HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series
Rev.5.0_00
18
Seiko Instruments Inc.
Reference Data
(1) Input transient response characteristics
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 0.47 μF, CIN = 0 μF IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 1.0 μF, CIN = 0 μF
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
V
IN
V
OUT
-20
-10
0
10
20
30 40
50
60
70
80
VIN [V]
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
V
IN
V
OUT
-20 -10 0 10 20 30
40
50
60
70
80
VIN [V]
t [μs]
t [μs]
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 2.2 μF, CIN = 0 μF
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
V
IN
V
OUT
-20
-10
0
10
20
30 40
50
60
70
80
VIN [V]
t [μs]
(2) Load transient response characteristics
VIN = 4.0 V, COUT = 0.47 μF, CIN = 1.0 μF, IOUT = 50↔100 mA VIN = 4.0 V, COUT = 1.0 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
VOUT [V]
0
2
4
6 8
10
12
14
-4
-2
16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
VOUT [V]
0 2 4 6
8
10
12
14
-4 -2 16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
t [μs]
t [μs]
VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
VOUT [V]
0
2
4
6 8
10
12
14
-4
-2
16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
t [μs]
