S-1721 Seiko Instruments, S-1721 Datasheet - Page 26

• Manufacturer Part Number: S-1721
• Description: SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
• Manufacturer: Seiko Instruments

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(1) Transient Response Characteristics when Input (Ta = 25°C) Common to VR1 and VR2
(2) Transient Response Characteristics of Load (Ta = 25°C)
26
V
I
V
I
V
V
V
V
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1721 Series
OUT
OUT
OUT
OUT
OUT
IN
OUT
IN
Reference Data (Per Circuit)
= 2.2 V, C
1.30
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
1.46
1.42
1.38
1.34
1.30
1.26
1.22
1.18
1.14
1.10
= 4.0 V, C
3.25
3.20
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
= 30 mA, tr = tf = 5.0 µs, C
= 30 mA, tr = tf = 5.0 µs, C
= 1.2 V
= 5.0 V
= 1.2 V
= 3.0 V
−100
−100
−100
−100
V
V
V
V
V
V
I
I
OUT
−50
−50
OUT
−50
OUT
−50
IN
OUT
IN
OUT
OUT
OUT
OUT
= 1.0 µF, C
= 1.0 µF, C
0
0
0
0
50 100 150
50 100 150
50 100 150
50 100 150
IN
t [µs]
t [µs]
t [µs]
t [µs]
OUT
OUT
= 1.0 µF, I
IN
= 1.0 µF, I
= 1.0 µF, C
= 1.0 µF, C
200
200
200
200
OUT
250
250
250
250
OUT
= 10 ↔ 50 mA
IN
IN
300
300
300
300
= 1.0 µF
= 1.0 µF
= 10 ↔ 50 mA
350
350
350
350
Seiko Instruments Inc.
1.5
100
75
50
25
0
−25
−50
−75
−100
−125
4.0
3.5
3.0
2.5
2.0
1.0
0.5
0
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
100
75
50
25
0
−25
−50
−100
−125
−150
V
I
V
V
V
V
OUT
OUT
OUT
IN
OUT
IN
= 2.2 V, C
= 4.0 V, C
3.10
3.08
3.06
3.04
3.02
3.00
2.98
2.96
1.42
1.38
1.34
1.30
1.26
1.22
1.18
1.14
1.10
1.06
3.25
3.20
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
= 30 mA, tr = tf = 5.0 µs, C
= 1.2 V
= 3.0 V
= 3.0 V
−100
−100
−100
V
V
I
V
I
V
OUT
−50
OUT
−50
OUT
−50
OUT
IN
OUT
OUT
OUT
= 1.0 µF, C
= 1.0 µF, C
0
0
0
50 100 150
50 100 150
50 100 150
IN
t [µs]
t [µs]
t [µs]
IN
OUT
= 1.0 µF, I
= 1.0 µF, I
= 1.0 µF, C
200
200
200
OUT
250
250
250
OUT
= 10 ↔ 100 mA
IN
300
300
300
= 10 ↔ 100 mA
= 1.0 µF
Rev.1.1
350
350
350
200
150
100
50
0
−50
−100
−150
−200
−250
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
200
150
100
50
0
−50
−100
−150
−200
−250
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