UBA2028

UBA2028 600 V dimmable power IC for compact fluorescent lamps Rev. 02 — 19 July 2010 Product data sheet 1. General description The UBA2028 is a high voltage power IC that drives and controls electronically ballasted Compact Fluorescent Lamps (CFLs). The IC includes a Metal-Oxide-Semiconductor Transistor (MOST) half-bridge power circuit, a dimming function, a high voltage level shift circuit, an oscillator function, a lamp voltage monitor, a current control function, a timer function and various protections. 2. Features and benefits „ Two internal 600 V, 3 Ω max MOST half-bridge power circuits „ For steady state currents up to 280 mA „ For ignition currents up to 1.5 A „ Adjustable preheat time „ Adjustable preheat current „ Current controlled operating „ Single ignition attempt „ Adaptive non-overlap time control „ Integrated high voltage level shift function „ Power-down function „ Protection against lamp failures or lamp removal „ Capacitive mode protection 3. Appl...