3 or 4 Cell Li-Ion Battery Protection and Monitor IC

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.

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 4k-bit EEPROM

• Flexible Power Management with 1µA Sleep Mode

• Cell Balancing Control

• Pb-Free Available (RoHS Compliant)

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