BQ7791500PWT

Battery Management Overview

The BQ7791500PWT is a stackable ultra-low power primary battery protector designed for 3-series to 5-series lithium-ion cell configurations. It operates within a supply voltage range of 3 V to 25 V and supports an output voltage of 4.2 V. The device features an extremely low operating supply current of 8 uA, ensuring minimal impact on battery life during standby. It is housed in a TSSOP-24 package suitable for surface mount installation. The component functions reliably across an extended temperature range from -40 C to +85 C.

Battery Management Feature Summary

• Stackable architecture enabling multi-cell protection without external logic
• Ultra-low quiescent current design for extended battery longevity
• Autonomous cell balancing functionality integrated into the protection circuit

Battery Management Applications

• Portable electronic devices requiring long battery life
• Medical equipment with strict power consumption constraints
• Industrial sensor networks utilizing multiple series cells

Battery Management Procurement Notes

Verify the specific suffix PWT indicates the tape and reel packaging format when ordering. Confirm that the 8 uA supply current specification aligns with your system's standby requirements. Ensure the TSSOP-24 footprint matches your PCB layout guidelines. Check for any recent product change notifications regarding manufacturing updates.

Battery Management Selection Notes

Select this component when designing systems with three to five series-connected lithium-ion cells. The stackable feature simplifies board space by eliminating external control logic. Consider the 8 uA current draw critical for applications where self-discharge must be minimized. Verify compatibility with the target cell chemistry and required protection thresholds.

Battery Management Part Context

This part belongs to the BQ77915 family of battery protectors from Texas Instruments. The family focuses on ultra-low power consumption and stackable designs for multi-cell stacks. Other variants in the series may differ in package type or specific electrical characteristics while maintaining the core protection and balancing capabilities.

Battery Management Replacement Considerations

Direct substitutes within the same family include other BQ77915 variants with different suffixes indicating package or temperature variations. Cross-family replacements require careful evaluation of pin compatibility and electrical specifications.