S-1721 Seiko Instruments, S-1721 Datasheet - Page 28

• 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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(4) Transient Response Characteristics of Load’s Mutual Interference (Ta = 25°C)
(5) Example of Equivalent Series Resistance vs. Output Current Characteristics (Ta = 25°C)
28
V
V
I
V
V
I
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1721 Series
OUT1
OUT1
OUT1
IN
OUT1
IN
= 2.2 V, C
1.30
1.26
1.22
1.18
1.14
1.26
1.22
1.18
1.14
1.10
1.06
= 6.0 V, C
5.20
5.10
5.00
4.90
4.80
5.10
5.00
4.90
4.80
4.70
4.60
= 10 ↔ 100 mA, I
= 10 ↔ 100 mA, I
= V
= V
−100
−100
0.01
100
OUT2
OUT2
V
I
V
OUT1
−50
−50
OUT1
OUT2
L1
L1
0
= 1.2 V
= 5.0 V
= C
= C
0
0
L2
L2
I
OUT1
V
V
= 1.0 µF, C
= 1.0 µF, C
50 100 150
50 100 150
OUT2
OUT2
OUT1
OUT2
t [µs]
t [µs]
= no load
= no load
I
Stable
OUT
IN
IN
[mA]
200
200
= 1.0 µF,
= 1.0 µF,
C
250
250
IN
= C
300
300
L
150
= 1.0 µF
350
350
Seiko Instruments Inc.
150
100
50
0
−50
150
100
50
0
−50
V
V
I
OUT1
OUT1
IN
= 4.0 V, C
3.10
3.05
3.00
2.95
2.90
3.05
3.00
2.95
2.90
2.85
2.80
= 10 ↔ 100 mA, I
= V
−100
OUT2
V
V
I
−50
OUT1
L1
OUT1
OUT2
= 3.0 V
= C
0
L2
= 1.0 µF, C
50 100 150
OUT2
t [µs]
= no load
IN
200
= 1.0 µF,
250
300
Rev.1.1
350
150
100
50
0
−50
_00