S-1137 Datasheet, PDF (29/47 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1_01
S-1137 Series
(6) Rush Current Characteristics (Ta = 25°C)
VOUT = 1.2 V, VIN = 2.2 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 0.22 nF
2.5
VON/OFF
200
2.0
160
1.5
VOUT
120
1.0
80
0.5
0
−0.2 0
40
IRUSH
0
0.2 0.4 0.6 0.8 1.0
t [ms]
VOUT = 1.2 V, VIN = 2.2 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 22.0 nF
2.5
100
VON/OFF
2.0
80
1.5
60
1.0
40
0.5
0
−5
VOUT
20
IRUSH
0
0 5 10 15 20 25
t [ms]
VOUT = 3.5 V, VIN = 4.5 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 0.22 nF
5
200
4
VON/OFF
VOUT
3
160
120
2
80
1
IRUSH
40
0
−0.2 0
0
0.2 0.4 0.6 0.8 1.0
t [ms]
VOUT = 3.5 V, VIN = 4.5 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 22.0 nF
5
100
4
VON/OFF
3
VOUT ⁸⁰
60
2
40
1
0
−5 0
20
IRUSH
0
5 10 15 20 25
t [ms]
VOUT = 1.2 V, VIN = 2.2 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 1.0 nF
2.5
VON/OFF
2.0
1.5
1.0
0.5
VOUT
IRUSH
0
−0.2 0 0.2 0.4 0.6 0.8
t [ms]
200
160
120
80
40
0
1.0
VOUT = 3.5 V, VIN = 4.5 V, IOUT = 0 mA,
CL = 1.0 μF, CSS = 1.0 nF
5
4
VON/OFF
3
2
VOUT
1
IRUSH
0
−0.2 0 0.2 0.4 0.6 0.8
t [ms]
200
160
120
80
40
0
1.0
29