LT3492 데이터 시트보기 (PDF) - Linear Technology
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LT3492 Datasheet PDF : 20 Pages
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LT3492
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted)
Switch Current Limit vs
Temperature
1200
1000
800
600
400
200
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3492 G04
Switch Frequency vs Temperature
1.4
FADJ = 0.5V
1.3
Reference Voltage
vs Temperature
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3492 G05
VISP-VISN Threshold vs CTRL
120
VISP = 24V
100
80
Switch Frequency vs FADJ
2250
2000
1750
1500
1250
1000
750
500
250
0
0 0.2 0.4 0.6 0.8 1.0 1.2
FADJ (V)
3492 G06
VISP-VISN Threshold vs VISP
103
CTRL = 1.2V
102
101
1.2
60
100
40
99
1.1
20
98
1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3492 G07
VISP-VISN Threshold vs
Temperature
103
CTRL = 1.2V
VISP = 24V
102
101
100
99
98
0
0 0.2 0.4 0.6 0.8
CTRL (V)
1 1.2
3492 G08
PMOS Turn On Waveforms
5V
PWM
0V
60V
TG
50V
97
0
10 20 30 40 50 60
VISP (V)
3492 G09
PMOS Turn Off Waveforms
5V
PWM
0V
60V
TG
50V
97
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3492 G10
VISP = 60V
QG FET = 6nC
200ns/DIV
3492 G11
VISP = 60V
QG FET = 6nC
200ns/DIV
3492 G12
3492f
5
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