S-1721 Datasheet, PDF (26/38 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
S-1721 Series
Rev.1.1_00
„ Reference Data (Per Circuit)
(1) Transient Response Characteristics when Input (Ta = 25°C) Common to VR1 and VR2
VOUT = 1.2 V
I_OUT = 30 mA, tr = tf = 5.0 µs, C_OUT = 1.0 µF, C_IN = 1.0 µF
1.30
4.0
1.28
3.5
1.26
3.0
1.24 ^VIN
2.5
1.22
2.0
1.20 ^VOUT
1.5
1.18
1.0
1.16
0.5
1.14
0
−100 −50 0 50 100 150 200 250 300 350
t [µs]
VOUT = 3.0 V
I_OUT = 30 mA, tr = tf = 5.0 µs, C_OUT = 1.0 µF, C_IN = 1.0 µF
3.10
7.0
3.08
6.0
3.06 _VIN
5.0
3.04
4.0
3.02
VOUT
3.0
3.00
2.0
2.98
1.0
2.96
0
−100 −50 0 50 100 150 200 250 300 350
t [µs]
VOUT = 5.0 V
I_OUT = 30 mA, tr = tf = 5.0 µs, C_OUT = 1.0 µF, C_IN = 1.0 µF
5.04
7.0
5.03
VIN
6.5
5.02
6.0
5.01
5.5
5.00
5.0
4.99
VOUT
4.5
4.98
4.0
4.97
3.5
−100 −50 0 50 100 150 200 250 300 350
t [µs]
(2) Transient Response Characteristics of Load (Ta = 25°C)
VOUT = 1.2 V
V_IN = 2.2 V, C_OUT = 1.0 µF, C_IN = 1.0 µF, I_OUT = 10 ↔ 50 mA
1.46
100
1.42
75
1.38
50
1.34 IOUT
25
1.30
0
1.26 VOUT
−25
1.22
−50
1.18
−100
1.14
−125
1.10
−150
−100 −50 0 50 100 150 200 250 300 350
t [µs]
V_OUT = 3.0 V
V_IN = 4.0 V, C_OUT = 1.0 µF, C_IN = 1.0 µF, I_OUT = 10 ↔ 50 mA
3.25
100
3.20
75
3.15
50
3.10 ^IOUT
25
3.05
0
3.00
−25
2.95 ^VOUT
−50
2.90
−75
2.85
−100
2.80
−125
−100 −50 0 50 100 150 200 250 300 350
t [µs]
VOUT = 1.2 V
V_IN = 2.2 V, C_OUT = 1.0 µF, C_IN = 1.0 µF, I_OUT = 10 ↔ 100 mA
1.42
200
1.38
150
1.34
100
1.30 IOUT
50
1.26
0
1.22 VOUT
−50
1.18
−100
1.14
−150
1.10
−200
1.06
−250
−100 −50 0 50 100 150 200 250 300 350
t [µs]
V_OUT = 3.0 V
V_IN = 4.0 V, C_OUT = 1.0 µF, C_IN = 1.0 µF, I_OUT = 10 ↔ 100 mA
3.25
200
3.20
150
3.15
100
3.10 IOUT
50
3.05
0
3.00
2.95
VOUT
−50
−100
2.90
−150
2.85
−200
2.80
−250
−100 −50 0 50 100 150 200 250 300 350
t [µs]
26
Seiko Instruments Inc.