channel FET drivers for managing cell balance and safety.