Datasheet

LT3502/LT3502A
5
3502fd
Switching Frequency Soft-Start (SHDN)
UVLO
TEMPERATURE (°C)
–50
2.0
2.5
3.5
100
3502 G10
1.5
1.0
0 50 150
0.5
0
3.0
V
IN
(V)
TEMPERATURE (°C)
–50
FREQUENCY (MHz)
1.0
1.5
150
3502 G11
0.5
0
0
50
100
2.5
2.0
LT3502A
LT3502
SHDN PIN VOLTAGE (mV)
0
–0.1
SWITCH CURRENT LIMIT (A)
0
0.2
0.3
0.4
0.9
0.6
400
800
1000
3502 G12
0.1
0.7
0.8
0.5
200 600
1200
1400
1600
typical perForMance characteristics
(T
A
= 25°C unless otherwise noted)
LT3502A Maximum V
IN
for Full
Frequency (V
OUT
= 3.3V)
SHDN Pin Current
SHDN PIN VOLTAGE (V)
0
0
SHDN PIN CURRENT (µA)
50
150
200
250
10
20
25 45
3502 G13
100
5 15
30
35
40
300
TEMPERATURE (°C)
–50
0
CURRENT LIMIT (A)
0.1
0.3
0.4
0.5
1.0
0.7
0
50
3502 G14
0.2
0.8
0.9
0.6
100
150
DA VALLEY CURRENT LIMIT
SW PEAK CURRENT LIMIT
LOAD CURRENT (A)
0
0
V
IN
(V)
5
15
20
25
0.4
45
3502 G16
10
0.2
0.1
0.5 0.6
0.3
0.7
30
35
40
T
A
= 25°C
T
A
= 85°C
Switch Current Limit
LT3502A Maximum V
IN
for Full
Frequency (V
OUT
= 5V)
LOAD CURRENT (A)
0
0
V
IN
(V)
5
15
20
25
0.4
45
3502 G17
10
0.2
0.1
0.5 0.6
0.3 0.7
30
35
40
T
A
= 85°C
T
A
= 25°C
LT3502 Maximum V
IN
for Full
Frequency (V
OUT
= 3.3V)
LOAD CURRENT (A)
0
0
V
IN
(V)
5
15
20
25
0.4
45
3502 G18
10
0.2
0.1
0.5 0.6
0.3 0.7
30
35
40
T
A
= 85°C
T
A
= 25°C
Switch Current Limit
DUTY CYCLE (%)
0
0
CURRENT LIMIT (A)
0.2
0.4
0.6
0.8
1.0
1.2
50 100
3502 G15
LT3502A
LT3502