HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.0_02
S-1170 Series
Reference Data
(1) Input transient response characteristics
S-1170B15
S-1170B30
IOUT = 100 mA, tr = tf = 5.0 µs, COUT = 4.7 µF, CIN = 4.7 µF
IOUT = 100 mA, tr = tf = 5.0 µs, COUT = 4.7 µF, CIN = 4.7 µF
6.0
5.0
4.0
3.0
2.0
1.0
0
3.08
3.06
3.04
3.02
3.00
2.98
2.96
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
VIN
VIN
VOUT
VOUT
0
10
20
30
40
50
60
0
10
20
30
40
50
60
−20 −10
−20 −10
t [µs]
t [µs]
S-1170B50
IOUT = 100 mA, tr = tf = 5.0 µs, COUT = 4.7 µF, CIN = 4.7 µF
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
VIN
VOUT
600
0
10
20
30
40
50
−20 −10
t [µs]
(2) Load transient response characteristics
S-1170B15 (Ta = 25°C)
VIN = 2.5 V, COUT = 4.7 µF, CIN = 4.7 µF, IOUT = 50↔100 mA
S-1170B30 (Ta = 25°C)
VIN = 4.0 V, COUT = 4.7 µF, CIN = 4.7 µF, IOUT = 50↔100 mA
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
1.70
1.65
1.60
1.55
1.50
1.45
150
100
50
IOUT
IOUT
0
0
VOUT
VOUT
−50
−100
−150
−50
−100
−150
1.4020
0
20 40
60
80 100 120 140 160
0
20 40
60 80 100 120 140 160
−
−
20
t [µs]
t [µs]
S-1170B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 4.7 µF, CIN = 4.7 µF, IOUT = 50↔100 mA
150
100
50
5.20
5.15
5.10
5.05
5.00
4.95
IOUT
0
VOUT
−50
−100
−150
4.9020
0
20
40
60
80 100 120 140 160
−
t [µs]
21
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
