BQ2004SNTRG4

Overview

The BQ2004SNTRG4 is a gas gauge IC designed for single-cell lithium-ion and lithium-polymer battery packs. It utilizes the SmartBatt protocol to provide accurate state-of-charge (SOC) information via an SMBus interface. The device integrates a high-resolution ADC for voltage and current sensing, enabling precise coulomb counting. It supports programmable parameters for battery characterization, including capacity, impedance, and temperature coefficients. The component operates within a wide supply voltage range and includes hardware protection features against over-voltage and under-voltage conditions.

Feature Summary

• Implements SmartBatt protocol for standardized communication with host systems
• Integrates high-resolution analog-to-digital converters for precise voltage and current measurement
• Supports programmable battery characterization parameters for customized pack performance
• Provides hardware-based protection against critical battery fault conditions

Applications

• Single-cell lithium-ion battery packs in portable electronics
• Lithium-polymer battery management in medical devices
• Uninterruptible power supplies (UPS) requiring accurate SOC reporting
• Industrial equipment with single-cell backup power requirements

Procurement Notes

Verify that the specific suffix 'TRG4' corresponds to the tape-and-reel packaging variant and lead-free compliance status as defined by Texas Instruments documentation. Confirm that the operating temperature range and package type match the design requirements before procurement. Ensure compatibility with the target host controller's SMBus implementation.

Selection Notes

Select this component when a single-cell lithium chemistry requires accurate state-of-charge monitoring via standard protocols. It is suitable for applications needing integrated sensing without external amplifiers. Consider alternative models if multi-cell support or different communication interfaces are required. Verify that the programmable parameter storage meets the specific battery characterization needs of the application.

Part Context

This part belongs to Texas Instruments' BQ20xx series of gas gauge controllers. These devices are engineered for smart battery applications requiring reliable state-of-charge data. The series supports various chemistries through software configuration. The BQ2004 specifically targets single-cell configurations with integrated sensing capabilities.

Replacement Considerations

Check for direct pin-compatible alternatives within the BQ20xx family. Verify functional equivalence regarding protocol support and sensing accuracy. Ensure any substitute maintains compatibility with existing firmware and battery characterization data.