LT3590
TYPICAL APPLICATIONS
12V or 24V Supply for a Single LED, 50mA Current
Conversion Efficiency
80
75
70
65
C2
2.2μF
12V
24V
R1
4Ω
50mA
V
IN
12V OR 24V
60
55
C1
1μF
V
IN
LED
SW
L1
CONTROL
>1.5V
CTRL
VREG
220μH
50
45
40
LT3590
GND
3590 TA05a
C3
0.1μF
10
20
LED CURRENT (mA)
40
0
50
30
3590 TA05b
48V Supply for Two Strings of 10 LEDs, 25mA Current
Conversion Efficiency
100
90
C2
1μF
25mA
25mA
R1
4Ω
80
70
60
50
40
V
IN
48V
C1
1μF
V
IN
LED
SW
L1
CONTROL
>1.5V
CTRL
VREG
0
5
10
15
20
25
470μH
LT3590
GND
LED CURRENT (mA)
3590 TA06b
3590 TA06a
C3
0.1μF
12V Supply for a 3 LED String, 50mA Current
Conversion Efficiency
C2
100
90
80
70
60
50
40
1μF
R1
4Ω
50mA
V
IN
12V
C1
1μF
V
IN
LED
SW
L1
CONTROL
>1.5V
CTRL
VREG
220μH
LT3590
GND
3590 TA07a
C3
0.1μF
10
20
LED CURRENT (mA)
40
0
50
30
3590 TA07b
L1: MURATA LQH32CN-221
3590f
13
Linear [ Linear ]
