DESCRIPTION
The X3100 is a protection and monitor IC for use in battery packs consisting of 4 series Lithium-Ion battery cells. The X3101 is designed to work in 3 cell applications. Both devices provide internal over charge, over-discharge, and over-current 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. 

FEATURE
• 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