The HP4555D8-44 Battery Management IC with DFN-8-EP(2x2) package is a RoHS-compliant, 8-pin device manufactured by Hypower Microelectronics. It is designed to provide precise protection of the battery in Li-ion and Li-polymer battery packs. It features a wide input voltage range, a wide battery temperature range, and advanced protection functions such as over-voltage protection, over-temperature protection, and over-current protection. In addition, it provides an SMBus interface for controlling and monitoring the device. It is capable of delivering up to 1A max continuous current, and is designed to work with a wide range of battery chemistries, such as lithium-cobalt, lithium-manganese, and Li-polymer.