S-1121 Seiko Instruments, S-1121 Datasheet - Page 21

• Manufacturer Part Number: S-1121
• Description: (S-1111 / S-1121) HIGH RIPPLE-REJECTION LOW DROPOUT
• Manufacturer: Seiko Instruments

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Rev.4.1
(1) Input transient response characteristics
I
(2) Load transient response characteristics
(3) Shutdown pin transient response characteristics
S-1111B15 (Ta = 25 °C)
V
S-1111B50 (Ta = 25 °C)
V
OUT
V
I
IN
IN
Reference Data
OUT
IN
= 2.5 V, C
= 6.0 V, C
= 30 mA, tr = tf = 5.0 μ s, C
3.025
3.015
3.005
2.995
3.15
3.05
2.95
= 4.0 V, C
3.02
3.01
= 50 ↔ 100 mA
3.2
3.1
2.9
-0.5
2.5
1.5
0.5
3
-1
3
7
6
5
4
3
2
1
0
2
1
0
-2
-20
-10
-10
_00
0
OUT
OUT
0
OUT
0
0
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
= 2.2 μ F, C
= 2.2 μ F, C
2
20
= 2.2 μ F, C
10
10
V
V
ON/OFF
ON/OFF
4
40
20
20
6
60
30
30
IN
IN
t [ μ s]
t [ μ s]
IN
t [ μ s]
t [ μ s]
= 1.0 μ F
= 1.0 μ F
OUT
8
80
V
40
40
= 1.0 μ F,
V
OUT
I
OUT
OUT
= 2.2 μ F, C
10
100 120 140 160 180
V
50
50
IN
12
60
60
V
OUT
14
70
70
V
IN
OUT
= 0 μ F
16
80
80
18
90
90
-100
-150
150
100
-50
Seiko Instruments Inc.
6
5
4
3
2
1
0
50
-2
-4
-6
-8
-1
-2
-3
0
8
6
4
2
0
3
2
1
0
S-1111B30 (Ta = 25 °C)
I
V
OUT
IN
V
I
OUT
IN
= 4.0 V, C
= 30 mA, tr = tf = 5.0 μ s, C
3.025
3.015
3.005
2.995
3.02
3.01
= 4.0 V, C
= 50 ↔ 100 mA
3.15
3.05
2.95
-1
3.2
3.1
2.9
3
5
4
3
2
1
0
3
-20
-10
-2
OUT
0
0
0
OUT
= 2.2 μ F, C
20
10
= 4.7 μ F, C
2
V
ON/OFF
40
20
4
60
30
6
IN
t [ μ s]
t [ μ s]
IN
t [ μ s]
= 1.0 μ F
OUT
80
40
= 1.0 μ F,
8
I
= 4.7 μ F, C
100 120 140 160 180
OUT
S-1111/1121 Series
V
50
V
10
IN
OUT
60
12
V
OUT
70
14
IN
V
OUT
= 0 μ F
80
16
90
18
6
5
4
3
2
1
0
-100
-150
-2
-4
-6
150
100
6
4
2
0
-50
50
0
21