S-1721 Seiko Instruments, S-1721 Datasheet - Page 27

• 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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(3) Transient Response Characteristics of ON/OFF Pin (Ta = 25°C)
V
V
V
V
V
V
Rev.1.1
IN
IN
OUT
IN
OUT
OUT
= 2.2 V, tr = 5.0 µs, C
= 6.0 V, tr = 5.0 µs, C
= 6.0 V, C
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
10.0
2.4
2.0
1.6
1.2
0.8
0.4
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
= 5.0 V
= 1.2 V
= 5.0 V
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
0
0
−100
0
0
_00
V
V
I
V
OUT
−50
ON / OFF
OUT
OUT
ON / OFF
V
= 1.0 µF, C
0
OUT
50
50
V
OUT
50 100 150
OUT
OUT
= 1.0 µF, C
= 1.0 µF, C
t [µs]
t [µs]
t [µs]
100
100
IN
= 1.0 µF, I
200
IN
IN
= 1.0 µF, I
150
= 1.0 µF, I
150
250
OUT
300
= 10 ↔ 50 mA
OUT
OUT
350
200
200
Seiko Instruments Inc.
= 100 mA
= 100 mA
100
75
50
25
0
−25
−50
−75
−100
−125
4.0
2.0
0
−2.0
−4.0
−6.0
−8.0
8.0
6.0
4.0
2.0
0
−2.0
−4.0
−6.0
−8.0
−10.0
−12.0
V
V
V
V
OUT
IN
OUT
IN
= 4.0 V, tr = 5.0 µs, C
= 6.0 V, C
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
7.0
6.0
5.0
4.0
3.0
2.0
1.0
= 5.0 V
= 3.0 V
0
−100
0
I
V
V
OUT
−50
OUT
OUT
ON / OFF
= 1.0 µF, C
0
50
V
OUT
50 100 150
OUT
= 1.0 µF, C
t [µs]
t [µs]
100
IN
= 1.0 µF, I
200
IN
150
= 1.0 µF, I
250
S-1721 Series
OUT
300
= 10 ↔ 100 mA
OUT
350
200
= 100 mA
200
150
100
50
0
−50
−100
−150
−200
−250
6.0
4.0
2.0
0
−2.0
−4.0
−6.0
−8.0
27