UBA2028T/N1,518

Overview

The UBA2028T/N1,518 is a high-voltage power integrated circuit designed for driving and controlling electronically ballasted compact fluorescent lamps (CFLs). It integrates a MOST half-bridge power circuit, dimming functionality, a high-voltage level shift circuit, an oscillator, lamp voltage monitoring, current control, timer functions, and comprehensive protection mechanisms. The device supports steady-state currents up to 280 mA and ignition currents up to 1.5 A, with adjustable preheat time and current.

Feature Summary

• Integrates two internal 600 V MOST half-bridge power circuits for efficient lamp driving
• Includes adaptive non-overlap time control and capacitive mode protection for enhanced reliability
• Features built-in dimming capability and adjustable preheat parameters for flexible operation

Applications

• Dimmable compact fluorescent lamps (CFLs) in the 5 W to 25 W power range

Procurement Notes

Verify component authenticity through authorized NXP distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 28-SOIC specification. Ensure storage conditions comply with moisture sensitivity level requirements to prevent damage prior to soldering. Cross-reference ordering part numbers to ensure exact functional match.

Selection Notes

Select this IC for applications requiring integrated high-voltage control and dimming capabilities for CFLs. Consider thermal management constraints as maximum junction temperature limits must not be exceeded during operation. Evaluate system compatibility with the required input voltage ranges and output current specifications for the target lamp wattage.

Part Context

This component belongs to NXP's UBA2028 series of power ICs specifically engineered for compact fluorescent lighting solutions. The series focuses on providing complete drive and control functionality within a single chip, reducing external component count and simplifying electronic ballast design for consumer and commercial lighting fixtures.