S-1200 Datasheet, PDF (21/31 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT LOW INPUT-AND-OUTPUT CAPACITANCE CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT LOW INPUT-AND-OUTPUT CAPACITANCE CMOS VOLTAGE REGULATOR
Rev.3.2_00
S-1200 Series
(3) Shutdown pin transient response characteristics
S-1200B15 (Ta = 25°C)
VIN = 2.5 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 30 mA
5
3
4
2
V_ON/OFF
3
1
2
0
1 _VOUT
–1
0
–2
–1
–3
-0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
t [ms]
S-1200B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 30 mA
20
9
16
6
12
V_ON/OFF
3
8
0
4
–3
VOUT
0
–6
–4
-0.4 -0.2 0
–9
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
t [ms]
(4) Input transient response characteristics Capacity Value characteristics
S-1200B15 (Ta = 25°C)
V_IN = 2.5 → 4.5 V, tr = 5 µs, I_OUT = 50 mA
1.8
6
1.7
4
V_IN
1.6
2
COUT = 0.1 µF
1.5
0
V_OUT
1.4
C_OUT = 1.0 µF
–2
1.3
–4
1.2
–6
-40 -20 0 20 40 60 80 100 120 140 160
t [µs]
(5) Load transient response characteristics  Capacity Value characteristics
S-1200B15 (Ta = 25°C)
V_IN = 2.5 V, I_OUT = 1 → 50 mA
2.0
100
1.8
50
I_OUT
1.6
COUT = 1.0 µF
0
1.4 VOUT
1.2
1.0
C_OUT = 0.1 µF
0.8
-40 -20 0 20 40 60 80 100 120 140 160
t [µs]
S-1200B30 (Ta = 25°C)
VIN = 4.0 V, COUT = 0.1 µF, CIN = 0.1 µF, IOUT = 30 mA
10
6
8
4
6
V_ON/OFF
2
4
0
2
–2
V_OUT
0
–4
–2
–6
-0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
V_ON/OFF [V]
V_IN = 4.5→ 2.5 V, tr = 5 µs, I_OUT = 50 mA
2.0
6
1.8
4
V_IN
1.6
2
1.4 VOUT
0
1.2
C_OUT = 1.0 µF
–2
1.0
C_OUT = 0.1 µF
–4
0.8
–6
-40 -20 0 20 40 60 80 100 120 140 160
t [µs]
V_IN = 2.5 V, I_OUT = 50 → 1 mA
2.2
100
2.0
50
I_OUT
1.8
0
1.6 VOUT
C_OUT = 1.0 µF
1.4
COUT = 0.1 µF
1.2
1.0
-40 -20 0 20 40 60 80 100 120 140 160
t [µs]
Seiko Instruments Inc.
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