LT3598(RevA) 데이터 시트보기 (PDF) - Linear Technology
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LT3598 Datasheet PDF : 24 Pages
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LT3598
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current vs PWM Duty Cycle
100
10
1
0.1
0.01
0.001
0.01
0.1
1
10
PWM DUTY CYCLE (%)
100
3598 G10
LED Current vs Temperature
20.3
20.2
20.1
20.0
19.9
19.8
19.7
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3598 G11
LED Current vs CTRL Voltage
25
20
15
10
5
0
0 0.2 0.4 0.6 0.8 1.0 1.2
CTRL VOLTAGE (V)
3598 G12
LED Current Matching
vs Temperature
1.5
1.0
0.5
0.0
–0.5
–1.0
–1.5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3598 G13
OPENLED Sink Current
3.0
LED Current Waveforms
(0.1% PWM)
2.5
PWM
5V/DIV
2.0
SW
20V/DIV
1.5
IL
1A/DIV
1.0
ILED1
50mA/DIV
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3598 G14
20μs/DIV
3598 G15
LED Current Waveforms
(0.1% PWM)
LED Current Waveforms
(90% PWM)
LED Current Waveforms
(90% PWM)
PWM
5V/DIV
SW
20V/DIV
IL
1A/DIV
ILED1
50mA/DIV
2μs/DIV
PWM
5V/DIV
SW
20V/DIV
3598 G16
IL
1A/DIV
ILED1
50mA/DIV
100μs/DIV
PWM
5V/DIV
SW
20V/DIV
3598 G17
IL
1A/DIV
ILED1
50mA/DIV
5μs/DIV
3598 G18
3598fa
6
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