S-8254AAOFT-TB-G

Battery Management Overview

The S-8254AAOFT-TB-G is a battery protection IC designed for 3-series or 4-series lithium-ion and lithium polymer rechargeable batteries. It integrates high-accuracy voltage detectors and delay circuits to prevent overcharge, overdischarge, and overcurrent conditions. The device operates within a power supply voltage range of 2 V to 24 V and utilizes a TSSOP-16 surface-mount package. Key electrical parameters include an overcharge detection voltage of 4.300 V with ±25 mV accuracy and an overdischarge detection voltage of 2.40 V with ±80 mV accuracy.

Battery Management Feature Summary

• Provides three-level overcurrent protection mechanisms to handle varying fault intensities.
• Ensures cell balance in multi-cell packs through individual cell voltage monitoring.
• Supports switching between 3-cell and 4-cell configurations via the SEL pin.

Battery Management Applications

• Protection circuits for 3-series or 4-series lithium-ion battery packs
• Safety management systems for lithium polymer battery modules
• Portable electronic devices requiring high-reliability battery protection

Battery Management Procurement Notes

Verify the specific overcharge and overdischarge thresholds against the official datasheet before procurement, as these values are fixed by the part suffix. Confirm that the TSSOP-16 package dimensions match your PCB footprint requirements. Ensure compatibility with the target battery chemistry and series configuration.

Battery Management Selection Notes

Select this component when precise voltage monitoring is required for multi-cell lithium battery assemblies. The fixed detection voltages eliminate the need for external reference components, simplifying the design. Consider the low operating current consumption for applications where standby power efficiency is critical.

Battery Management Part Context

This IC belongs to the S-8254 series from ABLIC Inc., specialized for protecting serial-connected lithium batteries. The series is characterized by its ability to monitor individual cell voltages and manage discharge paths via external MOSFETs, ensuring safety compliance in portable energy storage applications.

Battery Management Replacement Considerations

Other variants within the S-8254A series may serve as substitutes if their detection voltage thresholds align with the system requirements. Verify package compatibility and functional equivalence regarding the SEL pin configuration before implementation.

Battery Management FAQ

How does the S-8254AAOFT-TB-G handle short-circuit conditions?

It employs a third-level overcurrent detection mechanism specifically designed to trigger protection during severe overcurrent or short-circuit events, disconnecting the load path.

What is the function of the SEL pin on this IC?

The SEL pin allows the user to switch the protection circuit's configuration between 3-series and 4-series cell packs, adapting the monitoring logic to the specific battery assembly.