LT1786F Просмотр технического описания (PDF) - Linear Technology
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LT1786F Datasheet PDF : 20 Pages
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LT1786F
TYPICAL PERFORMANCE CHARACTERISTICS
VC Sink Offset Current
vs Temperature
10
9
8
CCFL VC = 1.5V
7
6
5
CCFL VC = 1.0V
4
3
2
1
0
CCFL VC = 0.5V
–1
–2
–3
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G10
Negative DIO Voltage
vs Temperature
1.6
1.4
I(DIO) = 10mA
1.2
1.0
I(DIO) = 5mA
0.8
I(DIO) = 1mA
0.6
0.4
0.2
0
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G13
VC High Clamp Voltage
vs Temperature
2.4
2.3
∆CCFL VC Source Current for
∆ICCFL Programming Current
vs Temperature
5.10
5.05
5.00
ICCFL = 100µA
4.95
ICCFL = 50µA
ICCFL = 10µA
4.90
4.85
4.80
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G11
VC to DIO Current Servo Ratio
vs Temperature
103
102
101
I(DIO) = 10mA
100 I(DIO) = 1mA
99
I(DIO) = 5mA
98
97
96
95
–75 – 50–25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G14
VC Switching Threshold
vs Temperature
1.3
1.2
2.2
1.1
2.1
1.0
2.0
0.9
1.9
0.8
1.8
0.7
1.7
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G16
0.6
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G17
Positive DIO Voltage
vs Temperature
1.2
1.0
I(DIO) = 10mA
0.8
I(DIO) = 5mA
0.6
I(DIO) = 1mA
0.4
0.2
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G12
VC Low Clamp Voltage
vs Temperature
0.30
0.25
0.20
0.15
0.10
0.05
0
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G15
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)
1786 G18
5
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