Multi-Cell Li-ion Battery Pack Analog Front-EndThe ISL94201 is an analog front end for a microcontroller ina multi-cell Li-ion battery pack. The ISL94201 supportsbattery pack configurations consisting of 4-cells to 7-cells inseries and 1 or more cells in parallel. The ISL94201 providesan internal 3.3V voltage regulator, and cell voltage monitorlevel shifters.Using an internal analog multiplexer the ISL94201 providesmonitoring of each cell voltage plus internal and externaltemperature by a separate microcontroller with an A/Dconverter. Software on this microcontroller implements allbattery pack control functionality.
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