DC1205A Datasheet, PDF (4/24 Pages) Linear Integrated Systems – 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming

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