UBA20272
Description
The UBA20271/2 are high-voltage power ICs intended to drive and control higher powered self ballasted pact Fluorescent Lamp (CFL) lighting applications.
Key Features
- 2.1 Half-bridge features
- UBA20271: Two internal 350 V, 1.0 max 5.0 A NMOST half-bridge power FETs
- UBA20272: Two internal 600 V, 3.0 , max 2.7 A NMOST half-bridge power FETs
- Integrated high-voltage level-shift function with integrated bootstrap diode
- Adjustable boost timing
- Fixed boost current ratio of 1.5
- Gradually boost to burn transition timing
- Continuously variable dimming function for standard phase cut dimmers
- Natural dimming curve by logarithmic correction
- Adjustable Minimum Dimming Level (MDL)
Applications
- Dimmable pact fluorescent lamps for power levels from 5 W to 20 W directly operating from 230 V (UBA20272) and 120 V (UBA20271) mains voltage
