S-8424AAAFT-TB-X Datasheet, PDF (5/46 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

Rev.3.0_01
BATTERY BACKUP SWITCHING IC
S-8424A Series
 Pin Configurations
8-Pin TSSOP
Top View
VSS ₁
8
PREEND 2
7
VBAT ₃
6
CS 4
5
Figure 2
VRO
VIN
VOUT
RESET
Table 1
Pin No.
1
2
3
4
5
6
7
8
Symbol
VSS
PREEND
VBAT^*1
CS
RESET
VOUT^*2
VIN^*3
VRO^*4
Ground
Description
Output pin of PREEND voltage detector
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
*1 to *4. Mount capacitors between VSS (GND pin) and the VIN, VBAT,
VOUT, and VRO pins. (Refer to the “Standard Circuit”)
8-Pin SON(B)
Top View
VSS ¹
PREEND ²
VBAT 3
CS ⁴
8 VRO
7 VIN
6 ^{VOU T}
5 RESET
Figure 3
Table 2
Pin No.
1
2
3
4
5
6
7
8
Symbol
VSS
PREEND
VBAT^*1
CS
RESET
VOUT^*2
VIN^*3
VRO^*4
Ground
Description
Output pin of PREEND voltage detector
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
*1 to *4. Mount capacitors between VSS (GND pin) and the VIN, VBAT,
VOUT, and VRO pins. (Refer to the “Standard Circuit”)
5