UBA20261/2
600 V and 350 V power IC for step dimmable CFLs
Rev.
2 — 10 October 2011
Product data sheet
1.
General description
The UBA20261/2 are high-
voltage power integrated circuits designed to drive and control high powered self-ballasted Compact Fluorescent Lamp (CFL) lighting applications operating at mains supply
voltages of 120 V or 230 V.
The IC includes a half-bridge power circuit consisting of two NMOST power
MOSFETs, an advanced feature for step dimming and a lamp current controlled boost feature for boosting cold (amalgam) CFLs.
The controller contains a CFL half-bridge drive function, a high-
voltage level-shift circuit with integrated bootstrap diode, an oscillator function,...