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X3100

Xicor
Part Number X3100
Manufacturer Xicor
Description 3 or 4 Cell Li-Ion Battery Protection and Monitor IC
Published Apr 16, 2005
Detailed Description APPLICATION NOTE A V A I L A B L E 3 or 4 Cell Li-Ion BATTERY PACKS Preliminary Information Preliminary X3100/X3101 F...
Datasheet PDF File X3100 PDF File

X3100
X3100

Overview
APPLICATION NOTE A V A I L A B L E 3 or 4 Cell Li-Ion BATTERY PACKS Preliminary Information Preliminary X3100/X3101 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 4 cell / 3 cell 3 or 4 Cell Li-Ion Battery Protection and Monitor IC • 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 Using an internal analog multiplexer, the X3100 or X3101 allow battery parameters such as cell voltage and current (using a sense resistor) to be monitored externally by a separate microcontroller with A/D converter.
Software on this microcontroller implements gas gauge and cell balancing functionality in software.
The X3100 and X3101 contain a current sense amplifier.
Selectable gains of 10, 25, 80 and 160 allow an external 10 bit A/D converter to achieve better resolution than a more expensive 14 bit converter.
An internal 4kbit EEPROM memory featuring IDLock™, allows the designer to partition and “lock in” written battery cell/pack data.
The X3100 and X3101 are each housed in a 28 Pin TSSOP package.
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 overcharge, 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...


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