LT3519EMS-1 查看數據表（PDF） - Linear Technology
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LT3519EMS-1 Datasheet PDF : 20 Pages
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LT3519/LT3519-1/LT3519-2
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted)
VISP-VISN Threshold vs VCTRL
300
VIN = 12V
250 VISP = 24V
200
150
100
50
0
–50
0
0.5
1.0
1.5
2.0
VCTRL (V)
3519 G01
VISP-VISN Threshold
vs Temperature
260
258
VIN = 12V
VISP = 24V
256 VCTRL = 2V
254
252
250
248
246
244
242
240
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3519 G04
Switch Current Limit
vs Duty Cycle
1200
1100
1000
900
800
700
600
0
25
50
75
DUTY CYCLE (%)
100
3519 G02
Switch Current Limit
vs Temperature
1200
VIN = 12V
1100
1000
900
800
700
600
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3519 G05
VREF Voltage vs Temperature
2.04
VIN = 12V
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
3519 G03
Oscillator Frequency
vs Temperature (LT3519)
420
410
400
390
380
370
360
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3519 G06
VISP-VISN Threshold vs VISP
260
VIN = 12V
258
VCTRL = 2V
256
254
252
250
248
246
244
242
240
0
10
20
30
40
50
VISP (V)
3519 G07
VREF Voltage vs VIN
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
0
5 10 15 20 25 30 35 40
VIN (V)
3519 G08
4
Quiescent Current vs VIN
3.0
2.5
2.0
1.5
1.0
0.5
0
0
VPWM = 5V
VFB = 1.5V
10
20
30
40
VIN (V)
3519 G09
3519fa
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