7
LT1182/LT1183/LT1184/LT1184F
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
CCFL V
C
Switching Threshold
Voltage vs Temperature
TEMPERATURE (°C)
–75
0.6
CCFL V
C
SWITCHING THRESHOLD VOLTAGE (V)
0.7
0.9
1.0
1.1
1.3
–50
50
100
LT1182 • G19
0.8
1.2
25
150
175
–25
0
75 125
LCD V
C
Low Clamp Voltage
vs Temperature
TEMPERATURE (°C)
–50
–75
0
LCD V
C
LOW CLAMP VOLTAGE (V)
0.10
0.03
0.04
0.05
1.00
0.07
0
50
75
LT1182 • G20
0.02
0.08
0.09
0.06
–25 25
100
125
LCD V
C
High Clamp Voltage
vs Temperature
TEMPERATURE (°C)
–75
1.7
LDC V
C
HIGH CLAMP VOLTAGE (V)
1.8
2.0
2.1
2.2
2.4
–50
50 100
LT1182 • G21
1.9
2.3
25
150
175
–25
0
75 125
LCD V
C
Switching Threshold
Voltage vs Temperature
TEMPERATURE (°C)
–75
0.6
LDC V
C
SWITCHING THRESHOLD VOLTAGE (V)
0.7
0.9
1.0
1.1
1.3
–50
50
100
LT1182 • G22
0.8
1.2
25
150
175
–25
0
75 125
CCFL High-Side Sense Null
Current vs Temperature
TEMPERATURE (°C)
0.940
CCFL HIGH-SIDE SENSE NULL CURRENT (A)
0.980
0.960
1.020
1.000
1.060
1.040
–25 25 75 125
LT1182 • G23
175–50
–75
0 50 100 150
CCFL High-Side Sense Null Current
Line Regulation vs Temperature
TEMPERATURE (°C)
–75
CCFL HIGH-SIDE SENSE LINE REGULATI0N (%V)
0.120
0.160
125
LT1182 • G24
0.080
0.040
0.000
–25
25
75
175
0.100
0.140
0.060
0.020
100
–50
0
50
150
TEMPERATURE (°C)
–75
CCFL HIGH-SIDE SENSE SUPPLY CURRENT (µA)
110
130
150
140
120
100
80
60
125 150
LT1182 • G25
90
70
50
–25
0
–50
25 50
75 100
175
CCFL High-Side Sense Supply
Current vs Temperature
Bulb Protect Servo Voltage
vs Temperature
TEMPERATURE (°C)
–75
BULB PROTECT SERVO VOLTAGE (V)
7.1
7.3
7.5
7.4
7.2
7.0
6.8
6.6
125 150
LT1182 • G26
6.9
6.7
6.5
–25 0–50
25 50
75 100
175
I
CCFL
= 10µA
I
CCFL
= 50µA
I
CCFL
= 100µA
Bulb Input Bias Current
vs Temperature
TEMPERATURE (°C)
BULB INPUT BIAS CURRENT (µA)
6
8
10
LT1182 • G27
4
2
0
–75 125 150
–25 0
–50
25 50
75 100
175
