BQ2005STRG4

Overview

The BQ2005STRG4 is a gas gauge IC designed for battery pack monitoring. It features an integrated analog-to-digital converter and digital signal processor to calculate state of charge, remaining capacity, and cycle count. The device supports single-cell lithium-ion and lithium-polymer chemistries with a supply voltage range of 1.6V to 3.6V. It utilizes an I2C-compatible interface for communication with host processors. The component operates within a temperature range of -40°C to +85°C and is available in a 16-pin TSSOP package.

Feature Summary

• Integrated gas gauge algorithm for accurate state of charge calculation
• Supports multiple battery chemistries including Li-ion and Li-Po
• I2C-compatible serial interface for system communication

Applications

• Laptop computer battery packs
• Portable medical devices
• Handheld instrumentation

Procurement Notes

Verify the specific ordering suffix 'G4' indicates compliance with RoHS standards and lead-free manufacturing processes as defined by Texas Instruments. Confirm that the package marking and pinout match the 16-pin TSSOP specification. Ensure the procurement source provides valid traceability documentation for automotive or industrial grade components if required by the application design.

Selection Notes

Select this component when a complete gas gauge solution with integrated sensing and processing is required. It eliminates the need for external microcontrollers for basic battery management tasks. Consider the I2C interface compatibility with the target host system. Evaluate the operating temperature range against the environmental conditions of the final product enclosure.

Part Context

This part belongs to the BQ200x family of gas gauge ICs from Texas Instruments. It serves as a dedicated battery management solution for portable electronics. The family includes variants with different packages and temperature ratings. The BQ2005 specifically targets applications requiring precise capacity tracking without complex external circuitry.

Replacement Considerations

Direct replacements include the BQ2005M and BQ2005P, which offer alternative package options such as MSOP and SOIC. Verify pin-to-pin compatibility and software register compatibility before substitution. Check for updated revisions in the BQ200x series that may offer improved accuracy or additional features.