S-8425AAAFT-TB-X Datasheet, PDF (5/45 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

Rev.3.1_01
BATTERY BACKUP SWITCHING IC
S-8425 Series
 Pin Configurations
VSS
VCH
VBAT
CS
8-Pin TSSOP
Top View
1
8
2
7
3
6
4
5
VRO
VIN
VOUT
RESET
8-Pin SON(B)
Top View
VSS 1
VCH 2
VBAT ₃
CS 4
8 VRO
7 VIN
6 ^VOUT
5 RESET
Pin Symbol
No.
Description
1
VSS Ground
2
VCH^*1 Output pin of voltage regulator 3
3
VBAT^*1 Backup power supply input pin
4
CS Output pin of CS voltage detector
5
RESET Output pin of RESET voltage detector
6
VOUT^*1 Output pin of voltage regulator 2
7
VIN^*1 Primary power supply input pin
8
VRO^*1 Output pin of voltage regulator 1
Figure 2 Pin Configurations
*1. Mount capacitors between VSS (GND) and the VIN, VBAT, VOUT, VRO, and VCH pins (see the
Standard Circuit section).
5