General description

The UBA2024 is a high-voltage monolithic Integrated Circuit (IC). The IC is designed for driving Compact Fluorescent Lamps (CFL) in a half-bridge configuration.

The IC features a soft start function, an adjustable internal oscillator and an internal drive function with a high-voltage level shifter for driving the half-bridge.

To guarantee an accurate 50 duty cycle, the oscillator signal is passed through a divider before being fed to the output drivers.

Features

■ Integrated half-bridge power transistors

◆ UBA2024P: 9 Ω

◆ UBA2024AP: 6 Ω

◆ UBA2024T: 9 Ω

◆ UBA2024AT: 6.4 Ω

■ Integrated bootstrap diode

■ Integrated low-voltage supply

■ Adjustable oscillator frequency

■ 550 V maximum voltage

■ Minimum glow time control

■ Soft start

Applications

■ Driver for any kind of half-bridge configured load up to 23 W, provided that the

maximum junction temperature is not exceeded.

■ Designed for electronically self-ballasted CFL lamps