LT3592
(TA = 25°C, unless otherwise noted)
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency (2 Red LEDS,
L = 10μH, 900kHz)
Efficiency (1 Red LED,
L = 6.8μH, 900kHz)
Efficiency (2 Red LEDs,
L = 22μH, 400kHz)
100
100
95
90
85
80
75
70
65
60
55
50
45
40
100
95
90
85
80
75
70
65
60
55
50
45
40
95
90
BRIGHT (500mA)
BRIGHT (500mA)
85
80
75
70
65
60
55
50
BRIGHT (500mA)
4
8
12
16
20
24
28
4
8
12
16
20
24
28
4
8
12
16
20
24
28
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3592 G01
3592 G03
3592 G02
Minimum VIN for 500mA Output
Current vs VOUT, L = 22μH,
f = 400kHz (LED Loads)
Minimum VIN for 500mA Output
Current vs VOUT, L = 6.8μH,
f = 900kHz (LED Loads)
Efficiency (2 Red LEDs,
L = 4.7μH, 2.2MHz)
100
95
90
85
80
75
70
65
60
55
50
12
11
10
9
12
11
10
9
BRIGHT (500mA)
8
8
7
7
6
6
5
5
4
4
3
3
2
2
4
8
12
16
20
24
28
2
4
6
8
10
12
2
4
6
8
10
12
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3592 G04
3592 G06
3592 G05
Minimum VIN for 500mA Output
Current vs VOUT, L = 4.7μH,
f = 2.2MHz (LED Loads)
Switch Voltage Drop
vs Switch Current
Switch Voltage Drop at 500mA
vs Temperature
500
450
400
350
300
250
200
150
100
50
400
375
350
325
300
275
250
12
11
10
9
8
7
6
5
4
3
0
2
0
100 200 300 400 500 600 700 800
–50
0
50
100
150
2
4
6
8
10
12
14
16
SWITCH CURRENT (mA)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
3592 G08
3592 G09
3592 G07
3592fc
4
Linear Systems [ Linear Systems ]
