The IR3840WMTR1PBF is a power core-gate power IC from Infineon. It is designed for use in AC-DC applications, where it creates a high efficiency, low-side resonant converter. The IC combines control and protection, with a maximum operating frequency of 500kHz. It also integrates an analog temperature sensing system, allowing for adjustable over temperature protection. Other features include an active current limitation, under-voltage lockout, and excessive over-current protection. Additionally, its quiescent current consumption is very low, making it ideal for power saving applications.