Philips Semiconductors
600 V CCFL ballast driver IC
Product specification
UBA2070
FEATURES
• Current controlled operation
• Adaptive non-overlap time control
• Integrated high voltage level shift function
• Power-down function
• Protected against lamp failures or lamp removal
• Capacitive mode protection.
APPLICATION
• The circuit topology enables a broad range of backlight
inverters.
GENERAL DESCRIPTION
The UBA2070 is a high voltage integrated circuit for driving
electronically ballasted Cold Cathode Fluorescent Lamps
(CCFL) at mains voltages up to 277 V (RMS) (nominal
value). The circuit is made in a 650 V Bipolar CMOS
DMOS (BCD) power logic process. The UBA2070
provides the drive function for the two discrete MOSFETs.
Besides the drive function the UBA2070 also includes the
level-shift circuit, the oscillator function, a lamp voltage
monitor, a current control function, a timer function and
protections.
ORDERING INFORMATION
TYPE NUMBER
UBA2070T
UBA2070P
NAME
SO16
DIP16
PACKAGE
DESCRIPTION
plastic small outline package; 16 leads; body width 3.9 mm
plastic dual in-line package; 16 leads (300 mil); long body
VERSION
SOT109-1
SOT38-1
2002 Oct 24
2