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LT1249C Datasheet(PDF) 4 Page - Linear Technology

Part # LT1249C
Description  Power Factor Controller
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1249C Datasheet(HTML) 4 Page - Linear Technology

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4
LT1249
TYPICAL PERFORMANCE CHARACTERISTICS
IAC (µA)
0
300
150
0
1249 G04
250
500
VAOUT = 6.5V
VAOUT = 6V
VAOUT = 5.5V
VAOUT = 5V
VAOUT = 4.5V
VAOUT = 4V
VAOUT = 3.5V
VAOUT = 3V
VAOUT = 2.5V
VAOUT = 2V
LOAD CAPACITANCE (nF)
0
400
300
200
100
0
10
20
30
40
1249 G08
50
RISE TIME
NOTE: GTDR SLEWS
BETWEEN 1V AND 16V
FALL TIME
Start-Up Supply Current vs
Supply Voltage
Switching Frequency
TEMPERATURE (
°C)
–75
75
1249 G10
–25
25
125
140
130
120
110
100
90
80
70
–50
0
50
100
JUNCTION TEMPERATURE (
°C)
–75
75
7.536
7.524
7.512
7.500
7.488
7.476
7.464
7.452
7.440
7.428
1249 G03
–50
150
–25
0
25
50
100 125
SUPPLY VOLTAGE (V)
10
10
9
8
7
6
5
4
3
2
1
0
26
1249 G05
14
12
16
20
24
28
18
22
30
TJ = –55°C
TJ = 25°C
TJ = 125°C
Supply Current vs Supply Voltage
GTDR Source Current
SOURCE CURRENT (mA)
0
18.5
18.0
17.5
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
1249 G06
–300
TJ = 25°C
TJ = 125°C
VCC = 18V
TJ = –55°C
–60
–120
–180
–240
GTDR Sink Current
SINK CURRENT (mA)
0
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1249 G07
300
TA = 125°C
TA = –55°C
60
120
180
240
TA = 25°C
GTDR Rise and Fall Time
Reference Voltage vs
Temperature
Multiplier Current
SUPPLY VOLTAGE (V)
0
550
500
450
400
350
300
250
200
150
100
50
0
1249 G09
20
125
°C
–55
°C
25
°C
4
812
16
26
10
14
18


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