BQ2040SN-C408

Battery Management Overview

The BQ2040SN-C408 is a multi-chemistry smart battery system gas gauge compliant with SBS 1.0 standards, manufactured by Texas Instruments. It operates within a temperature range of 0°C to +70°C and supports battery capacities from 800 mAh to 10,000 mAh. The device utilizes an NSOIC-16 surface-mount package and functions at a working supply voltage of 4.25 V. It integrates four LED drivers for status indication and employs a two-wire SMBus interface for data communication.

Battery Management Feature Summary

• Provides accurate measurement of available charge across NiCd, NiMH, and Li-Ion chemistries
• Supports Smart Battery System v1.0 data sets via a two-wire interface
• Integrates four LED drivers for visual battery status indication

Battery Management Applications

• Portable electronic devices requiring multi-chemistry battery support
• Smart battery packs utilizing SBS 1.0 protocols
• Equipment monitoring NiCd, NiMH, or Li-Ion cell arrays

Battery Management Procurement Notes

Verify the specific suffix C408 against official Texas Instruments documentation to confirm pinout and electrical characteristics. Ensure compatibility with the target host controller's SMBus implementation. Confirm that the operating temperature range meets the application requirements. Check for RoHS compliance status in the latest datasheet revision before finalizing procurement decisions.

Battery Management Selection Notes

Select this component when designing systems requiring precise state-of-charge estimation for multiple battery chemistries without external microcontrollers. The integrated LED drivers simplify user interface design. Ensure the PCB layout accommodates the NSOIC-16 package dimensions. Verify that the host system can support the required two-wire communication protocol for reliable data exchange.

Battery Management Part Context

This part belongs to the BQ2040 family of gas gauges designed for smart battery applications. It serves as a standalone solution for monitoring battery health and remaining capacity. The device replaces discrete sensing circuits by integrating necessary analog-to-digital conversion and algorithmic processing within a single IC package.

Battery Management Replacement Considerations

Consult Texas Instruments documentation for direct replacements. Verify pin compatibility and software register mapping if substituting with other BQ series gas gauges.