LT3518
TYPICAL PERFORMANCE CHARACTERISTICS
V
ISP
– V
ISN
Threshold vs V
CTRL
120
V
IN
= 5V
V
ISP
= 24V
100 V
C
= 1V
T
A
= 25°C
80
60
40
20
0
0
0.2
0.4
CURRENT LIMIT (A)
3.0
2.5
2.0
1.5
1.0
0.5
0
0
T
A
= 25°C
20
40
60
DUTY CYCLE (%)
80
100
3518 G02
Switch Current Limit
vs Duty Cycle
V
ISP
– V
ISN
THRESHOLD (mV)
0.6 0.8 1.0
V
CTRL
(V)
1.2
1.4
1.6
3518 G01
Oscillator Frequency vs R
T
10000
OSCILLATOR FREQUENCY (kHz)
T
A
= 25°C
V
ISP
– V
ISN
THRESHOLD (mV)
105
104
103
102
101
100
99
98
97
96
100
1
10
R
T
(kΩ)
100
3518 G03
V
ISP
– V
ISN
Threshold vs
Temperature
V
CTRL
= 2V
V
IN
= 5V
T
A
= 25°C
V
C
= 1V
1000
95
0
10
30
20
V
ISP
(V)
40
50
3518 G04
Switch Current Limit vs
Temperature
3.0
V
IN
= 5V
OSCILLATOR FREQUENCY (MHz)
2.5
Oscillator Frequency vs
Temperature
V
IN
= 5V
R
T
= 6.04k
2.8
CURRENT LIMIT (A)
2.3
2.6
2.1
2.4
1.9
2.2
1.7
2.0
–40 –15 –10 35 60 85 110 135 160
TEMPERATURE (°C)
3518 G05
1.5
–40 –20 0
20 40 60 80 100 120 140 160
TEMPERATURE (°C)
3518 G06
3518fb
5
LINER [ LINEAR TECHNOLOGY ]
