BQ2084DBTR

Battery Management Overview

The BQ2084DBTR is a System Management Bus (SMBus) compliant gas gauge designed for lithium-ion and lithium-polymer battery packs. It operates within a voltage range of 0 V to 25 V and supports output currents up to 100 mA. The device utilizes a 38-pin TSSOP package and functions across an operating temperature range of -20°C to +85°C. It integrates a microprocessor, flash memory, and high-resolution converters for precise monitoring of voltage, current, and temperature without requiring external oscillators or EEPROMs.

Battery Management Feature Summary

• Supports SBS v1.1 compliance for intelligent battery communication
• Integrates self-correcting integral converter for accurate coulomb counting
• Includes built-in flash memory for storing battery model parameters
• Features integrated LED drivers for capacity indication

Battery Management Applications

• Laptop computers
• Medical equipment
• Portable instruments

Battery Management Procurement Notes

Verify the specific revision suffix (e.g., V143) against the design requirements, as different revisions may have minor functional or parameter variations. Confirm that the 38-TSSOP package dimensions match the PCB footprint. Ensure the selected variant is compatible with the intended analog front-end protection IC, such as the BQ29312, for full system functionality.

Battery Management Selection Notes

Select this component when designing smart battery systems requiring SMBus v1.1 compatibility. It is suitable for applications needing precise state-of-charge tracking in lithium-based chemistries. Consider the integration of internal flash and timebase to reduce external component count. Verify thermal performance within the specified operating temperature range for the target enclosure.

Battery Management Part Context

This part belongs to the BQ2084 series of gas gauges from Texas Instruments. It is engineered to work in conjunction with analog front-end protection ICs like the BQ29312. The series provides a complete solution for monitoring rechargeable batteries by measuring key parameters and communicating them via the SMBus protocol to the host system controller.

Battery Management Replacement Considerations

Check for direct replacements within the BQ2084 family, such as the BQ2084-V143. Review official change lists for any pinout or functional updates between revisions before substituting.