BQ7790500PW

Battery Management Overview

The BQ7790500PW is a stackable battery protection IC designed for 3- to 5-series lithium-ion and lithium-phosphate packs. It operates within a supply voltage range of 25 V and supports output voltages up to 4.2 V. The device features ultra-low quiescent current of 6 uA and functions across an extended temperature range from -40 C to +85 C. Packaged in a TSSOP-20 surface-mount format, it integrates voltage, current, and temperature monitoring with open-wire detection capabilities.

Battery Management Feature Summary

• Stackable architecture supporting multiple cell series configurations
• Integrated autonomous cell balancing functionality
• Comprehensive protection against over-voltage, under-voltage, over-current, and temperature anomalies
• Open-wire detection capability for enhanced safety diagnostics

Battery Management Applications

• Portable electronic devices requiring multi-cell battery management
• Power tool battery packs utilizing lithium-ion chemistry
• Medical equipment battery systems demanding high reliability
• Uninterruptible power supply (UPS) backup modules

Battery Management Procurement Notes

Verify the specific suffix 'PW' confirms the TSSOP-20 package variant during sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the required 3- to 5-series stack configuration. Validate thermal performance specifications against the intended operating environment limits.

Battery Management Selection Notes

Select this component for applications requiring low standby power consumption in multi-cell lithium batteries. The stackable design facilitates scalability for higher voltage packs without complex external logic. Consider the TSSOP-20 footprint constraints during PCB layout planning. Evaluate the need for open-wire detection features based on specific safety requirements.

Battery Management Part Context

This part belongs to the BQ77905 family of ultra-low-power primary protectors. It complements similar models like the BQ7790400PWR by offering support for up to five series cells. The family emphasizes minimal quiescent current draw to maximize battery life in portable applications while maintaining robust protection mechanisms.

Battery Management Replacement Considerations

The BQ7790500PWR serves as a reel-based alternative to the tube-packaged PW variant. Verify pinout compatibility and package dimensions before substitution. Ensure functional equivalence regarding stackability and protection thresholds.