LT1184F_15 Datasheet, PDF (2/24 Pages) Linear Technology – CCFL/LCD Contrast Switching Regulators

LT1182/LT1183/LT1184/LT1184F
DESCRIPTION
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
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.
ABSOLUTE MAXIMUM RATINGS
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
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
PACKAGE/ORDER INFORMATION
CCFL PGND 1
I_CCFL 2
DIO 3
CCFL V_C 4
AGND 5
SHUTDOWN 6
LCD V_C 7
LCD PGND 8
TOP VIEW
16 CCFL V_SW
15 BULB
14 BAT
13 ROYER
12 V_IN
11 FBP
10 FBN
9 LCD V_SW
ORDER PART
NUMBER
LT1182CS
S PACKAGE
16-LEAD PLASTIC SO
T_JMAX = 100°C, θ_JA = 100°C/W
TOP VIEW
CCFL PGND 1
I_CCFL 2
DIO 3
CCFL V_C 4
AGND 5
SHUTDOWN 6
NC 7
NC 8
16 CCFL VSW
15 BULB
14 BAT
13 NC
12 VIN
11 REF
10 NC
9 NC
ORDER PART
NUMBER
LT1184CS
S PACKAGE
16-LEAD PLASTIC SO
T_JMAX = 100°C, θ_JA = 100°C/W
Consult factory for Industrial and Military grade parts
2
TOP VIEW
CCFL PGND 1
I_CCFL 2
DIO 3
CCFL V_C 4
AGND 5
SHUTDOWN 6
LCD V_C 7
LCD PGND 8
16 CCFL VSW
15 BULB
14 BAT
13 ROYER
12 VIN
11 REF
10 FB
9 LCD VSW
S PACKAGE
16-LEAD PLASTIC SO
T_JMAX = 100°C, θ_JA = 100°C/W
TOP VIEW
CCFL PGND 1
I_CCFL 2
DIO 3
CCFL V_C 4
AGND 5
SHUTDOWN 6
NC 7
NC 8
16 CCFL VSW
15 BULB
14 BAT
13 ROYER
12 VIN
11 REF
10 NC
9 NC
S PACKAGE
16-LEAD PLASTIC SO
T_JMAX = 100°C, θ_JA = 100°C/W
ORDER PART
NUMBER
LT1183CS
ORDER PART
NUMBER
LT1184FCS