STMicroelectronics, Battery Fuel Gauge IC, 2.7 V to 4.5V Input -0.3V Output, CSP 10-Pin

The STC3115 includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3115 uses current sensing, Coulomb counting and accurate measurements of the battery voltage to estimate the state-of-charge (SOC) of the battery. An internal temperature sensor simplifies implementation of temperature compensation.