BQ296900TDSGR

Battery Management Overview

The BQ296900TDSGR is a battery protection IC from Texas Instruments designed for 2-series, 3-series, and 4-series lithium-ion battery packs. It provides high-accuracy overvoltage protection (OVP) with factory-programmed thresholds ranging from 3.6V to 5.2V and ±12mV accuracy. The device includes an integrated Low Dropout Regulator (LDO) output capable of delivering up to 3mA. It operates within a supply voltage range of 5.5V to 8V and supports Li-FePO4 and Li-Ion chemistries. Packaged in an 8-pin WSON with an exposed pad, it functions between -40°C and +125°C.

Battery Management Feature Summary

• Provides overvoltage protection for 2-, 3-, and 4-series cell configurations
• Features factory-programmed OVP thresholds with high precision
• Integrates an LDO output for auxiliary power supply

Battery Management Applications

• Portable electronic devices requiring multi-cell battery protection
• Power tools utilizing series-connected lithium-ion batteries
• Medical equipment with strict safety requirements for battery management

Battery Management Procurement Notes

Verify the specific factory-programmed overvoltage threshold required for your application, as this parameter is fixed at the time of manufacture and cannot be adjusted post-production. Confirm compatibility with your target battery chemistry, specifically ensuring support for either Li-Ion or Li-FePO4 types. Ensure the PCB layout accommodates the 8-pin WSON package dimensions and thermal pad requirements for proper heat dissipation during operation.

Battery Management Selection Notes

Select this component when precise overvoltage monitoring is critical for multi-cell battery stacks. The integrated LDO simplifies design by providing a stable auxiliary voltage source, reducing external component count. Consider the ±12mV accuracy specification for applications demanding tight voltage margins. Evaluate the operating temperature range to ensure suitability for extreme environmental conditions encountered in industrial or automotive settings.

Battery Management Part Context

This part belongs to the BQ2969T family of overvoltage and overtemperature protectors. These ICs are engineered for high-accuracy protection in series-connected lithium battery systems. The family offers various factory-programmed options to cater to different cell voltages and chemistry types, ensuring reliable performance across diverse portable electronics and industrial applications without requiring complex external circuitry.

Battery Management Replacement Considerations

Check for other variants within the BQ2969T series that may offer different factory-programmed OVP thresholds or LDO current capabilities. Verify pin-to-pin compatibility if substituting with similar packages from other manufacturers. Ensure the replacement part supports the same battery chemistry and series configuration requirements.