LT1963A Series
Typical perForMance characTerisTics
Ripple Rejection
Ripple Rejection
LT1963A Minimum Input Voltage
80
70
60
50
40
30
20
10
0
76
74
72
70
68
66
64
62
3.0
2.5
2.0
1.5
1.0
0.5
0
I
= 1.5A
L
I
= 500mA
L
I
L
= 100mA
C
OUT
= 100µF TANTALUM
+10 × 1µF CERAMIC
C
= 10µF TANTALUM
OUT
I
= 0.75A
L
I
= 0.75A
L
V
= V
+1V + 0.5V
IN
OUT(NOMINAL) P-P
V
= V
+1V + 50mV
10k
RIPPLE
RMS
IN
OUT(NOMINAL)
RIPPLE AT f = 120Hz
–50 –25 25
TEMPERATURE (°C)
10
100
1k
100k
1M
50
75
100 125
50
TEMPERATURE (°C)
100 125
0
–50
–25
0
25
75
FREQUENCY (Hz)
1963A G31
1963A G32
1963A G33
Load Regulation
Output Noise Spectral Density
10
1.0
0.1
C
L
= 10µF
OUT
I
=1.5A
5
0
LT1963A-1.5
LT1963A
LT1963A-2.5
LT1963A-1.8
LT1963A-3.3
–5
LT1963A-2.5
LT1963A-3.3
–10
–15
–20
LT1963A
V
V
= V
+1V
IN
OUT(NOMINAL)
LT1963A-1.8
LT1963A-1.5
(LT1963A-1.8/-2.5/-3.3)
= 2.7V (LT1963A/LT1963A-1.5)
IN
L
ΔI = 1mA TO 1.5A
0.01
50
100 125
–50 –25
0
25
75
10
100
1k
10k
100k
FREQUENCY (Hz)
TEMPERATURE (°C)
1963A G35
1963A G34
RMS Output Noise vs Load
Current (10Hz to 100kHz)
LT1963A-3.3 10Hz to 100kHz Output Noise
50
C
OUT
= 10µF
45
40
35
30
25
20
15
10
5
LT1963A-3.3
LT1963A-2.5
LT1963A-1.8
V
OUT
100µV/DIV
LT1963A-1.5
LT1963A
0
1963A G37
C
LOAD
= 10µF
= 1.5A
0.0001 0.001
0.01
0.1
1
10
1ms/DIV
OUT
I
LOAD CURRENT (A)
1963A G36
1963aff
11
For more information www.linear.com/LT1963A
Linear [ Linear ]
