Datasheet

LT1768
18
TYPICAL APPLICATIONS
U
24 Watt Four Lamp CCFL Supply
1768 TA10
C8, 0.22µF
CTX110607
R6
499Ω
R9 0.0125Ω
Q1A ZDT1048
Q1B
ZDT1048
L2 22µH
L1 22µH
T1
C12, 22pF
X1
R7
499Ω
C5 0.1µF
C1 33µF
Q2 Si3456DV
D2
MBRS130LT3
LAMP
D4 BAT54
R3 69.8k
R1
49.9k
R2 30.1k
R5
125k
R11 1k
R4
11.3k
C3
0.1µF
C4 10µF
C2
0.047µF
V
IN
= 12V
PROG
0V TO 5V OR
1kHz PWM
C6 1µF
LT1768
DI02 PGND GATE V
C
AGND C
T
PROG DI01 SENSE
SHDN
R
MIN
R
MAX
PWM
FAULT
SHUTDOWN FAULT
V
REF
V
IN
5V
15 161 12 11 10 9 14 13
5 6 7 8 4
3 2
C13, 22pF
X2
LAMP
C14, 22pF
X3
LAMP
C15, 22pF
X4
LAMP
C7 2200pF
R8
100Ω
C9, 0.22µF
CTX110607
T2
C10, 0.22µF
CTX110607
T3
C11, 0.22µF
CTX110607
T4
D3 BAT54
R10 1k