LT1963 Series
TYPICAL PERFOR A CE CHARACTERISTICS
U W
LT1963-1.8 GND Pin Current
LT1963-2.5 GND Pin Current
LT1963 GND Pin Current
100
90
80
70
60
50
40
30
20
10
0
10
8
100
90
80
70
60
50
40
30
20
10
0
T
= 25°C
SHDN
T
= 25°C
SHDN
J
V
T
= 25°C
SHDN
J
J
V
= V
V
= V
IN
= 1.8V
= V
IN
IN
= 2.5V
*FOR V
*FOR V
= 1.21V
OUT
*FOR V
OUT
OUT
R
= 1.67, I = 1.5A*
L
L
R
= 4.33, I = 300mA*
L
L
R
= 1.2, I = 1.5A*
L
6
L
4
R
= 2.5, I = 1A*
L
L
R
= 12.1, I = 100mA*
R = 1.8, I = 1A*
L L
L
L
2
R
L
= 5, I = 500mA*
L
R
L
= 3.6, I = 500mA*
L
R
= 121, I = 10mA*
L
L
0
4
0
1
2
3
5
6
7
8
9
10
4
0
1
2
3
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9 10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
1963 G17
1963 G18
1963 G16
LT1963 GND Pin Current
GND Pin Current vs ILOAD
LT1963-3.3 GND Pin Current
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
V
IN
= V +1V
OUT (NOMINAL)
T
= 25°C
SHDN
T
= 25°C
SHDN
J
V
J
= V
V
= V
IN
= 3.3V
IN
*FOR V
*FOR V
= 1.21V
OUT
OUT
R
= 2.2, I = 1.5A*
L
L
R
= 0.81, I = 1.5A*
L
L
R
= 3.3, I = 1A*
L
L
R
L
= 1.21, I = 1A*
L
R
= 6.6, I = 500mA*
L
R
= 2.42, I = 500mA*
L
L
L
4
4
0
1
2
3
5
6
7
8
9
10
0
1
2
3
5
6
7
8
9
10
0.8
0.2 0.4 0.6
OUTPUT CURRENT (A)
0
1.0 1.2 1.4 1.6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
1963 G20
1963 G19
1963 G21
SHDN Pin Threshold (Off-to-On)
SHDN Pin Input Current
SHDN Pin Threshold (On-to-Off)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
I
= 1mA
L
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I
= 1.5A
L
I
= 1mA
L
50
75 100 125
–50
0
25
50
75 100 125
–50
–25
0
25
–25
8
0
2
4
6
10 12 14 16 18 20
TEMPERATURE (°C)
TEMPERATURE (°C)
SHDN PIN VOLTAGE (V)
1963 G22
1963 G23
1963 G24
1963fa
6
Linear Systems [ Linear Systems ]
