The HP4059D6-42 is a Battery Management Packaging IC manufactured by Hypower Microelectronics. Its PMIC - Battery Management TDFN1X1-6L RoHS package provides a compact, reliable, and efficient solution for powering small, low-power applications. It is designed to manage and optimize the charging and powering of single-cell Li-ion/Li-polymer and Ni-MH/Ni-Cd batteries. It features a wide operating voltage range of 2.0V to 6.0V, and provides overvoltage protection and several current security functions. The entire IC is RoHS compliant, and is suitable for applications such as medical, automotive, consumer, industrial, and handheld electronics.