LT1184F_15 Datasheet, PDF (8/24 Pages) Linear Technology – CCFL/LCD Contrast Switching Regulators

LT1182/LT1183/LT1184/LT1184F
TYPICAL PERFORMANCE CHARACTERISTICS
LCD FBP Reference
vs Temperature
1.274
1.264
1.254
1.244
1.234
1.224
1.214
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G28
LCD FBN Offset Voltage
vs Temperature
–1
–3
–5
–7
–9
–11
–13
–15
–17
–19
– 21
– 23
– 25
– 27
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
FBN to LCD V_C Transconductance
vs Temperature
1200
1100
1000
900
800
700
600
500
400
–75 – 50–25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G34
FBP Reference Voltage Line
Regulation vs Temperature
0.03
0.025
0.020
0.015
0.010
0.005
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G29
FBN Input Bias Current
vs Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G32
LT1183 REF Output Impedance
vs Temperature
70
65
60
55
50
45
40
35
30
25
20
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G35
FBP Input Bias Current
vs Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G30
FBP to LCD V_C Transconductance
vs Temperature
1300
1200
1100
1000
900
800
700
600
500
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G33
LT1184/84F REF Output
Impedance vs Temperature
30
25
20
15
10
5
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1182 • G36
8