X3100V28

Overview

The Intersil X3100V28 is a protection and monitor integrated circuit designed for battery packs consisting of four series-connected Lithium-Ion cells. It provides internal over-charge, over-discharge, and overcurrent protection with thresholds stored in internal EEPROM memory. The device features an internal voltage regulator and drive circuitry for external FETs to control cell charge, discharge, and balancing. It includes a current sense amplifier with selectable gains and allows monitoring of cell voltage and current via an analog multiplexer.

Feature Summary

• Software-selectable protection levels and variable detection times via SPI interface
• Integrated FET drive circuitry for external power switches
• Internal analog multiplexer for external microcontroller monitoring of cell parameters
• Current sense amplifier with multiple selectable gain settings

Applications

• Battery pack protection for 4-series Lithium-Ion configurations
• Cell voltage and current monitoring systems
• Battery management systems requiring software-configurable safety thresholds

Procurement Notes

Verify the specific suffix 'V28' against official Intersil or Renesas documentation to confirm package type and temperature range. Ensure compatibility with existing firmware for SPI communication and EEPROM configuration. Check for product lifecycle status as Intersil products may have transitioned to Renesas Electronics.

Selection Notes

Select this component for applications requiring precise, software-defined protection thresholds for 4-cell Li-ion packs. Consider the need for external FETs and a microcontroller with an A/D converter for gas gauge implementation. Evaluate if the 28-lead TSSOP package fits the design constraints.

Part Context

The X3100 belongs to a family of battery protection ICs from Intersil, which was acquired by Renesas Electronics. The X3101 variant serves similar functions but is designed for 3-cell applications. These devices integrate protection, monitoring, and balancing control capabilities into a single chip.

Replacement Considerations

Consult Renesas Electronics legacy documents for direct substitutes. Verify pinout and functional compatibility before replacing Intersil-branded components with newer equivalents.