s-8426a Seiko Instruments Inc., s-8426a Datasheet - Page 8

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

8
BATTERY BACKUP SWITCHING IC
S-8426A Series
Test Circuits
V
V
F.G.
IN
V
IN
IN
Leave open and measure the value after
applying 6 V to VIN.
VIN
VSS
Figure 11 Test Circuit 7
V
Figure 5 Test Circuit 1
Figure 7 Test Circuit 3
Figure 9 Test Circuit 5
VIN
VSS
BAT
VBAT VOUT
VSS
VIN
VBAT
VIN
VBAT
PREEND
VOUT
V
VRO or
RESET
BAT
VSS
VOUT
CS
CS
VOUT
100 kΩ
↓
A
A
A
I
OUT
Oscillo
scope
Oscillo
scope
10 µF
↓
Seiko Instruments Inc.
V
DS
V
V
V
V
IN
V
Measure the value after applying 6 V to VIN.
To measure I
leave VIN open and measure I
V
I
SS
IN
V
To measure V
V
IN
A
IN
VSS
VIN
VBAT VOUT
Figure 10 Test Circuit 6
Figure 12 Test Circuit 8
Figure 6 Test Circuit 2
Figure 8 Test Circuit 4
A
V
BAT2
PREEND
BAT
I
V
BAT
RESET
BAT
DET3
A
, apply 6 V to VIN and then
V
VBAT
VIN
BAT
CS
, apply 6 V to VIN.
VIN
VBAT
VSS
V
VIN
VBAT
V
VSS
VOUT
100 kΩ
BAT
VSS
.
V
100 kΩ
Rev.1.0
V
V
100 kΩ
_00