S-T111 Datasheet, PDF (18/23 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-T111 Series
Rev.2.1_00
„ Reference Data
(1) Input transient response characteristics
S-T111B15 (Ta = 25°C)
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 0.47 μF, CIN = 0 μF
1.62
1.60
1.58 _VIN
1.56
1.54
1.52
1.50 ^VOUT
1.48
1.46
-40 -20 0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
20 40 60 80 100 120 140 160
t [μs]
S-T111B50 (Ta = 25°C)
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 0.47 μF, CIN = 0 μF
5.12
5.10 _VIN
5.08
5.06
5.04
5.02
5.00 ^VOUT
4.98
4.96
-40 -20 0
8
7
6
5
4
3
2
1
0
20 40 60 80 100 120 140 160
t [μs]
(2) Load transient response characteristics
S-T111B15 (Ta = 25°C)
VIN = 2.5 V, COUT = 0.47 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
1.70
150
1.65
100
1.60 ^IOUT
50
1.55
0
VOUT
1.50
–50
1.45
–100
1.40
–150
-40 -20 0 20 40 60 80 100 120 140 160
t [μs]
S-T111B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 0.47 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
5.20
150
5.15
100
5.10 ^IOUT
50
5.05
0
VOUT
5.00
–50
4.95
–100
4.90
–150
-40 -20 0 20 40 60 80 100 120 140 160
t [μs]
S-T111B30 (Ta = 25°C)
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 0.47 μF, CIN = 0 μF
3.08
3.06
VIN
3.04
3.02
VOUT
3.00
2.98
2.96
-40 -20 0
6
5
4
3
2
1
0
20 40 60 80 100 120 140 160
t [μs]
S-T111B30 (Ta = 25°C)
VIN = 4.0 V, COUT = 0.47 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
3.20
3.15
IOUT
3.10
3.05 V_OUT
3.00
2.95
2.90
-40 -20 0
150
100
50
0
–50
–100
–150
20 40 60 80 100 120 140 160
t [μs]
18
Seiko Instruments Inc.