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November 2011 Doc ID 022472 Rev 1 1/6
6
STEVAL-ISB012V1
Battery monitoring system demonstration board based on
the STC3105
Features
■The STC3105 device uses the Coulomb
counter method to track state-of-charge (SOC)
or to track when the battery is charging or
discharging
■Accurate measurements of the battery voltage
to estimate the battery state-of-charge
■Battery parameters are sent to the PC via USB
using a virtual COM port and can be observed
using HyperTerminal as well as a GUI
■The board can also display parameters on the
LCD
■Charging and discharging status is displayed
by the + and - sign respectively on both the
LCD and LED
■The board also shows low voltage and SOC
alarms
■The board can monitor a battery with a capacity
up to +/-10950 mAh
■RoHS compliant
Description
The STEVAL-ISB012V1 demonstration board
provides a simple, compact solution to monitor
voltage, current, and capacity of single cell Li-Ion
batteries using the STC3105, which has a highly
efficient gas gauge.
The STEVAL-ISB012V1 demonstration board has
an internal charger in order to charge the battery
and can be powered through a USB port or by
using a DC adaptor.
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Circuit schematic STEVAL-ISB012V1
2/6 Doc ID 022472 Rev 1
1 Circuit schematic
Figure 1. Circuit schematic (1 of 3)
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Obsolete Product(s) - Obsolete Product(s)
STEVAL-ISB012V1 Circuit schematic
Doc ID 022472 Rev 1 3/6
Figure 2. Circuit schematic (2 of 3)
!-V
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Circuit schematic STEVAL-ISB012V1
4/6 Doc ID 022472 Rev 1
Figure 3. Circuit schematic (3 of 3)
!-V
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STEVAL-ISB012V1 Revision history
Doc ID 022472 Rev 1 5/6
2 Revision history
Table 1. Document revision history
Date Revision Changes
23-Nov-2011 1 Initial release.
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STEVAL-ISB012V1
6/6 Doc ID 022472 Rev 1
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