STEVAL-ISB009V1 STMicroelectronics

STEVAL-ISB009V1 Li-Ion battery monitoring and gas-gauge demonstration board based on the STC3100 Data brief Features Accurate battery voltage measurement Coulomb counter to keep track of the batterys state-of-charge Internal temperature sensor Internal or external 32 kHz time base 2 I C 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). STEVAL-ISB009V1 Low power consumption: 100 A in operating conditions, 2 A in stand-by mode RoHS compliant Description 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. 2 The device is programmable through an I C interface. November 2010 Doc ID 18142 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Circuit schematic STEVAL-ISB009V1 1 Circuit schematic Figure 1. STEVAL-ISB009V1 demonstration board schematic 04 6 ). ) 34 04 )/ 2OSC )/ 6). & 2 + / 04 2 3 04 6 3 6 04 3 04 3 04 3 , 3 , . 0- M 2CG 0 . 04 . - 2/4 Doc ID 18142 Rev 1 2/