Datasheet
22
LT1182/LT1183/LT1184/LT1184F
TYPICAL APPLICATIONS N
U
R2
40.5k
1182 TA04
1182 TA05
1182 TA08
1182 TA09
1182 TA10
1182 TA06
1182 TA07
1182 TA12
C1
2.2µF
R1
40.5k
+
TO I
CCFL
PIN
LT1182/LT1183 I
CCFL
PWM Programming LT1183 I
CCFL
PWM Programming with V
REF
LT1184/LT1184F I
CCFL
PWM Programming
LT1183 I
CCFL
Programming
with Potentiometer Control
R1 AND R2 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
R2
40.35k
C1
2.2µF
R1
40.35k
+
TO I
CCFL
PIN
R1 AND R2 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
+
FROM V
REF
TO I
CCFL
PIN
Q1
VN2222L
R1
330Ω
R2
7.15k
R3
7.15k
C1
22µF
R1 PREVENTS OSCILLATION.
R2 AND R3 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
FROM V
REF
TO I
CCFL
PIN
Q1
VN2222L
R1
3.57k
R2
3.57k
R3
7.15k
C1
22µF
V (PWM)
0V TO 5V
1kHz PWM
10 to 100% DC =
50µA TO 0µA
R1, R2 AND R3 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
+
V
REF
R2
50k
R1
15.9k
TO I
CCFL
PIN
R1 AND R2 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
I
CCFL
= 12µA TO 50µA.
LT1184/LT1184F I
CCFL
Programming
with Potentiometer Control
LT1182/LT1183/LT1184/LT1184F
I
CCFL
Programming with DAC Control
V
REF
R2
50k
R1
15.5k
TO I
CCFL
PIN
R1 AND R2 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
I
CCFL
= 12µA TO 50µA.
LT1184/LT1184F I
CCFL
PWM Programming with V
REF
LT1183 I
CCFL
PWM Programming with V
REF
+
FROM V
REF
TO I
CCFL
PIN
Q1
VN2222L
R1
330Ω
R2
6.98k
R3
6.98k
C1
22µF
V (PWM)
0V TO 5V
1kHz PWM
0% to 90% DC =
0µA to 50µA
V (PWM)
0V TO 5V
1kHz PWM
0% to 90% DC =
0µA to 50µA
V (PWM)
0V TO 5V
1kHz PWM
0% to 90% DC =
0µA to 50µA
V (PWM)
0V TO 5V
1kHz PWM
0% to 90% DC =
0µA to 50µA
R1 PREVENTS OSCILLATION.
R2 AND R3 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
1182 TA11
FROM V
REF
TO I
CCFL
PIN
Q1
VN2222L
R1
3.48k
R2
3.48k
R3
6.98k
C1
22µF
V (PWM)
0V TO 5V
1kHz PWM
10 to 100% DC =
50µA TO 0µA
R1, R2 AND R3 ARE IDEAL VALUES.
USE NEAREST 1% VALUE.
+
LT1184/LT1184F I
CCFL
PWM Programming with V
REF
DAC
R1
5k
TO I
CCFL
PIN
R1 DECOUPLES THE DAC OUTPUT CAPACITANCE
FROM THE I
CCFL
PIN.
STRAY OUTPUT
CAPACITANCE
CURRENT SOURCE
DAC