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X3101VZ Datasheet(PDF) 1 Page - Intersil Corporation |
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X3101VZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 41 page 1 ® FN8110.1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005-2007. All Rights Reserved All other trademarks mentioned are the property of their respective owners. X3100, X3101 4 Cell/3 Cell 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. 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 time-out delays can also be individually varied using external capacitors. 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 4k-bit 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 Ld TSSOP package. 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 Functional Diagram PROTECTION CIRCUIT TIMING CONTROL AND CONFIGURA TION OVT UVT OCT FET CONTRO L CIRCUITRY 4k-BIT EEPROM ANALOG- MUX SPI I/F 5VDC REGULATOR INTERNAL VOLTAGE REGULATOR POWER-ON RESET AND STATUS REGISTER VSS VCELL1 CB1 VCC RGP OVP/LMON UVP/OCP AS0 AS1 AS2 AO S0 SCK CS SI CB3 CB2 CB4 VCELL2 VCELL3 VCELL4/VSS PROTECTION SAMPLE RATE TIMER RGC RGO CONFIGURATION REGISTER OVERCURRENT PROTECTION AND CURRENT SENSE VCS1 VCS2 OVERCHARGE OVERDISCHARGE PROTECTION SENSE CIRCUITS CONTROL REGISTER Data Sheet January 3, 2008 NOT RECO MME NDED FOR NEW DESI GNS POSS IBLE SUBS TITU TE P ROD UCT ISL92 08 |
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