s-l2985 Seiko Instruments Inc., s-l2985 Datasheet - Page 18

• Manufacturer Part Number: s-l2985
• Description: High Ripple-rejection Wlp Package Low Dropout Cmos Voltage Regulator
• Manufacturer: Seiko Instruments Inc.

18
HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2985 Series
(1) Input transient response characteristics
S-L2985B15 (Ta = 25°C)
I
S-L2985B50 (Ta = 25°C)
I
(2) Load transient response characteristics
S-L2985B15 (Ta = 25°C)
V
S-L2985B50 (Ta = 25°C)
V
OUT
OUT
IN
IN
Reference Data
= 2.5 V, C
= 6.0 V, C
= 30 mA, tr = tf = 5.0 μs, C
= 30 mA, tr = tf = 5.0 μs, C
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.62
1.60
1.58
1.56
1.54
1.52
1.50
1.48
1.46
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
5.20
5.15
5.10
5.05
5.00
4.95
4.90
-40 -20
-40 -20
-40 -20
-40 -20
OUT
OUT
V
V
V
V
V
V
I
I
OUT
OUT
OUT
OUT
IN
OUT
IN
OUT
= 0.47 μF, C
= 0.47 μF, C
0
0
0
0
20
20
20
20
40
40
40
40
IN
IN
OUT
OUT
t [μs]
t [μs]
t [μs]
t [μs]
= 1.0 μF, I
= 1.0 μF, I
60
60
60
60
= 0.47 μF, C
= 0.47 μF, C
80 100 120 140
80 100 120 140 160
80 100 120 140 160
80 100 120 140
OUT
OUT
= 50↔100 mA
= 50↔100 mA
IN
IN
= 0 μF
= 0 μF
160
160
150
100
50
0
–50
–100
–150
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
8
7
6
5
4
3
2
1
0
150
100
50
0
–50
–100
–150
Seiko Instruments Inc.
S-L2985B30 (Ta = 25°C)
I
S-L2985B30 (Ta = 25°C)
V
OUT
IN
= 4.0 V, C
= 30 mA, tr = tf = 5.0 μs, C
3.08
3.06
3.04
3.02
3.00
2.98
2.96
3.20
3.15
3.10
3.05
3.00
2.95
2.90
-40 -20
-40 -20
OUT
V
V
V
I
OUT
OUT
IN
OUT
= 0.47 μF, C
0
0
20
20
40
40
IN
OUT
t [μs]
t [μs]
= 1.0 μF, I
60
60
= 0.47 μF, C
80 100 120 140
80 100 120 140 160
OUT
= 50↔100 mA
IN
= 0 μF
Rev.2.1
160
150
100
50
0
–50
–100
–150
6
5
4
3
2
1
0
_00