S-8254AAJFT-TB-G

Battery Management Overview

The S-8254AAJFT-TB-G is a battery protection IC designed for 3-series or 4-series lithium-ion and lithium-polymer rechargeable batteries. It features high-accuracy voltage detection with an overcharge detection voltage of 4.350V ±0.025V and an overcharge release voltage of 4.150V ±0.050V. The device supports overdischarge detection at 2.00V ±0.080V and release at 2.70V ±0.100V. It includes three-level overcurrent protection, with the first level set at 0.30V ±0.025V. Operating within a supply voltage range of 2V to 24V, it utilizes a TSSOP-16 package.

Battery Management Feature Summary

• Provides high-accuracy voltage monitoring for individual cells in series-connected lithium-ion and lithium-polymer battery packs.
• Implements a three-stage overcurrent protection mechanism to handle varying levels of fault currents and short circuits.
• Enables switching between 3-cell and 4-cell configurations through a dedicated SEL pin interface.

Battery Management Applications

• Protection circuits for portable electronic devices using multi-cell lithium batteries
• Battery management systems in consumer electronics requiring precise cell balancing
• Power backup units utilizing serial lithium polymer battery arrays

Battery Management Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact threshold voltages and delay times. Ensure the ordering information matches the required overcharge and overdischarge parameters for your specific battery chemistry. Confirm package type and reel specifications directly with authorized distributors to avoid counterfeit components.

Battery Management Selection Notes

Select this component when designing protection circuits for 3S or 4S lithium-based battery packs requiring high voltage detection accuracy. Consider the TSSOP-16 package constraints and operating temperature range of -40°C to +85°C. Evaluate the need for the specific 4.35V overcharge threshold relative to the target battery cell specifications.

Battery Management Part Context

This part belongs to the S-8254 series from ABLIC Inc., specialized for protecting serially connected lithium-ion and lithium-polymer batteries. The series integrates voltage detectors and delay circuits to prevent overcharging, overdischarging, and overcurrent conditions. It is engineered for use in portable devices where space efficiency and reliability are critical.

Battery Management FAQ

How does the S-8254AAJFT-TB-G handle overcurrent faults?

It employs a three-level overcurrent protection system. The first level detects currents corresponding to a voltage drop of 0.30V ±0.025V across the external FETs, providing graded response capabilities for different fault severities.

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

The SEL pin allows the user to switch the protection circuit configuration between 3-series and 4-series cell applications, enabling flexibility in battery pack design without changing the IC.