data brief for further information contact your local stmicroelectronics sales office. november 2011 doc id 018791 rev 1 1/4 4 STEVAL-ISB013V1 battery monitor demonstratio n board with alarm output for gas gauge applications based on the stc3105 features accurate battery voltage measurement coulomb counter to monitor the battery state- of-charge (soc) internal 32.768 khz time base low-battery alarm output with programmable soc and voltage thresholds relaxation timer to track load condition (user- programmable load current threshold) i 2 c interface for battery monitoring and device control low power consumption: ? 100 a in active operating conditions ? 50 a in power saving operating conditions ? 2 a in standby mode ? 1 a in power-down mode rohs compliant description the STEVAL-ISB013V1 is a demonstration board based on the stc3105 battery monitor ic. the application monitors the voltage and current of a battery and includes a coulomb counter to keep track of the charge/discharge status. an alarm output signals a low state-of-charge (soc) condition and/or low battery voltage. in addition, a relaxation register begins counting when the gas gauge is in a specified light-load condition, indicating when an ocv (open circuit voltage) measurement should be made for soc correction. STEVAL-ISB013V1 www.st.com
schematic diagram STEVAL-ISB013V1 2/4 doc id 018791 rev 1 1 schematic diagram figure 1. STEVAL-ISB013V1 circuit schematic $ / 0 6 ' $ 6 & / * 1 ' 9 , 1 9 & & 1 & & * & x ) & x ) 5 5 f j p 5 5 x s n 5 x s n 5 x s n * 1 ' 6 & / 6 ' $ $ / 0 9 & & & * & * 9 & & 9 , 1 8 6 7 & ! - v
STEVAL-ISB013V1 revision history doc id 018791 rev 1 3/4 2 revision history table 1. document revision history date revision changes 14-nov-2011 1 initial release.
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