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Rev.1.2
_00
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-T111 Series
Reference Data
(1) Input transient response characteristics
Seiko Instruments Inc.
17
S-T111B15 (Ta
=
25°C)
I
OUT
=
30 mA, tr
=
tf
=
5.0
μ
s, C
OUT
=
0.47
μ
F, C
IN
=
0
μ
F
S-T111B30 (Ta
=
25°C)
I
OUT
=
30 mA, tr
=
tf
=
5.0
μ
s, C
OUT
=
0.47
μ
F, C
IN
=
0
μ
F
V
O
1.62
1.60
1.58
1.56
1.54
1.52
1.50
1.48
1.46
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
IN
V
OUT
-40
-20
0
20
40
60
80
100
120
140
160
V
I
V
O
-40
-20
0
20
40
60
80
100
120
140
160
V
IN
V
OUT
3.08
3.06
3.04
3.02
3.00
2.98
2.96
6
5
4
3
2
1
0
V
I
S-T111B50 (Ta
=
25°C)
I
OUT
=
30 mA, tr
=
tf = 5.0
μ
s, C
OUT
=
0.47
μ
F, C
IN
=
0
μ
F
t [
μ
s]
t [
μ
s]
V
O
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
8
7
6
5
4
3
2
1
0
V
IN
V
OUT
-40
-20
0
20
40
60
80
100
120
140
160
V
I
(2) Load transient response characteristics
t [
μ
s]
S-T111B15 (Ta
=
25°C)
V
IN
=
2.5 V, C
OUT
=
0.47
μ
F, C
IN
=
1.0
μ
F, I
OUT
=
50
100 mA
S-T111B30 (Ta
=
25°C)
V
IN
=
4.0 V, C
OUT
=
0.47
μ
F, C
IN
=
1.0
μ
F, I
OUT
=
50
100 mA
V
O
0
20
40
60
80
100
120
140
-40
-20
160
I
OUT
V
OUT
1.70
1.65
1.60
1.55
1.50
1.45
1.40
150
100
50
0
–50
–100
–150
I
O
V
O
0
20
40
60
80
100
120
140
-40
-20
160
I
OUT
V
OUT
150
100
50
0
–50
–100
–150
3.20
3.15
3.10
3.05
3.00
2.95
2.90
I
O
S-T111B50 (Ta
=
25°C)
V
IN
=
6.0 V, C
OUT
=
0.47
μ
F, C
IN
=
1.0
μ
F, I
OUT
=
50
100 mA
t [
μ
s]
t [
μ
s]
V
O
0
20
40
60
80
100
120
140
-40
-20
160
V
OUT
I
OUT
5.20
5.15
5.10
5.05
5.00
4.95
4.90
150
100
50
0
–50
–100
–150
I
O
t [
μ
s]