HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.2_00
S-1132 Series
(3) ON / OFF Pin Transient Response Characteristics (Ta = 25°C)
S-1132B15
S-1132B30
VIN = 2.5 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 80 mA
VIN = 4.0 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 80 mA
5
4
3
2
1
0
10
8
6
6
VON/OFF
4
4
VON/OFF
6
2
2
4
0
0
2
-2
-4
-6
-2
-4
-6
VOUT
VOUT
0
-1
-2
-0.4-0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
t [ms]
-0.4-0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
t [ms]
S-1132B50
V
IN = 6.0 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 80 mA
14
12
10
8
8
VON/OFF
6
4
2
6
0
4
2
0
-2
-2
-4
-6
-8
VOUT
-0.4-0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
t [ms]
(4) Input transient response characteristics - Capacity Value characteristics (Ta = 25°C)
S-1132B15
VIN = 2.5 V → 4.5 V, tr = 5 µF, IOUT = 100 mA
VIN = 4.5 V → 2.5 V, tr = 5 µF, IOUT = 100 mA
1.70
6
1.8
1.7
1.6
1.5
1.4
1.3
1.2
6
V
IN
1.65
4
4
VIN
2
2
1.60
1.55
1.50
1.45
1.40
C = 1.0µ
V
OUT
0
0
VOUT
C = 1.0µ
C = 0.1µ
-2
-4
-6
-2
-4
-6
C = 0.1µ
-80 -60 -40 -20
0
20 40 60 80
-80 -60 -40 -20
0
20 40 60 80
t [µs]
t [µs]
(5) Load transient response characteristics - Capacity Value characteristics (Ta = 25°C)
S-1132B15
V
IN = 2.5 V, IOUT = 1 → 50 mA
VIN = 2.5 V, IOUT = 50 → 1 mA
2.2
100
50
0
2.2
100
50
0
IOUT
2.0
2.0
1.8
1.6
1.4
1.2
1.0
IOUT
1.8
1.6
1.4
1.2
1.0
C = 1.0µ
C = 1.0µ
C = 0.1µ
VOUT
V
OUT
C = 0.1µ
-100-80 -60 -40 -20
0
20 40 60 80 100
-200 -150 -100 -50
0
50 100 150 200
t [µs]
t [µs]
Seiko Instruments Inc.
21
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