LT3593
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
T A = 25°C unless otherwise speci?ed.
600
500
400
(V CESAT )
100°C
6
5
4
Shutdown Current (V CTRL = 0V)
100 ° C
3.50
3.25
3.00
Quiescent Current (V CTRL = 3.6V)
100 ° C
300
200
100
–50°C
25°C
3
2
1
25 ° C
–50 ° C
2.75
2.50
2.25
25 ° C
–50 ° C
0
0
100
200
300
400
500
600
0
2
3
4
5
6
2.00
2
3
4
5
6
SWITCH CURRENT (mA)
3593 G01
V IN (V)
3593 G02
V IN (V)
3593 G03
LED Pin Voltage Drop
(V CAP – V LED )
LED Pin Current Limit
Switching Current Limit vs
Temperature
300
250
V IN = 3.6V
V CAP = 16V
46
V IN = 3.6V
V CAP = 16V
750
V IN = 3.6V
200
100 ° C
45
700
150
25 ° C
44
650
–50 ° C
100
50
43
600
0
0
5
10
15
20
42
–50
–25
0
25
50
75
100
550
–50
–25
0
25 50
75
100
LED CURRENT (mA)
3593 G04
Switching Waveform
I L
TEMPERATURE (°C)
V CTRL
5V/DIV
3593 G05
Transient Response
TEMPERATURE (°C)
3593 G06
200mA/DIV
I L
V CAP
200mA/DIV
200mV/DIV
AC COUPLED
V CAP
V SW
10V/DIV
20V/DIV
V IN = 3.6V
200μs/DIV
3393 G08
V IN = 3.6V
FRONT PAGE
1μs/DIV
3393 G07
FRONT PAGE
APPLICATION CIRCUIT
APPLICATION CIRCUIT
3593f
4
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