s-8424a Seiko Instruments Inc., s-8424a Datasheet - Page 34

• Manufacturer Part Number: s-8424a
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

2. Voltage Detector
34
BATTERY BACKUP SWITCHING IC
S-8424A Series
(1) Detection voltage ( − V
(3) Output current (I
(1) Detection voltage ( − V
(3) Output current (I
2.1 CS Voltage Detector ( − V
2.2 RESET Voltage Detector ( − V
characteristics
characteristics
− 10
− 20
− 10
− 20
10
20
10
20
10
10
0
8
6
4
2
0
8
6
4
2
0
0
− 40
− 40
− 40
− 40
Based on CS ( − V
Based on RESET ( − V
when Ta is 25 ° C
− 20
− 20
− 20
− 20
V
V
IN
IN
SINK
SINK
= V
= V
0
0
0
0
) temperature characteristics
) temperature characteristics
DET1
BAT
BAT
Ta ( ° C )
DET1
DET2
Ta (°C)
Ta ( ° C )
Ta ( ° C)
) voltage when Ta is 25°C
20
= 2.0 V, V
20
20
= 2.0 V, V
20
DET1
) temperature
) temperature
DET2
40
40
40
40
= 3.3 V)
) voltage
DET2
DS
DS
60
60
60
60
= 0.5 V
= 0.5 V
= 2.2 V)
Seiko Instruments Inc.
80
80
80
80
100
100
100
100
(2) Output current (I
(2) Output current (I
30
25
20
15
10
5
0
30
25
20
15
10
0.0
5
0
0.0
Ta = 25 ° C
Ta = 25 ° C
1.0
1.0
SINK
SINK
) characteristics
) characteristics
V
V
DS
2.0
DS
2.0
(V)
(V)
V
3.0
V
V
3.0
IN
IN
V
IN
= 1.7 V
IN
= 1.7 V
= 3 V
= 3 V
Rev.2.2
4.0
4.0
_00