Li-ion battery monitoring and fuel gauge evaluation board based on STC3100

STEVAL-ISB009V1

Overview

The STEVAL-ISB009V1 demonstration board, based on the STC3100, is able to monitor the critical parameters of a single-cell Li-Ion battery (voltage, temperature, and current) and includes hardware functions to implement a gas-gauge for battery charge monitoring, based on a programmable 12-bit to 14-bit A/D converter.

The battery current can be up to 2.5 A and the accumulator system provides a capacity up to +/-7000 mAh with a resolution of 0.2 mAh.
The device is programmable through an I²C interface.

Main features

Accurate battery voltage measurement
Coulomb counter to keep track of the battery’s state-of-charge
Internal temperature sensor
Internal or external 32 kHz time base
I²C interface for battery monitoring and device control
0.5 % battery voltage accuracy
1 % Coulomb counter accuracy using an external RTC signal (3.5 % using the internal time base).
Low power consumption: 100 μA in operating conditions, 2 μA in stand-by mode
RoHS compliant

Design Files

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Update:2025-06-20 12:31:12

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