LT1963A Linear Technology, LT1963A Datasheet - Page 8

• Manufacturer Part Number: LT1963A
• Description: 1.5A/ Low Noise/ Fast Transient Response LDO Regulators
• Manufacturer: Linear Technology

LT1963A Series
TYPICAL PERFOR A CE CHARACTERISTICS
8
80
70
60
50
40
30
20
10
0
10
Ripple Rejection
I
V
L
IN
= 0.75A
= V
3.0
2.5
2.0
1.5
1.0
0.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
100
OUT(NOMINAL)
C
0
0
OUT
0
Reverse Output Current
0
Current Limit
LT1963A-1.5
= 100µF TANTALUM
+10 1µF CERAMIC
∆V
LT1963A-1.8
FREQUENCY (Hz)
1
2
LT1963A
OUT
INPUT/OUTPUT DIFFERENTIAL (V)
1k
C
4
2
OUT
+1V + 50mV
T
= 100mV
T
J
OUTPUT VOLTAGE (V)
J
3
= 125°C
= 10µF TANTALUM
6
= 25°C
10k
8
4
10
5
RMS
W
100k
12
6
RIPPLE
LT1963A-2.5
1963 G31
T
14
7
U
J
LT1963A-3.3 T
1M
= – 50°C
16
8
18
1963 G29
1963 G27
9
10
20
V
CURRENT FLOWS INTO
OUTPUT PIN
V
V
76
74
72
70
68
66
64
62
J
IN
OUT
OUT
– 50
= 25°C
= 0V
Ripple Rejection
I
V
RIPPLE AT f = 120Hz
= V
= V
L
IN
= 0.75A
– 25
ADJ
FB
= V
(LT1963A-1.5/1.8/-2.5/-3.3)
OUT(NOMINAL)
(LT1963A)
0
TEMPERATURE (°C)
25
+1V + 0.5V
50
75
P-P
100
1963 G32
125
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
–50
–50
Current Limit
Reverse Output Current
V
V
V
V
V
V
V
V
IN
OUT
IN
OUT
OUT
OUT
OUT
OUT
–25
= 7V
–25
= 0V
= 0V
= 1.21V (LT1963A)
= 1.5V (LT1963A-1.5)
= 1.8V (LT1963A-1.8)
= 2.5V (LT1963A-2.5)
= 3.3V (LT1963A-3.3)
3.0
2.5
2.0
1.5
1.0
0.5
0
–50
LT1963A Minimum Input Voltage
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
–25
LT1963A-1.8/-2.5/-3.3
25
25
I
L
0
50
I
= 1.5A
50
L
TEMPERATURE (°C)
= 100mA
LT1963A
25
75
75
50
100
100
1963 G28
1963 G30
75
125
125
I
L
= 500mA
100
1963 G33
1963af
125