LT1186F 查看數據表（PDF） - Linear Technology
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LT1186F Datasheet PDF : 16 Pages
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LT1186F
TYPICAL PERFORMANCE CHARACTERISTICS
VC Switching Threshold
vs Temperature
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G16
High-Side Sense Supply Current
vs Temperature
150
140
130
120
110
100
90
80
70
60
50
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G19
BULB Protect Servo Voltage
vs Temperature
7.5
7.4
7.3
7.2
ICCFL = 100µA
7.1
7.0
6.9
ICCFL = 50µA
6.8
6.7
6.6
ICCFL = 10µA
6.5
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G17
High-Side Sense Null
Current vs Temperature
1.060
1.040
1.020
1.000
0.980
0.960
0.940
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G20
BULB Input Bias Current
vs Temperature
10
8
6
4
2
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G18
High-Side Sense Null Current Line
Regulation vs Temperature
0.160
0.140
0.120
0.100
0.080
0.060
0.040
0.020
0.000
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
LT1186F • G21
VSW Sat Voltage
vs Switch Current
1.0
0.9
0.8
T = 25°C
0.7
T = 125°C
T = –5°C
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0.3 0.6 0.9 1.2 1.5
SWITCH CURRENT (A)
LT1186F • G22
VSW Current Limit vs Duty Cycle
2.5
2.0
T = 0°C
T = 25°C
1.5
T = 125°C
1.0
MINIMUM
0.5
0
0 10 20 30 40 50 60 70 80 90
DUTY CYCLE (%)
LT1186F • G23
Forced Beta vs ISW on VSW
110
100
90
80
70
60
50
40
30
20
10
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
CCFL ISW (A)
LT1186F • G24
6
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