LT1963A Series
Typical perForMance characTerisTics
SHDN Pin Input Current
SHDN Pin Input Current
ADJ Pin Bias Current
7
6
5
4
3
2
1
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
SHDN
= 20V
–50 –25
0
25
50
75
100 125
0
2
4
6
10 12 14 16 18 20
–50
–25
0
25
50
75 100 125
8
TEMPERATURE (°C)
TEMPERATURE (°C)
SHDN PIN VOLTAGE (V)
1963A G25
1963A G24
1963A G26
Current Limit
Current Limit
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
3.0
2.5
2.0
1.5
1.0
0.5
0
V
V
= 7V
IN
OUT
= 0V
T = 25°C
J
T = –50°C
J
T = 125°C
J
ΔV
OUT
= 100mV
–50
0
25
50
75 100 125
–25
0
2
4
6
8
10 12 14 16 18 20
TEMPERATURE (°C)
INPUT/OUTPUT DIFFERENTIAL (V)
1963A G28
1963A G27
Reverse Output Current
Reverse Output Current
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
V
V
V
V
V
= 0V
IN
= 1.21V (LT1963A)
OUT
OUT
OUT
OUT
OUT
LT1963A-1.8
LT1963A-1.5
= 1.5V (LT1963A-1.5)
= 1.8V (LT1963A-1.8)
= 2.5V (LT1963A-2.5)
= 3.3V (LT1963A-3.3)
LT1963A
LT1963A-1.8/-2.5/-3.3
LT1963A-3.3
T = 25°C
IN
CURRENT FLOWS INTO
OUTPUT PIN
J
V
LT1963A
= 0V
LT1963A-2.5
V
OUT
V
OUT
= V
(LT1963A)
ADJ
FB
= V (LT1963A-1.5/1.8/-2.5/-3.3)
4
50
TEMPERATURE (°C)
125
0
1
2
3
5
6
7
8
9
10
–50
0
25
75 100
–25
OUTPUT VOLTAGE (V)
1963A G29
1963A G30
1963aff
10
For more information www.linear.com/LT1963A
Linear [ Linear ]
