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NXP Semiconductors - Low Voltage Full-bridge control IC

Numéro de référence UBA2072
Description Low Voltage Full-bridge control IC
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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UBA2072 fiche technique
UBA2072
Low Voltage Full-bridge control IC for CCFL backlighting
Rev. 08.0 — February 2007
Preliminary data sheet
1. General description
The UBA2072 is a low 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 UBA2072 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.
The UBA2072 is designed to operate over a wide low voltage inverter supply range, up to
30V. The IC can be supplied directly from the inverter supply.
2. Features
Wide supply voltage range (9 V to 30 V DC)
Adjustable maximum fault timing
Integrated level-shifters
Integrated bootstrap diodes
Lamp current control
Over-voltage control
Over-current protection
Ignition failure detection
Arcing detection
Brightness level adjustment through PWM dimming
Integrated PWM generator
3. Applications
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).
Free Datasheet http://www.Datasheet4U.com

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