BQ20Z75DBT

Battery Management Overview

The BQ20Z75DBT is a fuel gauge IC from the Impedance Track series, designed for lithium-ion and lithium-polymer battery packs. It operates within a voltage range of 0 V to 25 V and supports an output current of 100 mA. The device is housed in a 38-TSSOP package and functions as a multi-functional controller compatible with SMBus interfaces. It supports battery configurations of 2 to 4 cells and includes fault protection features such as overcurrent, overtemperature, over/under voltage, and short circuit protection. The operational temperature range spans from -40°C to +85°C.

Battery Management Feature Summary

• Impedance Track technology enables accurate state-of-charge estimation by modeling battery impedance characteristics.

Battery Management Applications

• Portable electronic devices requiring precise battery monitoring
• Laptop computers and tablet PCs
• Medical equipment utilizing lithium-ion power sources

Battery Management Procurement Notes

Verify the specific suffix (e.g., V160, V180) against official datasheets to confirm compatibility with required firmware or hardware revisions. Confirm component status, as certain variants may be discontinued. Ensure the selected package matches the target PCB footprint and that interface protocols align with system requirements.

Battery Management Selection Notes

Select this component for applications necessitating high-accuracy gas gauging without external microcontrollers. Evaluate thermal management capabilities given the operating temperature limits. Consider the SMBus interface requirements for communication with the host system. Verify support for the specific number of battery cells in the intended pack configuration.

Battery Management Part Context

This part belongs to the BQ20Z75-V160 family of fuel gauges. It serves as a standalone solution for battery management, integrating sensing and calculation functions. The device simplifies design by providing comprehensive battery data through a standard serial interface, reducing the need for complex external processing logic.

Battery Management Replacement Considerations

Check for direct substitutes within the BQ20Z75 family, such as the BQ20Z75DBTR-V160G4 or BQ20Z75DBTR-V180. Verify pin-to-pin compatibility and software/firmware equivalence before substitution. Review change lists for any functional differences between revision levels.