The BCT4057AEUT-TR with SOT-23-6 is a RoHS compliant Battery Management IC manufactured by Broadcom for various applications. The device is a RoHS compliant advanced battery charging solution for applications like smart phones, tablets, navigation, and other portable products. It has a high level of integration while minimizing the external components, and it can provide over-voltage, over-temperature, current -limit, and short-circuit protection for Li-ion and Li-polymer battery cells. It features a linear battery charger with optimized charge algorithms for fast charging, selectable charge current, float voltage, and other custom settings. The device is capable of providing the charge status through the LED and switching the power between the battery and AC or DC adapter, making it suitable for applications that require power management as well as charging features. Furthermore, it has a low external part count, small form factor, and low static power consumption for improved battery life.