STC3115AIQT Description

The STC3115AIQT from STMicroelectronics offers the hardware functionality needed to construct a low-cost gas gauge for battery monitoring. The STC3115 estimates the battery's state of charge (SOC) via current sensing, Coulomb counting, and precise voltage measurements. The use of an internal temperature sensor facilitates temperature compensation installation.

STC3115AIQT Features

• Programmable low battery alarm

• Internal temperature sensor

• Battery swap detection

• Low power: 45 μA in power-saving mode, 2 μA max. in standby mode

• 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

STC3115AIQT Applications

• Portable medical equipment

• Mobile phones, multimedia players, digital cameras