The BQ27200DRKR is a stand-alone highly accurate single-cell Li-ion and Li-pol battery gas gauge Integrated Circuit with I2C interface targeted at space-limited, portable applications. The IC monitors a voltage drop across a small current sense resistor connected in series with the battery to determine charge and discharge activity of the battery. Compensations for battery temperature, self-discharge and discharge rate are applied to the capacity measurements to provide available time-to-empty information across a wide range of operating conditions. Battery capacity is automatically recalibrated or learned, in the course of a discharge cycle from full to empty. Internal registers include current, capacity, time-to-empty, state-of-charge, cell temperature and voltage, status and more.
- Reports accurate time-to-empty with measured load and historical maximum and standby loads
- Reports temperature, voltage and current
- High accuracy charge and discharge current integration with automatic offset calibration
- Requires no user calibration
- Programmable input/output port
- Internal user EEPROM configuration memory
- Automatic capacity reduction with age
- Stable oscillator without external components
- Dynamic end-of-discharge detection delay to allow use in a high-dynamic load environment
- Automatic sleep mode when communication lines are low
- Green product and no Sb/Br
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