STMicroelectronics new adaptive gas gauge reaches 0.25% accuracy!

FredericLannoo — Tue, 09 Nov 2021 17:06:45 GMT

Current Revision posted to Documents by FredericLannoo on 11/9/2021 5:06:45 PM

STC3115

For battery-powered systems the challenge is to precisely predict the remaining time before recharge. STC3115 innovates proposing low power state-of-charge estimation with long-term accuracy by self-adapting to both aging and temperature changes.

STC3115 features patented innovations. It performs both coulomb counting and periodic voltage-mode state-of-charge measurements to adjust the Coulomb counter for accuracy.

The STC3115 uses both sets of measurements continuously with OptimGauge™, an adaptive algorithm that tracks the state of charge and corrects the battery model all along the battery lifetime.

It is available in a 1.4 x 2.0 mm package.

Applications

■ Wireless sensors & cameras

■ Portable medical equipment

■ Sport & wellness

■ Navigation systems

■ Smart phones & Tablets

Features

■ Low-power consumption

45 µA power saving operating mode
2 µA (max) in standby mode

■ Adaptive Voltage mode & Coulomb counter in parallel

■ Battery model curve continuous adjustment for aging & temperature compensation

■ High accuracy: 0.25% max battery voltage accuracy

■ New battery insertion detection

■ Adaptable to all types of batteries

■ I²C interface

Tags: smartphone, gauge, others, sports, consumption, coulomb, stc3115, accuracy, wellness, battery, systems, voltage, gas, counter, stmicroelectronics, tablets, wireless, medical, st, mode, navigation