Datasheet

6
LT3028
3028f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SHDN1 or SHDN2 Pin Threshold
(Off-to-On)
TEMPERATURE (°C)
–50
SHDN PIN THRESHOLD (V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
50
75
3028 G16
–25
25
100
125
I
L
= FULL
I
L
= 1mA
SHDN PIN VOLTAGE (V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
SHDN PIN INPUT CURRENT (µA)
3028 G17
0123
4
5
678910
T
J
= 25°C
TEMPERATURE (°C)
–50
SHDN PIN INPUT CURRENT (µA)
0
50
75
3028 G18
–25
25
100
125
V
SHDN
= 20V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SHDN1 or SHDN2 Pin Input
Current
SHDN1 or SHDN2 Pin Input
Current
ADJ1 or ADJ2 Pin Bias Current
Output 2 Current Limit Output 2 Current Limit
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (nA)
100
90
80
70
60
50
40
30
20
10
0
0
50
75
3028 G19
–25
25
100
125
INPUT VOLTAGE (V)
0
SHORT-CIRCUIT CURRENT (mA)
2
4
5
3028 G20
1
3
6
7
350
300
250
200
150
100
50
0
V
OUT2
= 0V
T
J
= 25°C
TEMPERATURE (°C)
–50
CURRENT LIMIT (mA)
0
50
75
3028 G21
–25
25
100
125
350
300
250
200
150
100
50
0
V
IN2
= 7V
V
OUT2
= 0V
Output 1 Current Limit
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
INPUT VOLTAGE (V)
0
CURRENT LIMIT (A)
2
4
5
3028 G22
1
3
6
7
V
OUT1
= 0V
T
J
= 25°C
TEMPERATURE (°C)
–50
CURRENT LIMIT (A)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
3028 G23
–25
25
100
125
V
IN1
= 7V
V
OUT1
= 0V
Output 1 Current Limit