STMicroelectronics GG25L Gas Gauge IC
with Alarm Output

STMicroelectronics' GG25L Gas Gauge IC with Alarm Output includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The GG25L 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. An alarm output signals a low SOC condition and can also indicate low battery voltage. The alarm threshold levels are programmable. The GG25L offers advanced features to ensure high-performance gas gauging in all application conditions.

Features

OptimGauge™ algorithm
0.25% accuracy battery voltage monitoring
Coulomb counter and voltage-mode gas gauge operations
Robust initial open-circuit-voltage (OCV) measurement at power up with debounce delay
Low battery level alarm output with programmable thresholds
Internal temperature sensor