S-13A1 Datasheet, PDF (41/74 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.2.1_00
S-13A1 Series
2. Transient response characteristics of load (Ta = +25°C)
2. 1 V_OUT = 1.0 V
V_IN = 2.0 V, C_IN = C_L = 2.2 μF, I_OUT = 50 mA ↔ 100 mA
V_IN = 2.0 V, C_IN = C_L = 2.2 μF, I_OUT = 100 mA ↔ 500 mA
1.20
1.15
1.10 ^IOUT
1.05
VOUT
1.00
0.95
0.90
−200 0
150
100
50
0
−50
−100
−150
200 400 600 800 1000 1200
t [μs]
1.4
1.3
1.2 IOUT
1.1
1.0
VOUT
0.9
0.8
−200 0
600
400
200
0
−200
−400
−600
200 400 600 800 1000 1200
t [μs]
2. 2 V_OUT = 2.5 V
V_IN = 3.5 V, C_IN = C_L = 2.2 μF, I_OUT = 50 mA ↔ 100 mA
V_IN = 3.5 V, C_IN = C_L = 2.2 μF, I_OUT = 100 mA ↔ 500 mA
2.58
2.56
2.54 ^IOUT
2.52
2.50 _VOUT
2.48
2.46
−200 0
150
100
50
0
−50
−100
−150
200 400 600 800 1000 1200
t [μs]
2.9
2.8
2.7 _IOUT
2.6
2.5 _VOUT
2.4
2.3
−200 0
600
400
200
0
−200
−400
−600
200 400 600 800 1000 1200
t [μs]
2. 3 V_OUT = 3.5 V
V_IN = 4.5 V, C_IN = C_L = 2.2 μF, I_OUT = 50 mA ↔ 100 mA
3.57
150
3.55
100
3.53 ^IOUT
50
3.51
3.49 VOUT
3.47
3.45
−200 0
0
−50
−100
−150
200 400 600 800 1000 1200
t [μs]
V_IN = 4.5 V, C_IN = C_L = 2.2 μF, I_OUT = 100 mA ↔ 500 mA
3.9
600
3.8
400
3.7 _IOUT
200
3.6
0
3.5
VOUT
3.4
−200
−400
3.3
−600
−200 0 200 400 600 800 1000 1200
t [μs]
+
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