s-817b23ay Seiko Instruments Inc., s-817b23ay Datasheet - Page 16
s-817b23ay
Manufacturer Part Number
s-817b23ay
Description
Super-small Package Cmos Voltage Regulator
Manufacturer
Seiko Instruments Inc.
Datasheet
1.S-817B23AY.pdf
(50 pages)
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16
SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
2. Constant Current Circuit
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
2. 1 Constant Current Circuit
2. 2 Constant Current Boosting Circuit
1.20
1.10
1.00
0.90
0.80
0.70
0.60
Tr1 : 2SA1213Y, R
R
2
1.4
: 2 Ω
1 mA
1.5
10 mA
50 mA
1.6
100 mA
1.7
V
GND
IN
V
GND
1.8
IN
1
V
: 1 kΩ, C
IN
1.9
VIN
(V)
C
C
IN
IN
2
R
200 mA
1
2.1
L
400 mA
: 10 µF,
Tr1
Seiko Instruments Inc.
600 mA
2.2
800 mA
S-817
VSS
Series
2.3
S-817
Series
VSS
2.4
Figure 15
Figure 16
VOUT
1. 2 S-817A50ANB/S-817B50AMC
VOUT
5.20
5.10
5.00
4.90
4.80
4.70
4.60
Tr1 : 2SA1213Y, R
R
2
5.2
: 10 Ω
V
V
O
R
O
R
5 mA
L
L
10 mA
5.3
I
O
50 mA
V0
I
V0
O
100 mA
5.4
Device
5.5
Device
1
V
: 200 Ω, C
IN
(V)
5.6
200 mA
400 mA
5.7
L
: 10 µF,
600 mA
Rev.3.0
800 mA
5.8
5.9
_00
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