Datasheet

LT3593
4
3593f
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
(V
CESAT
)
Shutdown Current (V
CTRL
= 0V)
LED Pin Voltage Drop
(V
CAP
– V
LED
)
Switching Waveform
Quiescent Current (V
CTRL
= 3.6V)
Switching Current Limit vs
Temperature
T
A
= 25°C unless otherwise specifi ed.
Transient Response
V
IN
(V)
2
SHUTDOWN CURRENT (µA)
6
4
2
5
3
1
0
53
3593 G02
64
–50°C
25°C
100°C
LED CURRENT (mA)
0
V
CAP
– V
LED
(mV)
300
200
100
250
150
50
0
155
3593 G04
2010
–50°C
25°C
100°C
V
IN
= 3.6V
V
CAP
= 16V
TEMPERATURE (°C)
–50
LED PIN CURRENT LIMIT (mA)
46
44
45
43
42
750–25 25
3593 G05
10050
V
IN
= 3.6V
V
CAP
= 16V
LED Pin Current Limit
I
L
200mA/DIV
200µs/DIVV
IN
= 3.6V
FRONT PAGE
APPLICATION CIRCUIT
3393 G08
V
CTRL
5V/DIV
V
CAP
10V/DIV
SWITCH CURRENT (mA)
0
SWITCH SATURATION VOLTAGE (mV)
600
400
200
500
300
100
0
400200
3593 G01
600300
–50°C
100 500
100°C
25°C
V
IN
(V)
2
QUIESCENT CURRENT (mA)
3.50
3.00
2.50
3.25
2.75
2.25
2.00
53
3593 G03
64
–50°C
25°C
100°C
TEMPERATURE (°C)
–50
SWITCH CURRNET LIMIT (mA)
750
650
700
600
550
25 50 75–25
3593 G06
1000
V
IN
= 3.6V
V
CAP
200mV/DIV
AC COUPLED
1µs/DIVV
IN
= 3.6V
FRONT PAGE
APPLICATION CIRCUIT
3393 G07
I
L
200mA/DIV
V
SW
20V/DIV