s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 4

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

4
BATTERY BACKUP SWITCHING IC
S-8425 Series
Pin Configurations
*1.
Figure 2 Pin Configurations
VBAT
VC H
VBAT
VSS
VCH
VSS
CS
CS
Mount capacitors between VSS (GND) and the VIN, VBAT, VOUT, VRO, and VCH pins (see the
Standard Circuit section).
1
2
3
4
1
2
3
4
8-Pin SON(B)
8-Pin TSSOP
Top View
Top View
8
7
6
5
8
7
6
5
VRO
VI N
VOUT
RESET
VRO
VIN
VOUT
RESET
Seiko Instruments Inc.
No.
Pin
1
2
3
4
5
6
7
8
Symbol
RESET
VOUT
VBAT
VRO
VCH
VIN
VSS
CS
*1
*1
*1
*1
*1
Ground
Output pin of voltage regulator 3
Backup power supply input pin
Output pin of CS voltage detector
Output pin of RESET voltage detector
Output pin of voltage regulator 2
Primary power supply input pin
Output pin of voltage regulator 1
Description
Rev.2.3
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