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STMicroelectronics GG25L Gas Gauge IC with Alarm Output

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
  • Battery swap detection
  • Low power: 45μA in power-saving mode, 2μA max in standby mode
  • 1.4 x 2.0mm 10-bump CSP package
Applications
  • Wearable
  • Fitness and healthcare
  • Portable medical equipment
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Published: 2019-05-15 | Updated: 2019-05-15