S-817 Datasheet, PDF (16/50 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR

SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
Rev.3.0_00
The following graphs show the examples of input-output voltage characteristics (Ta=25°C, typ.) in the
output current boosting circuit:
1. 1 S-817A11ANB/S-817B11AMC
1. 2 S-817A50ANB/S-817B50AMC
Tr1 : 2SA1213Y, R₁ : 1 kΩ, C_L : 10 µF,
R₂ : 2 Ω
1.20
1.10
100 mA
50 mA
1.00
10 mA
0.90 1 mA
800 mA
0.80
600 mA
0.70
0.60
1.4 1.5 1.6 1.7 1.8 1.9
400 mA
200 mA
2 2.1 2.2 2.3 2.4
VIN (V)
Tr1 : 2SA1213Y, R₁ : 200 Ω, C_L : 10 µF,
R₂ : 10 Ω
5.20
5.10
5.00
100 mA
50 mA
4.90
10 mA
4.80
5 mA
800 mA
600 mA
4.70
400 mA
200 mA
4.60
5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9
V_IN (V)
2. Constant Current Circuit
2. 1 Constant Current Circuit
V_IN VIN
C_IN
GND
S-817
Series
VSS
VOUT
R_{L V0}
I_O
V_O
Device
Figure 15
2. 2 Constant Current Boosting Circuit
Tr1
V_IN
R₁
S-817
Series
VSS
C_IN
GND
VOUT
R_{L V0}
I_O
V_O
Device
Figure 16
16
Seiko Instruments Inc.