LT3595A
TYPICAL PERFORMANCE CHARACTERISTICS T A = 25°C, unless otherwise noted.
Switching Frequency
Schottky Leakage Current
150
140
Current Limit vs Temperature
2.4
2.3
vs Temperature
1.4
1.2
vs Temperature
130
2.2
2.1
1.0
V IN = 45V
0.8
120
2.0
0.6
110
100
90
1.9
1.8
1.7
1.6
0.4
0.2
0
V IN = 24V
V IN = 4.5V
–50 –25
0
25
50
75
100
125
–50 –25
0
25
50
75
100
125
–50 –25
0
25
50
75
100
125
TEMPERATURE (°C)
3595A G09
Switch Saturation Voltage
TEMPERATURE (°C)
3595A G10
TEMPERATURE (°C)
3595A G11
700
(V CESAT )
100
Schottky Forward Voltage Drop
600
80
500
400
T = –40°C
60
T = 125°C
300
200
100
T = 125°C
T = 25°C
40
20
T = 25°C
T = –40°C
0
0
20
40
60
80
100
0
0
0.2
0.4
0.6
0.8
1
V SHDN
5V/DIV
V SW
50V/DIV
I SW
50mA/DIV
I LED
20mA/DIV
SWITCH CURRENT (mA)
Transient Response
3595A G12
I LED
CH 1
20mA/DIV
OPENLED
5V/DIV
V SW
CH 1
50V/DIV
I LED
CH 2
20mA/DIV
SCHOTTKY FORWARD DROP (V)
OPENLED Waveforms
3595A G13
100μs/DIV
V IN = 45V
10 LEDS AT 20mA
3595A G14
V IN = 45V
10 LEDS AT 20mA
20μs/DIV
3595A G15
3595af
5
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