Datasheet

LT3591
4
3591f
V
IN
(V)
0
0
QUIESCENT CURRENT (mA)
1
2
3
4
5
6
36 912
3591 G09
–50°C
125°C
25°C
TEMPERATURE (°C)
0
CURRENT LIMIT (mA)
400
1000
3591 G10
200
600
800
–50 –25 0 25 50 75 100 125
–50 25 75
–25 0
50 100 125
TEMPERATURE (°C)
0
SCHOTTKY LEAKAGE CURRENT (µA)
3
6
9
12
15
3591 G11
V
R
= 10V
V
R
= 16V
V
R
= 20V
TEMPERATURE (°C)
–50 –25
40
OUTPUT CLAMP VOLTAGE (V)
42
45
0
50
75
3591 G12
41
44
43
25
100
125
TEMPERATURE (°C)
–50
INPUT CURRENT (mA)
25 75
3591 G13
–25 0
50 100 125
V
IN
= 3V
4
5
6
3
2
0
1
8
7
TEMPERATURE (°C)
–50
SWITCHING FREQUENCY (kHz)
25 75
3591 G14
–25 0
50 100 125
1000
1050
1100
950
900
750
800
850
1200
1150
TEMPERATURE (°C)
–50
MAXIMUM DUTY CYCLE (%)
25 75
3591 G15
–25 0
50 100 125
98
96
94
90
92
100
V
CAP
(V)
5
SENSE VOLTAGE (mV)
20 30
3591 G16
10 15
25 35
204
200
196
188
192
208
–50°C
125°C
25°C
TEMPERATURE (°C)
–50 –25
188
SENSE VOLTAGE (mV)
196
208
0
50
75
3591 G17
192
204
200
25
100
125
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
(V
CTRL
= 3V) Current Limit vs Temperature
Schottky Leakage Current
vs Temperature
Open-Circuit Output Clamp
Voltage vs Temperature
Input Current in Output Open
Circuit vs Temperature
Switching Frequency
vs Temperature
Maximum Duty Cycle
vs Temperature
Sense Voltage (V
CAP
– V
LED
)
vs V
CAP
Sense Voltage (V
CAP
– V
LED
)
vs Temperature
T
A
= 25°C, unless otherwise specifi ed.