S-8254ABHFT-TB-U

Battery Management Overview

The S-8254ABHFT-TB-U is a battery protection IC designed for 3 or 4 series lithium-ion and lithium-polymer rechargeable batteries. It operates within a power supply voltage range of 2 V to 24 V and utilizes a TSSOP-16 surface-mount package. The device provides high-accuracy overcharge detection at 4.350 V ±25 mV with a release voltage of 4.150 V ±50 mV. Overdischarge detection is set at 2.00 V ±80 mV, releasing at 2.70 V ±100 mV. It features three-stage overcurrent protection with thresholds of 0.30 V ±25 mV, 0.50 V ±100 mV, and a short-circuit detection threshold.

Battery Management Feature Summary

• Integrates high-accuracy voltage detectors for precise monitoring of individual cell states during charge and discharge cycles.
• Implements a three-stage overcurrent protection mechanism to handle varying levels of excessive current flow.
• Includes built-in delay circuits to prevent false triggering caused by transient noise or brief electrical spikes.
• Supports direct connection to external MOSFETs for controlling the charging and discharging paths.

Battery Management Applications

• Protection circuits for 3-series lithium-ion battery packs
• Safety management for 4-series lithium-polymer battery modules
• Portable electronic devices requiring multi-cell battery safety
• Power tools utilizing serial-connected rechargeable battery systems

Battery Management Procurement Notes

Verify the specific suffix 'H' in the part number to confirm the overcharge detection voltage threshold matches the target battery chemistry requirements. Ensure the ordering code corresponds to the correct tape and reel packaging configuration. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and electrical characteristics before finalizing procurement orders.

Battery Management Selection Notes

Select this component when designing protection circuits for 3 or 4 series cells requiring a 4.350 V overcharge threshold. Evaluate the required overcurrent protection levels against the application's peak load currents to ensure the internal detection thresholds are appropriate. Consider the operating temperature range and package thermal performance for the intended environment.

Battery Management Part Context

This IC belongs to the S-8254A series from ABLIC Inc., which is dedicated to protecting serial-connected lithium-ion and lithium-polymer batteries. The series offers various overcharge voltage options to accommodate different cell chemistries. The S-8254ABHFT variant specifically targets applications needing a 4.350 V detection limit, distinguishing it from other series members with lower thresholds.

Battery Management Replacement Considerations

Compatible substitutes within the same family include S-8254AAHFT-TB-U and S-8254AIIFT-TB-U, provided their overcharge detection voltages align with system requirements. Verify that alternative part numbers maintain identical pin configurations and functional specifications to ensure seamless integration without redesigning the printed circuit board layout.