BQ27546-G1 Datasheet, PDF (24/38 Pages) Texas Instruments – nullSingle-Cell Li-Ion Battery Fuel Gauge

bq27546-G1
SLUSC53A – MAY 2015 – REVISED DECEMBER 2015
10 Application and Implementation
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NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The bq27546-G1 measures the cell voltage, temperature, and current to determine battery SOC based on
Impedance Track™ algorithm (see Theory and Implementation of Impedance Track Battery Fuel-Gauging
Algorithm Application Note (SLUA450) for more information). The bq27546-G1 monitors charge and discharge
activity by sensing the voltage across a small-value resistor (5 mΩ to 20 mΩ typ.) between the SRP and SRN
pins and in series with the cell. By integrating charge passing through the battery, the battery’s SOC is adjusted
during battery charge or discharge.
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