S-1155 Datasheet, PDF (21/28 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR

Rev.1.1_00
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1155 Series
„ Reference Data
(1) Characteristics of Input Transient Response (Ta = 25°C)
S-1155B10
I_OUT = 100 mA, tr = tf = 5.0 µs, C_OUT = 4.7 µF, C_IN = 4.7 µF
1.15
4
VIN
1.10
3
1.05
2
VOUT
1.00
1
0.95
0
−200 0 200 400 600 800 1000 1200
t [µs]
S-1155B30
I_OUT = 100 mA, tr = tf = 5.0 µs, C_OUT = 4.7 µF, C_IN = 4.7 µF
3.20
6
3.15
5
VIN
3.10
4
3.05 ^VOUT
3
3.00
2
2.95
1
2.90
0
−200 0 200 400 600 800 1000 1200
t [µs]
S-1155B50
I_OUT = 100 mA, tr = tf = 5.0 µs, C_OUT = 4.7 µF, C_IN = 4.7 µF
5.25
7
5.20 VIN
6
5.15
5
5.10
4
5.05 VOUT
3
5.00
2
4.95
1
4.90
0
−200 0 200 400 600 800 1000 1200
t [µs]
(2) Characteristics of Load Transient Response (Ta = 25°C)
S-1155B10
V_IN = 2.0 V, C_OUT = 4.7 µF, C_IN = 4.7 µF, I_OUT = 50 ↔ 100 mA
1.20
150
1.15
100
IOUT
1.10
50
1.05
0
VOUT
1.00
−50
0.95
−100
0.90
−150
−200 0 200 400 600 800 1000 1200
t [µs]
S-1155B30
V_IN = 4.0 V, C_OUT = 4.7 µF, C_IN = 4.7 µF, I_OUT = 50 ↔ 100 mA
3.20
150
3.15
100
IOUT
3.10
50
3.05
3.00
2.95
VOUT
0
−50
−100
2.90
−150
−200 0 200 400 600 800 1000 1200
t [µs]
S-1155B50
V_IN = 5.5 V, C_OUT = 4.7 µF, C_IN = 4.7 µF, I_OUT = 50 ↔ 100 mA
5.20
150
5.15
IOUT
100
5.10
50
5.05
0
VOUT
5.00
−50
4.95
−100
4.90
−150
−200 0 200 400 600 800 1000 1200
t [µs]
Seiko Instruments Inc.
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