s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 33

• Manufacturer Part Number: s-8425
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

2. Voltage Detector
Rev.2.3
2.1 CS Voltage Detector ( − V
(1) Detection voltage ( − V
(3) Output current (I
2.2 RESET Voltage Detector ( − V
(1) Detection voltage ( − V
(3) Output current (I
− 10
− 20
− 10
− 20
10
20
10
10
20
10
8
6
4
2
0
0
characteristics
characteristics
8
6
4
2
0
characteristics
characteristics
0
_00
− 40
− 40 − 20
− 40 − 20
− 40
Based on CS ( − V
V
Based on RESET ( − V
IN
when Ta is 25 ° C
− 20
− 20
= V
V
IN
BAT
= V
0
0
0
0
= 2.0 V, V
BAT
DET1
SINK
SINK
Ta ( ° C)
Ta ( ° C)
Ta ( ° C )
Ta (°C )
) voltage when Ta is 25 ° C)
20
= 2.0 V, V
20
20
20
) temperature
) temperature
DET1
DET2
DET2
DS
40
40
40
40
= 0.5 V
) voltage
DET1
) temperature
) temperature
DS
60
60
60
= 0.5 V
60
= 3.3 V)
DET2
80
80
80
80
= 2.4 V)
Seiko Instruments Inc.
100
100
100
100
(2) Output current (I
(2) Output current (I
(4) RESET release delay time
30
25
20
15
10
5
0
6
5
4
3
2
1
0
30
25
20
15
10
0.0
5
0
BATTERY BACKUP SWITCHING IC
0.0
− 40 − 20
Ta
Ta = 25 ° C
=
25 ° C
1.0
1.0
Typ
0
SINK
SINK
V
20
Ta ( ° C)
V
DS
2.0
) characteristics
) characteristics
2.0
DS
(V)
Worst
(V)
40
S-8425 Series
V
60
V
3.0
V
3.0
IN
IN
IN
V
=
IN
= 1.7 V
= 3 V
1.7 V
=
80
3 V
100
4.0
4.0
33