The WST4054 with SOT-23-5 Battery Management ICs is a ROHS certified product from Winsok that is designed to manage and protect lithium-ion battery cells and systems. It features two integral gas gauges with cycle life tracking, temperature, protection monitoring, overcharge/overdischarge protection from full charge to empty and a balancing function. The WST4054 is a low quiescent current integrated circuit that is suitable for use in a variety of applications such as single cell monitoring, battery-powered applications, smart or dumb chargers, or portable devices. This IC also features an internally set over-voltage protection, an adjustable charge termination current, and an integrated 4.2V reverse charge facility. In addition, the WST4054 also features an automatically restarting timer for over-discharge and over-charge protection and an integrated I2C or SMbus interface for monitoring and control purposes. The WST4054 is available in an SOT-23-5 package.