UBA2074 Datasheet PDF | NXP Semiconductors

NXP Semiconductors UBA2074

The UBA2074 is a high voltage IC intended to drive Cold Cathode Fluorescent Lamps (CCFLs) for back-lighting applications. The IC contains level-shifters, bootstrap diodes and drivers for the external full-bridge power switches. Furthermore, the UBA2074 has a build-in HF oscillator which determines the operating frequency, a phase shift controller for obtaining constant lamp current, and a PWM generator which is used to set the brightness level of the CCFLs.

Part No.	UBA2074
Datasheet	UBA2074 Download
Manufacturer	NXP Semiconductors
Description	High Voltage Full-bridge control IC
Buy	Stock & Price

FEATURES

Suitable for operating in a very wide inverter supply voltage range (up to 550 V DC for SO28 package, up to 225 V for SSOP28 package) Wide IC supply voltage range (9 V to 30 V DC) Suitable for synchronizing multiple inverters to a single operating frequency with equal lamp current phase Adjustable maximum fault timing Integrated level-shifters Integrated bootstrap diodes Lamp current control Over-voltage control Over-current protection Ignition failure detection Hard-switching control (not in the A-version) Arcing detection Brightness level adjustment through PWM dimming Integrated PWM generator Free Datasheet D R A FT NXP Semiconductors UBA2074(A) D D D R R A FT D R A FT D R R A A A FT FT FT D D R R A A FT FT D D D R A FT D High Voltage Full-bridge control IC for CCFL backlighting D R A FT D R A FT D R A FT D R 3.

APPLICATIONS

R LCD-backlighting, including LCD-TV and LCD-Monitor applications. The IC is intended to drive and control a full-bridge inverter with resonant load circuit for CCFLs, but can also drive an array of External Electrode Fluorescent Lamps (EEFLs).