LT3595
TYPICAL PERFORMANCE CHARACTERISTICS
Current Limit vs Temperature
150
SWITCHING FREQUENCY (MHz)
140
CURRENT LIMIT (mA)
130
120
110
100
90
–50 –25
2.4
SCHOTTKY LEAKAGE CURRENT (μA)
2.3
2.2
2.1
2.0
1.9
1.8
1.7
50
25
75
0
TEMPERATURE (°C)
100
125
1.6
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
Switching Frequency
vs Temperature
1.4
1.2
1.0
Schottky Leakage Current
vs Temperature
V
IN
= 45V
0.8
0.6
V
IN
= 24V
0.4
0.2
0
–50 –25
V
IN
= 4.5V
50
25
75
0
TEMPERATURE (°C)
100
125
3595 G09
3595 G10
3595 G11
Switch Saturation Voltage
(V
CESAT
)
700
600
500
T = –40°C
400
300
200
100
0
0
20
40
60
80
100
SWITCH CURRENT (mA)
T = 125°C
T = 25°C
SCHOTTKY FORWARD CURRENT (mA)
SWITCH SATURATION VOLTAGE (mV)
100
Schottky Forward Voltage Drop
80
60
T = 125°C
40
T = 25°C
20
T = – 40°C
0
0
0.2
0.6
0.8
0.4
SCHOTTKY FORWARD DROP (V)
1
3595 G13
Transient Response
V
SHDN
5V/DIV
V
SW
50V/DIV
I
SW
50mA/DIV
I
LED
20mA/DIV
100μs/DIV
V
IN
= 45V
10 LEDS AT 20mA
3595 G14
⎯
OP
⎯
E
⎯
N
⎯
L
⎯
E
⎯
D Waveforms
⎯
I
LED
CH 1
20mA/DIV
OPENLED
5V/DIV
V
SW
CH 1
50V/DIV
I
LED
CH 2
20mA/DIV
20μs/DIV
V
IN
= 45V
10 LEDS AT 20mA
3595 G15
3595f
5
LINER [ LINEAR TECHNOLOGY ]
