s-8426a Seiko Instruments Inc., s-8426a Datasheet - Page 20

• Manufacturer Part Number: s-8426a
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

20
BATTERY BACKUP SWITCHING IC
S-8426A Series
(3) ∆V
(4) Temperature Dependency
∆V
For example, ∆V
(a) VOUT pin
(a) VOUT pin
IN
shows the difference between the low voltage fixed to 6 V and the high voltage.
IN
V
Dependency
IN
= 6↔10 V, I
0.30
0.25
0.20
0.15
0.10
0.05
0.00
I
OUT
0.30
0.25
0.20
0.15
0.10
0.05
0.00
−50
= 50 mA, C
IN
0
= 2 V means the difference between 6 V and 8 V.
OUT
Figure 33
Figure 35
1
= 50 mA, C
OUT
0
Ta (°C)
2
∆V
= 22 µF, Ta = 25 °C
IN
(V)
3
50
OUT
Seiko Instruments Inc.
= 22 µF
4
100
5
(b) VRO pin
(b) VRO pin
V
IN
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.30
0.25
0.20
0.15
0.10
0.05
0.00
= 6↔10 V, I
I
RO
−50
= 30 mA, C
0
1
Figure 36
Figure34
RO
0
= 30 mA, C
RO
Ta (°C)
∆V
2
= 22 µF, Ta = 25 °C
IN
(V)
3
50
RO
Overshoot
Undershoot
Overshoot
Undershoot
= 22 µF
Rev.1.0
4
100
5
_00