SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
Rev.4.2_00
The following graphs show the examples of input-output voltage characteristics (Ta=25°C, typ.) in the
output current boosting circuit as seen in Figure 15:
1. 1 S-817A11ANB/S-817B11AMC
1. 2 S-817A50ANB/S-817B50AMC
Tr1 : 2SA1213Y, R1 : 1 kΩ, CL : 10 µF,
R2 : 2 Ω
Tr1 : 2SA1213Y, R1 : 200 Ω, CL : 10 µF,
R2 : 10 Ω
1.20
5.20
100 mA
1.10
5.10
50 mA
1.00
5.00
100 mA
10 mA
50 mA
10 mA
0.90
0.80
0.70
0.60
1 mA
800 mA
600 mA
400 mA
200 mA
4.90
800 mA
4.80
4.70
4.60
5 mA
600 mA
400 mA
200 mA
1.4 1.5 1.6 1.7 1.8 1.9
2
2.1 2.2 2.3 2.4
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
VIN (V)
VIN (V)
2. Constant Current Circuit
2. 1 Constant Current Circuit
VIN
VIN
S-817
Series
VSS
VOUT
RL
V0
IO
CIN
VO
Device
GND
Figure 16
2. 2 Constant Current Boosting Circuit
Tr1
VIN
S-817
Series
VSS
VOUT
R1
RL
V0
IO
CIN
Device
VO
GND
Figure 17
16
Seiko Instruments Inc.
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