LT3497
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
(V
CESAT
)
450
SWITCH SATURATION VOLTAGE (mV)
400
350
–50°C
300
125°C
250
200
150
100
50
0
0
50
100 150 200 250 300 350 400
SWITCH CURRENT (mA)
3497 G01
(T
A
= 25°C unless otherwise specified)
Shutdown Current
(V
CTRL1
= V
CTRL2
= 0V)
15
–50°C
SHUTDOWN CURRENT (µA)
12
25°C
9
125°C
Schottky Forward Voltage Drop
400
SCHOTTKY FORWARD CURRENT (mA)
350
300
250
125°C
200
25°C
150
–50°C
100
50
0
0
0
800
600
SCOTTKY FORWARD DROP (mV)
200
400
1000
3497 G02
25°C
6
3
0
2
4
V
IN
(V)
6
8
10
3497 G03
Sense Voltage (V
CAP
– V
LED
)
vs V
CTRL
240
25°C
OUTPUT CLAMP VOLTAGE (V)
200
SENSE VOLTAGE (mV)
160
–50°C
120
80
40
0
0
500
1000
V
CTRL
(mV)
1500
2000
3497 G04
Open-Circuit Output Clamp
Voltage
34
30
25
INPUT CURRENT (mA)
33
Input Current in Output Open
Circuit
150°C
20
15
25°C
10
–50°C
5
125°C
–50°C
32
25°C
31
125°C
30
0
2
4
V
IN
(V)
6
8
10
3497 G05
0
2
4
6
V
IN
(V)
8
10
3497 G06
Switching Waveform
V
SW
10V/DIV
V
CAP
50mV/DIV
V
CAP
5V/DIV
V
CTRL
5V/DIV
Transient Response
I
L
100mA/DIV
200ms/DIV
V
IN
= 3.6V
FRONT PAGE
APPLICATION CIRCUIT
3497 G07
I
L
200mA/DIV
1ms/DIV
V
IN
= 3.6V
FRONT PAGE
APPLICATION CIRCUIT
3497 G08
3497f
4
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
