This application note describes a demonstration board able to drive a 4 x 18 W linear T8 fluorescent tubes. The ballast is controlled by the new L6585DE IC that integrates the PFC and half-bridge control circuits, relevant drivers, and the circuitry that manages all the operating phases (preheating, ignition and run mode) of the lamp. Protections against failures such as lamp disconnection, anti-capacitive mode and PFC overvoltage are guaranteed and obtained with a minimum number of external components. In addition to the description of the circuit and design criteria, this document provides a short overview of the ballast performances.