s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 18

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

18
BATTERY BACKUP SWITCHING IC
S-8425 Series
1.3 ΔV
Δ V
For example, Δ V
(1) VOUT pin
I
(3) VCH pin
I
OUT
CH
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
= 10 mA, C
shows the difference between the low voltage fixed to 6 V and the high voltage.
= 50 mA, C
IN
Dependency
0
0
CH
1
1
OUT
IN
= 10 μ F, Ta = 25 ° C
= 2 V means the difference between 6 V and 8 V.
ΔV
ΔV
= 22 μ F, Ta = 25 ° C
2
2
IN
IN
(V)
(V)
3
3
4
4
5
5
Seiko Instruments Inc.
I
(2) VRO pin
RO
0.30
0.25
0.20
0.15
0.10
0.05
0.00
= 30 mA, C
0
1
RO
= 22 μ F, Ta = 25 ° C
2
ΔV
IN
(V)
3
Overshoot
Undershoot
4
Rev.2.3
5
_00