UBA2024 Half-bridge power IC for CFL lamps Rev. 6.2 1 November 2010 Product data sheet 1. General description The UBA2024 is a family of high-voltage monolithic Integrated Compact Fluorescent Lamp (CFL) drivers for a large range of lamp powers. Specific versions are optimized for 230 V and 110 V mains supplies. The product family integrates full CFL controller functionality with high voltage half-bridge transistors. All products in the UBA2024 family are pin-to-pin compatible enabling a single application design covering a wide range of power ratings. 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 and benefits The common feature set includes: high power efficiency a high integration level with low component counts enabling small form factor electronic ballast integrated bootstrap diode soft start function minimum glow time control integrated low-voltage supply adjustable operating frequency as a result of the embedded oscillator an accurate 50 % duty cycle provided by an embedded oscillator signal integrated half-bridge power transistors an internal drive function with a high-voltage level shifter up to 550 V (300 V for the UBA2024BP and UBA2024BT) 3. 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 lampsUBA2024 NXP Semiconductors Half-bridge power IC for CFL lamps 4. Ordering information Table 1. Ordering information Type number Package Name Description Version 1 UBA2024P DIP8 plastic dual in-line package 8 leads (300 mil) SOT97-1 1 UBA2024T SO14 plastic small outline package 14 leads body width 3.9 mm SOT108-1 2 UBA2024AP DIP8 plastic dual in-line package 8 leads (300 mil) SOT97-1 3 UBA2024AT SO14 plastic small outline package 14 leads body width 3.9 mm SOT108-1 4 UBA2024BP DIP8 plastic dual in-line package 8 leads (300 mil) SOT97-1 4 UBA2024BT SO14 plastic small outline package 14 leads body width 3.9 mm SOT108-1 1 For this type number, R = 9 and I = 900 mA. DS(on) SAT 2 For this type number, R = 6 and I = 1350 mA. DS(on) SAT 3 For this type number, R = 6.4 and I = 1200 mA. DS(on) SAT 4 For this type number, R = 2 and I = 2500 mA. DS(on) SAT 5. Block diagram (6) 4 HV (3) 11 V CONTROL FS DD 6* (7)** V DD HS V DD(stop) 8 (1) SWEEP AND HIGH VOLTAGE HIGH SIDE SW GLOW TIME CONTROL LEVEL SHIFTER DRIVER (5) 14 OUT 7 (8) LS RC OSCILLATOR DIVIDE-BY-2 DEAD TIME LOW SIDE DRIVER 1,2,3,5,9,10,13 (2) (4) 12 SGND PGND mdb029 Fig 1. Block diagram UBA2024 All information provided in this document is subject to legal disclaimers. NXP B.V. 2010. All rights reserved. Product data sheet Rev. 6.2 1 November 2010 2 of 17
