S-1172 Seiko Instruments, S-1172 Datasheet - Page 22

• Manufacturer Part Number: S-1172
• Description: HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
• Manufacturer: Seiko Instruments

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(1) Characteristics of Input Transient Response (Ta = 25°C)
(2) Characteristics of Load Transient Response (Ta = 25 ° C)
22
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1172 Series
S-1172B10
I
S-1172B50
I
S-1172B10
V
S-1172B30
V
OUT
OUT
IN
IN
Reference Data
w
= 2.0 V, C
= 4.0 V, C
1.20
1.15
1.10
1.05
1.00
0.95
0.90
3.20
3.15
3.10
3.05
3.00
2.95
2.90
= 100 mA, tr = tf = 5.0 µs, C
1.15
1.10
1.05
1.00
0.95
= 100 mA, tr = tf = 5.0 µs, C
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
−200
−200
−200
−200
w
V
V
I
I
V
V
OUT
OUT
V
V
OUT
OUT
OUT
OUT
IN
OUT
IN
OUT
0
0
0
0
= 4.7 µ F, C
= 4.7 µ F, C
.
200
200
200
200
400
400
400
d
400
IN
IN
t [µs]
t [µs]
t [µs]
= 4.7 µ F, I
= 4.7 µ F, I
t [µs]
600
600
600
600
OUT
OUT
a
= 4.7 µF, C
= 4.7 µF, C
800 1000 1200
800 1000 1200
800 1000 1200
800 1000 1200
OUT
OUT
= 50 ↔ 100 mA
= 50 ↔ 100 mA
t
IN
IN
Seiko Instruments Inc.
a
= 4.7 µF
= 4.7 µF
150
100
150
100
50
0
50
0
−50
−100
−150
−50
−100
−150
1
0
7
6
5
4
3
2
0
4
3
2
1
s
S-1172B30
I
V
V
OUT
IN
IN
h
= 2.0 V, C
= 4.0 V, C
1.40
1.30
1.20
1.10
1.00
0.90
0.80
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
3.10
3.05
2.95
2.90
= 100 mA, tr = tf = 5.0 µs, C
3.20
3.15
3.00
−200
−200
−200
V
V
e
I
I
OUT
OUT
V
V
OUT
OUT
OUT
OUT
IN
OUT
0
0
0
= 4.7 µ F, C
= 4.7 µ F, C
e
200
200
200
400
400
400
IN
IN
t
t [µs]
t [µs]
= 4.7 µ F, I
= 4.7 µ F, I
t [µs]
600
600
600
OUT
4
= 4.7 µF, C
800 1000 1200
800 1000 1200
800 1000 1200
OUT
OUT
= 100 ↔ 500 mA
= 100 ↔ 500 mA
u
Rev.1.1
IN
= 4.7 µF
.
400
200
0
400
200
0
600
−200
−400
−600
600
−200
−400
−600
−800
6
5
0
4
3
2
1
_00
c
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