LT1249I Просмотр технического описания (PDF) - Linear Technology
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LT1249I Datasheet PDF : 12 Pages
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LT1249
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage vs
Temperature
7.536
7.524
7.512
7.500
7.488
7.476
7.464
7.452
7.440
7.428
–75 –50 –25 0 25 50 75 100 125 150
JUNCTION TEMPERATURE (°C)
1249 G03
Multiplier Current
300
VAOUT = 6.5V
VAOUT = 6V
VAOUT = 5.5V
150
0
0
250
IAC (µA)
VAOUT = 5V
VAOUT = 4.5V
VAOUT = 4V
VAOUT = 3.5V
VAOUT = 3V
VAOUT = 2.5V
VAOUT = 2V
500
1249 G04
Supply Current vs Supply Voltage
10
9 TJ = –55°C
8 TJ = 25°C
7
TJ = 125°C
6
5
4
3
2
1
0
10 12 14 16 18 20 22 24 26 28 30
SUPPLY VOLTAGE (V)
1249 G05
GTDR Rise and Fall Time
400
300
200
100
0
0
FALL TIME
RISE TIME
NOTE: GTDR SLEWS
BETWEEN 1V AND 16V
10
20
30
40
50
LOAD CAPACITANCE (nF)
1249 G08
GTDR Source Current
18.5
18.0 VCC = 18V
17.5
17.0
16.5
16.0
15.5
TJ = 125°C
15.0
TJ = 25°C
14.5
14.0
TJ = –55°C
13.5
13.0
0
– 60 –120 –180 –240 –300
SOURCE CURRENT (mA)
1249 G06
Start-Up Supply Current vs
Supply Voltage
550
500
450
400
350
300
–55°C
250
25°C
200
125°C
150
100
50
0
02
4 6 8 10 12 14 16 18 20
SUPPLY VOLTAGE (V)
1249 G09
GTDR Sink Current
1.1
1.0
0.9
0.8
0.7
0.6
0.5
TA = –55°C
0.4
0.3
0.2
TA = 25°C
0.1 TA = 125°C
0
0
60 120 180 240 300
SINK CURRENT (mA)
1249 G07
Switching Frequency
140
130
120
110
100
90
80
70
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
1249 G10
4
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