LT1182 LINER [Linear Technology], LT1182 Datasheet - Page 9

• Manufacturer Part Number: LT1182
• Description: CCFL/LCD Contrast Switching Regulators
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
1.2
0.6
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1.5
0.9
0.3
0
0
CCFL V
vs Switch Current
0
LCD V
vs Duty Cycle
0
10
0.3
SW
20
SW
SWITCH CURRENT (A)
Current Limit
Sat Voltage
30
DUTY CYCLE (%)
MINIMUM
T = 125 C
0.6
T = 25 C
40
T = 125 C
T = 25 C
50
0.9
60
T = 0 C
W
70
1.2
T = –5 C
LT1182 • G40
LT1182 • G37
80
U
1.5
90
110
100
2.0
1.6
0.8
0.4
1.2
90
80
70
60
50
40
30
20
10
0
0
0
Forced Beta vs I
0
LCD V
vs Switch Current
0.2
0.3
0.4
SW
SWITCH CURRENT (A)
Sat Voltage
0.6
T = 125 C
T = 25 C
CCFL I
0.6
0.8
SW
1.0
SW
LT1182/LT1183/LT1184/LT1184F
on CCFL V
0.9
1.2
(A)
1.4
T = –5 C
1.2
1.6
LT1182 • G38
LT1182 • G41
SW
1.8
1.5
2.0
100
2.0
1.0
2.5
1.5
0.5
90
80
70
60
50
40
30
20
10
0
0
CCFL V
vs Duty Cycle
Forced Beta vs I
0
0
0.2
10
0.4
20
SW
0.6
Current Limit
30
DUTY CYCLE (%)
0.8
LCD I
MINIMUM
40
T = 125 C
T = 25 C
SW
1.0
SW
50
on LCD V
(A)
1.2
60
1.4
T = 0 C
70
1.6
LT1182 • G39
SW
LT1182 • G42
80
1.8
9
90
2.0