S-1721 Datasheet, PDF (27/38 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

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