LT3597IUHG データシートの表示（PDF） - Linear Technology
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LT3597IUHG Datasheet PDF : 24 Pages
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LT3597
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
20,000:1 PWM Dimming (100Hz)
1,000:1 PWM Dimming (100Hz)
PWM
2V/DIV
PWM
2V/DIV
ILED
50mA/DIV
100ns/DIV
3597 G19
ILED
50mA/DIV
2µs/DIV
3597 G20
Open LED Fault
VOUT
5V/DIV
VLED
2V/DIV
ILED
100mA/DIV
VFAULT
5V/DIV
20ms/DIV
3597 G21
Shorted LEDs Fault
VOUT
5V/DIV
VLED
5V/DIV
ILED
100mA/DIV
VFAULT
5V/DIV
10ms/DIV
3597 G22
FAULT Pin Voltage Low
400
350
125°C
300
250
25°C
200
40°C
150
100
50
0
0
0.2
0.4
0.6
0.8
1
FAULT PIN CURRENT (mA)
3597 G23
TSET Voltage for Temperature
Derating
0.8
0.7
0.6
0.5
0.4
0.3
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G24
TSET LED Current Derating
120
VTSET = 0.675V
100
80
60
40
20
0
25
45
65
85 105 125
TEMPERATURE (°C)
3597 G25
3597f
7
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