UCC2974 UCC3974
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SLUS485A – JULY 2001 – REVISED NOVEMBER 2001
DUAL COLD CATHODE FLUORESCENT LAMP CONTROLLER
FEATURES
D Synchronous or Nonsynchronous Operation D Dual Output and Control Stages D Bi
CMOS Technology D Accurate Current Control with 2-mA Typical
Supply Current
D Analog or Digital Low-Frequency Dimming
Capability
D Open Lamp Protection with
Voltage Clamp D 4.
5-V to 25-V Operation D PWM Frequencies Synchronized to External
Resonant Tanks
D TSSOP-16 (PW) Package
TYPICAL APPLICATION
VIN
VIN
BRIGHT SYNC
VIN
UCC3974
1 OUT1
OUT2 16
2 VIN
GND 15
3 BUCK1 BUCK2 14
4 COMP1
CBP 13
5 FB1
COMP2 12
6 RC
FB2 11
7 RD
MODE 10
8 DIM LFDSYNC 9
MIRROR CHANNEL 1
UDG–01023
APPLICA...