Datasheet
2
LT1182/LT1183/LT1184/LT1184F
DESCRIPTION
U
current. An active low shutdown pin typically reduces total
supply current to 35µA for standby operation. A 200kHz
switching frequency minimizes the size of required mag-
netic components. The use of current mode switching
techniques with cycle-by-cycle limiting gives high reliabil-
ity and simple loop frequency compensation. The LT1182/
LT1183/LT1184/LT1184F are all available in 16-pin nar-
row SO packages.
LT1184/LT1184F pin out the reference for simplified pro-
gramming of lamp current.
The LT1182/LT1183/LT1184/LT1184F operate with input
supply voltages from 3V to 30V. The ICs also have a
battery supply voltage pin that operates from 4.5V to 30V.
The LT1182/LT1183 draw 9mA typical quiescent current
while the LT1184/LT1184F draw 6mA typical quiescent
V
IN
, BAT, Royer, Bulb .............................................. 30V
CCFL V
SW
, LCD V
SW
............................................... 60V
Shutdown ................................................................. 6V
I
CCFL
Input Current .............................................. 10mA
DIO Input Current (Peak, < 100ms) .................... 100mA
LT1182: FBP, FBN, LT1183: FB Pin Current......... ±2mA
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
T
JMAX
= 100°C, θ
JA
= 100°C/W
T
JMAX
= 100°C, θ
JA
= 100°C/W
Consult factory for Industrial and Military grade parts
LT1183CS
ORDER PART
NUMBER
T
JMAX
= 100°C, θ
JA
= 100°C/W T
JMAX
= 100°C, θ
JA
= 100°C/W
LT1182CS
ORDER PART
NUMBER
LT1184CS
ORDER PART
NUMBER
LT1184FCS
LT1183/LT1184/1184F: REF Pin Source Current .... 1mA
Junction Temperature (Note 1)............................ 100°C
Operating Ambient Temperature Range ..... 0°C to 100°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
ORDER PART
NUMBER
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
CCFL PGND
I
CCFL
DIO
CCFL V
C
AGND
SHUTDOWN
LCD V
C
LCD PGND
CCFL V
SW
BULB
BAT
ROYER
V
IN
FBP
FBN
LCD V
SW
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
CCFL PGND
I
CCFL
DIO
CCFL V
C
AGND
SHUTDOWN
NC
NC
CCFL V
SW
BULB
BAT
NC
V
IN
REF
NC
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
CCFL PGND
I
CCFL
DIO
CCFL V
C
AGND
SHUTDOWN
LCD V
C
LCD PGND
CCFL V
SW
BULB
BAT
ROYER
V
IN
REF
FB
LCD V
SW
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
CCFL PGND
I
CCFL
DIO
CCFL V
C
AGND
SHUTDOWN
NC
NC
CCFL V
SW
BULB
BAT
ROYER
V
IN
REF
NC
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9