BQ76925RGET

Battery Management Overview

The BQ76925RGET is a battery management analog front-end (AFE) designed for 3 to 6 series lithium-ion or lithium-polymer cells. It operates within a supply voltage range of 4.2 V to 26.4 V and features a quiescent current of 40 uA. The device supports up to 5 A continuous current monitoring and provides cell voltage measurement accuracy of ±10 mV. Packaged in a VQFN-24 surface-mount case, it functions across an operating temperature range of -25 C to +85 C.

Battery Management Feature Summary

• Integrates high-precision cell voltage monitoring with programmable overvoltage and undervoltage protection thresholds.
• Supports integrated N-channel MOSFET control for charge and discharge path switching via internal drivers.
• Includes dedicated hardware inputs for external current sensing resistors to enable accurate current monitoring.

Battery Management Applications

• Battery management systems for portable electronics
• Power tool battery packs
• Uninterruptible power supply (UPS) modules

Battery Management Procurement Notes

Verify the specific suffix 'RGET' corresponds to the cut-tape packaging format rather than reel quantities when sourcing. Confirm that the VQFN-24 thermal pad requirements are met by the target PCB layout to ensure proper heat dissipation during operation. Check for any recent product change notifications regarding material composition or pinout adjustments before finalizing the design.

Battery Management Selection Notes

Select this component for applications requiring precise cell balancing and protection in multi-cell series configurations. Ensure the system architecture supports the required I2C communication interface for configuration and data retrieval. Evaluate the thermal performance of the VQFN-24 package against the expected ambient conditions and power dissipation levels of the application.

Battery Management Part Context

This part belongs to the BQ76925 family of battery monitors from Texas Instruments. It serves as a specialized analog front-end solution for protecting and monitoring series-connected lithium-based battery cells. The device complements microcontroller units by handling critical safety functions and high-voltage signal conditioning.

Battery Management Replacement Considerations

BQ76925PW

Battery Management FAQ

What is the maximum number of series cells supported?

The BQ76925RGET is designed to monitor and protect battery packs consisting of 3 to 6 series-connected cells.

Does the device include internal charge and discharge switches?

No, the BQ76925RGET controls external N-channel MOSFETs through its driver outputs but does not contain integrated internal switches.