BQ7790502PW

Battery Management Overview

The BQ7790502PW is a battery protection IC designed for 3- to 5-series lithium-ion and lithium-phosphate packs. It monitors voltage, current, temperature, and open wire conditions with ultra-low quiescent current of 500nA. The device operates within a supply voltage range of 3V to 25V and supports an operating temperature range from -40°C to +85°C. Packaged in a 20-pin TSSOP, it provides comprehensive cell protection for portable applications.

Battery Management Feature Summary

• Monitors cell voltage, pack current, temperature, and open wire status
• Ultra-low quiescent current consumption of 500nA
• Stackable architecture supporting 3 to 5 series cells

Battery Management Applications

• Portable consumer electronics
• Power tools
• Medical devices

Battery Management Procurement Notes

Verify the package type matches the design requirements, as the suffix 'PW' indicates a TSSOP-20 tube. Confirm that the specific voltage thresholds and delay times align with the target battery chemistry. Ensure the PCB footprint corresponds to the 20-TSSOP dimensions provided in the official datasheet.

Battery Management Selection Notes

Select this component when ultra-low standby power is critical for battery life extension. It is suitable for applications requiring protection against over-voltage, under-voltage, over-current, and short-circuit conditions. Consider the stackable feature if designing multi-cell systems without complex communication lines.

Battery Management Part Context

This part belongs to the BQ7790x family of battery protectors from Texas Instruments. It offers a cost-effective solution for basic cell protection needs compared to more complex fuel gauge integrated circuits. The device focuses on safety monitoring rather than state-of-charge estimation.

Battery Management Replacement Considerations

The BQ7790400PWR is a related variant within the same family but supports only 3-4 series cells. Verify cell count compatibility before substitution. Other members of the BQ7790x series may offer different pin configurations or additional features.