HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.5.0_00
S-1112/1122 Series
Reference Data
(1) Input transient response characteristics
S-1112B15 (Ta = 25°C)
S-1112B30 (Ta = 25°C)
IOUT = 30 mA, tr = tf = 5.0 µs, COUT = 0.47 µF, CIN = 0 µF
IOUT = 30 mA, tr = tf = 5.0 µs, COUT = 0.47 µF, CIN = 0 µF
1.62
1.60
1.58
1.56
1.54
1.52
1.50
1.48
1.46
3.08
6
5
4
3
2
1
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
3.06
VIN
VIN
3.04
3.02
VOUT
3.00
2.98
VOUT
2.96
1600
-40 -20
0
20 40 60 80 100 120 140 160
-40 -20
0
20 40 60 80 100 120 140
t [µs]
t [µs]
S-1112B50 (Ta = 25°C)
IOUT = 30 mA, tr = tf = 5.0 µs, COUT = 0.47 µF, CIN = 0 µF
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
VIN
VOUT
-40 -20
0
20 40 60 80 100 120 140 160
t [µs]
(2) Load transient response characteristics
S-1112B15 (Ta = 25°C)
S-1112B30 (Ta = 25°C)
VIN = 2.5 V, COUT = 0.47 µF, CIN = 1.0 µF, IOUT = 50↔100 mA
VIN = 4.0 V, COUT = 0.47 µF, CIN = 1.0 µF, IOUT = 50↔100 mA
150
150
100
50
1.70
1.65
1.60
1.55
1.50
1.45
1.40
3.20
100
3.15
IOUT
IOUT
50
3.10
0
0
3.05
3.00
2.95
2.90
VOUT
VOUT
–50
–50
–100
–150
–100
–150
-40 -20
0
20 40 60 80 100 120 140 160
-40 -20
0
20 40 60 80 100 120 140 160
t [µs]
t [µs]
S-1112B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 0.47 µF, CIN = 1.0 µF, IOUT = 50↔100 mA
150
100
50
5.20
5.15
5.10
5.05
5.00
4.95
4.90
IOUT
0
VOUT
–50
–100
–150
-40 -20
0
20 40 60 80 100 120 140 160
t [µs]
Seiko Instruments Inc.
21
SII [ SEIKO INSTRUMENTS INC ]
