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X3100 Dataheets PDF



Part Number X3100
Manufacturers Xicor
Logo Xicor
Description 3 or 4 Cell Li-Ion Battery Protection and Monitor IC
Datasheet X3100 DatasheetX3100 Datasheet (PDF)

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 • Opt.

  X3100   X3100



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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 charge, discharge, and cell voltage balancing. Over-charge, over-discharge, and over-current thresholds reside in an internal EEPROM memory register and are selected independently via software using a 3MHz SPI serial interface. Detection and timeout delays can also be individually varied using external capacitors. FUNCTIONAL DIAGRAM VCC RGP RGC RGO UVP/OCP OVP/LMON AS0 AS1 AS2 AO VCELL1 CB1 VCELL2 CB2 VCELL3 CB3 VCELL4/VSS CB4 Over-charge Over-discharge Protection Sense Circuits Protection Sample Rate Timer 5VDC Regulator Internal Voltage Regulator Power On reset & Status Register FET Control Circuitry Analog MUX 4 kbit EEPROM Over-current Protection & Current Sense Protection Circuit Timing Control & Configuration OVT UVT OCT Configuration Register Control Register S0 SPI I/F SCK CS SI VSS VCS1 VCS2 REV 1.1.8 12/10/02 www.xicor.com Characteristics subject to change without notice. 1 of 40 X3100/X3101 – Preliminary Information PRINCIPLES OF OPERATION The X3100 and X310.


X28LC513 X3100 X3101


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