NU1619 is a highly integrated and highly efficient wireless power receiver. It integrates a synchronous rectifier designed for a wide frequency range and a programable low drop- out regulator for the optimal system efficiency. The regulator can provide a wide range regulated voltage or current output; both can be programmable through an I2C interface. NU1619 can conduct bi-directional communication with a transmitter system through ASK and FSK. The communication is compliant with WPC.