General description
The UBA2025 is a high voltage power IC intended to drive and control a Compact Fluorescent Lamp (CFL). It contains a half bridge power circuit, an oscillator, and a control circuit for starting up, preheating, ignition, lamp burning, and protection.

Features
■ Two internal 600 V, 3 Ω max NMOST half bridge powers
■ For steady state half bridge currents up to 280 mA
■ For ignition half bridge currents up to 1.5 A
■ Adjustable preheat and ignition time
■ Adjustable preheat current
■ Adjustable lamp power
■ Lamp temperature stress protection at higher mains voltages
■ Capacitive mode protection
■ Protection against too low a drive voltage for the power MOSFETs.

Applications
■ 5 W to 25 W CFLs provided that the maximum junction temperature is not exceeded.