BQ2945SN-C409

Battery Management Overview

The BQ2945SN-C409 is a battery gas gauge IC manufactured by Texas Instruments, housed in a 16-SOIC package. It provides accurate measurement of available charge for NiCd, NiMH, and Li-Ion batteries. The device supports System Management Bus (SMBus) v1.0 data sets and utilizes a two-wire interface for communication. Designed for surface mount installation, it operates within a temperature range of 0°C to 70°C.

Battery Management Feature Summary

• Provides accurate measurement of available charge for various battery chemistries including NiCd, NiMH, and Li-Ion
• Supports SMBus v1.0 data set specifications with a two-wire interface

Battery Management Applications

• Battery management systems requiring state-of-charge monitoring
• Portable electronic devices utilizing NiCd or NiMH batteries
• Li-Ion battery packs needing SMBus-compatible gas gauge integration

Battery Management Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix C409 matches project requirements. Check for RoHS compliance status as indicated in official documentation. Ensure the 16-SOIC package dimensions align with PCB layout constraints. Validate that the operating temperature range meets environmental specifications.

Battery Management Selection Notes

Select this component when an SMBus-compatible gas gauge is required for NiCd, NiMH, or Li-Ion applications. The 16-SOIC package suits surface mount designs. Consider the 0°C to 70°C operating range for environmental suitability. Verify compatibility with existing system management bus protocols before integration.

Battery Management Part Context

This part belongs to the BQ2945 series of battery monitors from Texas Instruments. It functions as a dedicated gas gauge IC designed to monitor battery health and charge levels. The series typically integrates voltage sensing and communication interfaces for system-level battery management.

Battery Management Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.