The X3102 is a protection and monitor IC for use in battery packs consisting of 3 series Lithium-Ion battery cells. The device provides internal over-charge, over-discharge, and overcurrent protection circuitry, internal EEPROM memory, an internal voltage regulator, and internal drive circuitry for external FET devices that control cell charge, discharge, and cell voltage balancing.

Over-charge, over-discharge, and overcurrent thresholds reside in an internal EEPROM memory register and are selected independently via software using a 3MHz SPI serial interface. Detection and time-out delays can also be individually varied using external capacitors.

Features

• Software Selectable Protection Levels and Variable Protect Detection/Release Times

• Integrated FET Drive Circuitry

• Cell Voltage and Current Monitoring

• 0.5% Accurate Voltage Regulator

• Integrated 4kbit EEPROM

• Flexible Power Management with 1µA Sleep Mode

• Cell Balancing Control

Benefit

• Optimize protection for chosen cells to allow maximum use of pack capacity.

• Reduce component count and cost

• Simplify implementation of gas gauge

• Accurate voltage and current measurements

• Record battery history to optimize gas gauge, track pack failures and monitor system use

• Reduce power to extend battery life

• Increase battery capacity and improve cycle life battery life