RT9422A
Description
The RT9422A Li-Ion/Li-Polymer battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell battery packs. The RT9422A resides within the battery pack and manages a non-removable battery or removable battery pack.
The RT9422A reports State Of Charge, State Of Health, Full Charge Capacity, Time To Empty and Cycle Count based on the Voltaic Gauge with Current Sensing (VGCS) algorithm by using the voltage difference between battery voltage and OCV to calculate the increasing or decreasing SOC, with current sensing pensation to report battery SOC.
Voltaic Gauge with Current Sensing algorithm can support smoothly SOC and does not accumulate error with time and current. That is an advantage pared to coulomb counter which suffer from SOC drift caused by current sense error and battery self-discharge.
The RT9422A provides plete battery status monitor with interrupt alarm function. It could alert to host processor actively when condition of battery...
