BQ2002TSNG4

Overview

The BQ2002TSNG4 is a gas gauge IC from Texas Instruments designed for lithium-ion battery packs. It utilizes the Impedance Track algorithm to provide accurate state-of-charge and remaining capacity data. The device features an integrated analog-to-digital converter for monitoring cell voltage, current, and temperature. It communicates via a standard I2C interface with a host processor. The component operates within a specified temperature range suitable for industrial applications.

Feature Summary

• Implements Impedance Track fuel gauging algorithm for high accuracy
• Integrates ADC for simultaneous voltage, current, and temperature sensing
• Supports standard I2C communication protocol
• Includes programmable protection thresholds

Applications

• Lithium-ion battery pack management systems
• Portable medical devices requiring precise energy monitoring
• Industrial equipment with rechargeable power sources
• Consumer electronics utilizing single-cell lithium batteries

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free status as per Texas Instruments documentation. Confirm the package type matches the design requirements. Check for obsolescence notices or lifecycle status on the manufacturer website before finalizing procurement plans.

Selection Notes

Select this component when high accuracy state-of-charge estimation is required for single-cell lithium-ion applications. Ensure the host system supports I2C communication. Verify that the operating temperature range meets the environmental conditions of the target application. Compare against newer generations like the BQ27xxx series for updated feature sets if available.

Part Context

This part belongs to the BQ2000 family of gas gauges. It is designed to replace older discrete solutions by integrating measurement and calculation functions into a single chip. The Impedance Track technology allows for adaptive learning of battery characteristics over time.

Replacement Considerations

Consult Texas Instruments documentation for direct pin-compatible or functionally equivalent replacements. Newer iterations in the BQ27xxx series may offer improved performance but require schematic and software adjustments.