X3100V28T2

Overview

The X3100V28T2 is a protection and monitor integrated circuit designed for battery packs consisting of four series Lithium-Ion cells. It provides internal over-charge, over-discharge, and overcurrent protection circuitry, along with an internal EEPROM memory, voltage regulator, and drive circuitry for external FET devices controlling cell charge, discharge, and balancing. Protection thresholds are stored in non-volatile memory and selected via a 3MHz SPI serial interface. Detection and time-out delays are individually adjustable using external capacitors.

Feature Summary

• Software-selectable protection levels and variable protect detection/release times
• Integrated FET drive circuitry for external control
• Cell voltage and current monitoring capabilities

Applications

• Battery pack protection systems
• Lithium-Ion battery management
• Cell balancing applications

Procurement Notes

Verify the manufacturer lineage, as Xicor was acquired by Intersil, which later became part of Renesas. Confirm that the specific suffix 'V28T2' corresponds to the correct package type (28 Ld TSSOP) and temperature grade. Ensure compatibility with the required SPI interface speed and external component values for delay settings.

Selection Notes

Select this component for applications requiring precise software-configurable protection thresholds for four-cell Li-ion packs. The device is suitable where external gas gauge functionality is implemented via a microcontroller. Consider the need for external capacitors to set detection delays and the availability of a 3MHz SPI interface on the host controller.

Part Context

This component belongs to the X3100 family of battery protection ICs. The X3100 variant is specifically designed for four-series cell configurations, while the X3101 is intended for three-cell applications. Both share similar features including internal EEPROM, voltage regulation, and FET drive capabilities, differing primarily in their cell count support.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.