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LT3799 Datasheet, PDF (4/20 Pages) Linear Technology – Offline Isolated Flyback LED Controller with Active PFC
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LT3799
TYPICAL PERFORMANCE CHARACTERISTICS
VIN Start-Up Voltage
vs Temperature
24.0
23.5
23.0
22.5
22.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G01
VREF vs Temperature
2.100
2.075
2.050
2.025
2.000
NO LOAD
1.975
1.950
200µA LOAD
1.925
1.900
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G05
VIN IQ vs Temperature
140
120
100
80
VIN = 24V
VIN = 12V
60
40
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G02
VREF vs VIN
2.100
2.075
2.050
2.025
2.000
1.975
1.950
NO LOAD
200µA LOAD
1.925
1.900
14 16 18 20 22 24 26 28 30 32
VIN (V)
3799 G05
Input Voltage Hysteresis
vs Temperature
12.0
11.6
11.2
10.8
10.4
10.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G03
SENSE Pin Threshold Current
vs Temperature
120
MAX ILIM
100
80
60
40
MIN ILIM
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G06
Maximum Oscillator Frequency
vs Temperature
375
350
325
300
275
250
225
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G07
Minimum Oscillator Frequency
vs Temperature
70
60
50
40
30
20
10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3799 G08
3799p
4
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