UBA20261 Overview
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.
Key Features
- UBA20261: two internal 350 V, 1 , maximum 5 A NMOST half-bridge power MOSFETs
- UBA20262: two internal 600 V, 3 , maximum 2.7 A NMOST half-bridge power MOSFETs
- Integrated high-voltage level-shifter function with integrated bootstrap diode 2.2 Preheat and ignition features
- Coil saturation protection during ignition
- Adjustable saturation protection level
- Adjustable preheat time
- Adjustable preheat current
- Ignition lamp current detection 2.3 Lamp boost features
- Adjustable boost timing
- Fixed boost current ratio of 1.5
