S-1172 Seiko Instruments, S-1172 Datasheet - Page 24

• Manufacturer Part Number: S-1172
• Description: HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
• Manufacturer: Seiko Instruments

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(4) Characteristics of Rush Current (Ta = 25 ° C)
(5) Example of Equivalent Series Resistance vs. Output Current Characteristics (Ta = 25°C)
24
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1172 Series
S-1172B10
V
S-1172B30
V
S-1172B50
V
IN
IN
IN
= 2.0 V, C
= 4.0 V, C
= 5.5 V, C
−2
−4
−6
−2
−4
−6
−2
−4
−6
6
4
2
0
6
4
2
0
6
4
2
0
−50
−50
−50
100
0.1
0
I
I
I
OUT
OUT
OUT
V
V
OUT
OUT
OUT
ON/OFF
ON/OFF
0.1
0
0
0
= 4.7 µF, C
= 4.7 µF, C
= 4.7 µF, C
V
ON/OFF
V
OUT
50
50
50
t [µs]
t [µs]
t [µs]
V
V
I
OUT
OUT
Stable
OUT
IN
IN
IN
= 4.7 µF, I
= 4.7 µF, I
= 4.7 µF, I
100
100
100
[mA]
C
IN
150
150
150
= C
OUT
OUT
OUT
1000
L
= 100 mA
= 100 mA
= 100 mA
= 4.7 µF
200
200
200
Seiko Instruments Inc.
0.6
0.6
0.6
1.0
0.8
0.4
0.2
0
1.0
0.8
0.4
0.2
0
1.0
0.8
0.4
0.2
0
1.2
1.2
1.2
V
V
V
IN
IN
IN
= 2.0 V, C
= 4.0 V, C
= 5.5 V, C
−2
−2
−2
−4
−6
−4
−6
−4
−6
−500
−500
−500
6
4
2
0
6
4
2
0
6
4
2
0
V
ON/OFF
ON/OFF
I
I
I
OUT
OUT
OUT
C
V
V
OUT
OUT
OUT
IN
ON/OFF
ON/OFF
0
0
0
= 4.7 µF, C
= 4.7 µF, C
= 4.7 µF, C
S-1172 Series
V
V
V
500
500
500
OUT
OUT
OUT
t [µs]
t [µs]
t [µs]
VIN
VSS
IN
IN
IN
1000
1000
1000
= 4.7 µF, I
= 4.7 µF, I
= 4.7 µF, I
VOUT
1500
1500
1500
OUT
OUT
OUT
C
R
L
ESR
Rev.1.1
= 1000 mA
= 1000 mA
= 1000 mA
2000
2000
2000
1.5
1.0
0.5
0
1.5
1.0
0.5
0
1.5
1.0
0.5
0
3.0
2.5
2.0
3.0
2.5
2.0
3.0
2.5
2.0
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