S-8244AATFM-CETT2U

Battery Management Overview

The S-8244AATFM-CETT2U is a secondary protection IC designed for lithium-ion battery packs consisting of one to four serial cells. It incorporates high-precision voltage detectors with an accuracy of ±25 mV at +25°C and ±50 mV across the industrial temperature range. The device supports overcharge detection voltages from 3.700 V to 4.550 V in 5 mV steps. It features a wide operating voltage range of 3.6 V to 24 V and low current consumption, typically 3.0 μA max per cell at 3.5 V. The absolute maximum withstand voltage is 26 V.

Battery Management Feature Summary

• Provides secondary protection for 1-to-4 series lithium-ion battery packs
• Integrates high-precision voltage detector circuits with selectable hysteresis options
• Allows external setting of delay times during detection via capacitors
• Supports multiple output logic forms including CMOS and open drain configurations

Battery Management Applications

• Secondary protection circuits for lithium-ion rechargeable battery packs
• Portable electronic devices requiring multi-cell battery management
• Power tools and equipment utilizing serial-connected lithium-ion cells

Battery Management Procurement Notes

Verify the specific suffix CETT2U against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required overcharge detection voltage and hysteresis settings defined in the datasheet. Confirm that the selected output logic form matches the system design requirements before procurement.

Battery Management Selection Notes

Select this component when secondary protection for up to four serial lithium-ion cells is required. Consider the ±25 mV accuracy at room temperature and the available hysteresis types. Evaluate the low current consumption characteristics relative to the battery pack's standby requirements. Verify that the operating voltage range covers the expected cell voltage conditions.

Battery Management Part Context

The S-8244 Series is manufactured by ABLIC Inc., formerly Seiko Instruments. This series is specifically engineered for secondary protection applications in lithium-ion battery systems. The part number indicates specific configuration parameters such as detection voltage and output type, distinguishing it from other variants within the broader S-8244 family.

Battery Management Replacement Considerations

Direct substitutes must belong to the S-8244 series with identical detection voltage and hysteresis specifications. Verify pin compatibility and output logic form before substitution. Cross-reference with ABLIC or distributor databases for confirmed equivalent part numbers.