BQ79758QPAPRQ1

Battery Management Overview

The BQ79758QPAPRQ1 is an automotive-grade battery monitor and balancer designed for 18-series lithium-ion or lithium-polymer cell stacks. It integrates high-accuracy voltage measurement, passive cell balancing, and temperature sensing within a single HTQFP-64 package. The device supports functional safety compliance and operates across an extended temperature range from -40°C to +125°C. It features a robust communication interface for integration into vehicle battery management systems.

Battery Management Feature Summary

• Supports monitoring and balancing of up to 18 series-connected battery cells
• Integrated passive cell balancing capability with configurable current paths
• High-precision voltage measurement for accurate state-of-charge estimation
• Functional safety compliant design suitable for automotive applications

Battery Management Applications

• Electric vehicle traction battery packs
• Hybrid electric vehicle energy storage systems
• Automotive auxiliary battery monitoring
• Industrial battery management systems requiring automotive reliability

Battery Management Procurement Notes

Verify the complete part number including the QPA suffix to ensure automotive qualification and specific tape-and-reel packaging configuration. Confirm that the HTQFP-64 package variant matches your PCB footprint requirements. Check for any recent product change notifications regarding pinout or electrical characteristics before finalizing procurement specifications.

Battery Management Selection Notes

Select this component when designing systems requiring monitoring of 18-cell stacks with integrated balancing. Ensure the application environment stays within the specified -40°C to +125°C operating range. Verify that the host microcontroller supports the required communication protocol. Consider thermal management solutions given the passive balancing dissipation capabilities in high-current scenarios.

Battery Management Part Context

This device belongs to Texas Instruments' BQ797xx family of automotive battery monitors. It complements other components like the TPS1HB08AQPWPRQ1 smart high-side switches for power distribution. The BQ79758 focuses specifically on multi-cell stack monitoring rather than single-cell protection or charging management found in other TI battery products.

Battery Management Replacement Considerations

The BQ79712SBQPHPRQ1 serves as a substitute for 12-cell configurations. Verify pin compatibility and software driver adjustments when migrating between different cell count variants within the same family.