1 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas inc. 2012. all rights reserved intersil is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners. multi-cell li-ion battery manager ISL94212 the ISL94212 is a multi-cell li-ion battery manager ic that supervises up to 12 series connected cells. the part performs accurate monitoring, cell balancing and extensive system diagnostics functions. thre e cell balancing modes are provided: manual mode, timed mode and an auto-balance mode which terminates balancing functions when a (host microcontroller specified) charge transfer value has been met. the ISL94212 communicates to a host microcontroller via an spi interface and to other ISL94212s using a robust, proprietary, two-wire daisy chain system. the ISL94212 is offered in a 64 ld tqfp package and is specified over an industrial temperature range of -40c to +85c. applications ? hybrid, electric vehicle battery packs ? battery backup systems ?e-moto; e-bike features ? up to 12-cell voltage monitors, support li-ion coo 2 , li-ion mn 2 o 4 , and li-ion fepo4 chemistries ? cell voltage measurement accuracy 10mv ? cell voltage scan rate of 19.5s per cell (234s to scan 12 cells) ? up to four external temperature inputs ? robust daisy chain communications system ? integrated system diagnostics for all key internal functions ? hardwired and communicatio ns based fault notification ? integrated watchdog shuts down device if communication is lost ? 7a shutdown current: enable = v ss ?2mbps spi related literature ? evaluation board applic ation note: ISL94212evz figure 1. typical application ISL94212 dhi2 dlo2 sclk dout din cs host data ready fault to other devices (optional) en monitor board (master or stand-alone) micro ISL94212 dhi1 dlo1 monitor board (daisy chain - optional) dhi2 dlo2 december 14, 2012 fn7938.0
ISL94212 2 intersil products are manufactured, assembled and tested utilizing iso9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn7938.0 december 14, 2012 for additional products, see www.intersil.com/product_tree
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