BQ29443DRBR

Battery Management Overview

The BQ29443DRBR is a voltage protection IC designed for two, three, or four-cell lithium-ion battery packs. It operates within a supply voltage range of 4 V to 25 V and features a fixed detection threshold of 4.50 V. The device consumes less than 2 μA in standby mode and includes an external capacitor-controlled delay timer. It is housed in an 8-pin VSON (DRB) package with dimensions of 3 mm x 3 mm.

Battery Management Feature Summary

• Provides secondary overvoltage protection for multi-cell lithium-ion battery configurations
• Utilizes an external capacitor to set the discharge delay timer duration
• Maintains ultra-low quiescent current consumption during operation

Battery Management Applications

• Secondary protection circuits for portable electronic devices
• Battery management systems in consumer electronics
• Protection modules for rechargeable battery packs

Battery Management Procurement Notes

Verify the specific suffix DRBR against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration. Ensure compatibility with the required operating temperature range of -40°C to +85°C. Confirm RoHS compliance status through the latest production data before integration into designs.

Battery Management Selection Notes

Select this component when fixed 4.50 V overvoltage protection is required for series-connected lithium-ion cells. The device is suitable for applications demanding low standby power consumption. Consider the external capacitor requirement for timing adjustments when designing the protection circuit layout.

Battery Management Part Context

This part belongs to the BQ2944x family of battery protection ICs from Texas Instruments. It serves as a secondary protection solution complementing primary battery management controllers. The VSON package offers a compact footprint suitable for space-constrained mobile and portable applications.

Battery Management Replacement Considerations

The BQ29441DRBT is a related variant within the same product family offering similar protection functions. Verify pinout compatibility and threshold voltage specifications before substitution.