LT1786F Просмотр технического описания (PDF) - Linear Technology
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LT1786F Datasheet PDF : 20 Pages
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LT1786F
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current
vs Temperature
10
9
8
7
6
5
4
3
2
1
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G01
SHDN Input Bias Current
vs Temperature
6
5
4
3
VCC = 5V
2
VCC = 3V
1
0
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G04
Maximum Duty Cycle
vs Temperature
95
93
91
89
87
85
83
81
79
77
75
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G07
ISUS Current vs Temperature
100
90 SMBSUS = 0V
8O
70
60
50
VCC = 5V
40
VCC = 3V
30
20
10
0
–55 –25
–5 25 50 75 100 125 150
TEMPERATURE (°C)
1786 G02
SHDN Threshold Voltage
vs Temperature
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)
1786 G05
ICCFL Summing Voltage
vs Temperature
0.53
0.52
0.51
0.50
0.49
0.48
0.47
0.46
0.45
0.44
0.43
0.42
0.41
0.40
0.39
0.38
–75 – 50 –25
0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G08
SHDN Supply Current
vs Temperature
300
270 SHDN = 0V
240
210
180
VCC = 5V
150
120
VCC = 3V
90
60
30
0
–55 –25
–5 25 50 75 100 125 150
TEMPERATURE (°C)
1786 G03
Frequency vs Temperature
240
230
220
210
200
190
180
170
160
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1786 G06
ICCFL Summing Voltage
Load Regulation
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
0
T = –55°C
T = 25°C
T = 125°C
20 40 60 80 100 120 140 160 180 200
ICCFL PROGRAMMING CURRENT (µA)
1786 G09
4
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