LT1963A Linear Technology, LT1963A Datasheet - Page 9

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

TYPICAL PERFOR A CE CHARACTERISTICS
–100
– 20
–10
–15
200
150
100
–50
50
45
40
35
30
25
20
15
10
0.6
0.4
0.2
– 5
10
0.0001
50
5
0
5
0
0
0
–50
Load Regulation
0
RMS Output Noise vs Load
Current (10Hz to 100kHz)
LT1963A-3.3 Transient Response
V
C
C
C
V
V
∆I
IN
IN
OUT
OUT
IN
IN
(LT1963A-1.8/-2.5/-3.3)
2
L
–25
= 4.3V
= 3.3µF TANTALUM
= V
= 2.7V (LT1963A/LT1963A-1.5)
= 1mA TO 1.5A
= 10µF TANTALUM
= 10µF
0.001
4
OUT(NOMINAL)
LT1963A-1.8
0
LOAD CURRENT (A)
6
TEMPERATURE (°C)
LT1963A-2.5
0.01
W
8
TIME (µs)
25
LT1963A-1.8
LT1963A-1.5
10 12 14 16 18 20
LT1963A
+1V
LT1963A-2.5
50
U
LT1963A-3.3
0.1
LT1963A-3.3
LT1963A-1.5
75
LT1963A
1
100
1963 G34
1063 G36
1963 G38
125
10
100µV/DIV
V
OUT
LT1963A-3.3 10Hz to 100kHz Output Noise
C
I
LOAD
OUT
= 10µF
= 1.5A
0.01
–100
–150
150
100
–50
1.0
0.1
1.5
1.0
0.5
50
0
0
10
0
LT1963A-3.3 Transient Response
Output Noise Spectral Density
C
I
LT1963A-3.3
L
OUT
=1.5A
50 100 150
LT1963A-1.8
= 10µF
100
FREQUENCY (Hz)
LT1963A-1.5
1ms/DIV
200
TIME (µs)
V
C
C
+10 1µF CERAMIC
IN
IN
OUT
250 300 350 400 450 500
1k
= 4.3V
= 33µF TANTALUM
LT1963A-2.5
= 100µF TANTALUM
LT1963A Series
10k
LT1963A
1963 G35
1963 G39
100k
1963 G37
1963af
9