Datasheet

LT3590
4
3590f
SWITCH CURRENT (mA)
20
SWITCH SATURATION VOLTAGE (V)
0.6
0.7
100
0.5
0.4
0.2
40
60
80
0.3
0.8
3590 G01
–40°C
25°C
125°C
SCHOTTKY FORWARD CURRENT (mA)
0
SCHOTTKY FORWARD DROP (V)
0.8
0.9
1.0
200
0.7
0.6
0.4
50
100
150
0.5
1.2
1.1
3590 G02
–40°C
25°C
125°C
V
IN
(V)
0
10
SHUTDOWN CURRENT (μA)
12
14
16
18
20
10
20 30 40
3590 G03
50 60
V
CTRL
= 0V
T
A
= 25°C
TEMPERATURE (°C)
–50
SHUTDOWN CURRENT (μA)
25
18
14
–25 0 50
12
10
20
16
75 100 125
3590 G04
V
CTRL
= 0V
V
IN
= 48V
0
400
QUIESCENT CURRENT (μA)
450
500
550
600
10 20 30 40
3590 G05
50 60
V
IN
(V)
V
CTRL
= 3.3V
T
A
= 25°C
TEMPERATURE (°C)
–50
SCHOTTKY LEAKAGE CURRENT (μA)
25
1.0
–25 0 50
0.5
0
2.0
1.5
75 100 125
3590 G06
V
IN
= 48V
V
IN
= 24V
V
IN
= 4.5V
1μs/DIV
V
SW
20V/DIV
I
L
20mA/DIV
3590 G07
V
IN
= 48V
I
LED
= 50mA
10 WHITE LEDs
L = 470μH (COILCRAFT)
40μs/DIV
CTRL
5V/DIV
I
LED
50mA/DIV
V
SW
50V/DIV
I
L
50mA/DIV
3590 G08
V
IN
= 48V
I
LED
= 50mA
10 BLUE LEDs
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
(V
CESAT
) Schottky Forward Voltage Drop
Shutdown Quiescent
Current vs V
IN
Shutdown Quiescent Current
vs Temperature Quiescent Current Schottky Leakage Current
Switching Waveform Transient Response