UBA2024
Half-bridge power IC for CFL lamps
Rev. 04 — 17 September 2009
Product data sheet
1. 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.
2. Features
I Integrated half-bridge power transistors
N UBA2024P: 9 Ω
N UBA2024AP: 6 Ω
N UBA2024T: 9 Ω
N UBA2024AT: 6.4 Ω
I Integrated bootstrap diode
I Integrated low-voltage supply
I Adjustable oscillator frequency
I 550 V maximum voltage
I Minimum glow time control
I Soft start
3. Applications
I Driver for any kind of half-bridge configured load up to 23 W, provided that the
maximum junction temperature is not exceeded.
I Designed for electronically self-ballasted CFL lamps