STMicroelectronics Battery monitor demonstration board based on the STC3105 STEVAL-ISB013V1 STEVAL-ISB013V1 Data Sheet

   

   

   

For further information contact your local STMicroelectronics sales office.

November 2011

Doc ID 018791 Rev 1

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Battery monitor demonstration board with alarm output

for gas gauge applications based on the STC3105

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Accurate battery voltage measurement

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Coulomb counter to monitor the battery state-
of-charge (SOC)

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Internal 32.768 kHz time base

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Low-battery alarm output with programmable 
SOC and voltage thresholds

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Relaxation timer to track load condition (user-
programmable load current threshold)

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C interface for battery monitoring and device 

control

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Low power consumption:

– 100 µA in active operating conditions

– 50 µA in power saving operating conditions

– 2 µA in standby mode

– 1 µA in power-down mode

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RoHS compliant

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.