S-8254AANFT-TB-G Datasheet, PDF (5/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK

Rev.5.0_01
BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
S-8254A Series
„ Pin Configuration
16-Pin TSSOP
Top view
COP
1
VMP
2
DOP
3
VINI
4
CDT
5
CCT
6
VSS
7
NC
8
16
VDD
15
VC1
14
VC2
13
VC3
12
VC4
11
CTL
10
SEL
9
NC
Figure 2
Table 2
Pin No. Symbol
Description
1
COP FET gate connection pin for charge control (Nch open drain output)
2
VMP
Pin for voltage detection between VC1 and VMP (Pin for overcurrent 3
detection)
3
DOP FET gate connection pin for discharge control FET (CMOS output)
4
VINI
Pin for voltage detection between VSS and VINI (Pin for overcurrent detection
1,2)
5
CDT
Capacitor connection pin for delay for overdischarge detection, delay for
overcurrent detection 1
6
CCT Capacitor connection pin for delay for overcharge current
7
VSS
Input pin for negative power supply,
Connection pin for battery 4’s negative voltage
8
NC ^*1
No connection
9
NC ^*1
No connection
10
SEL
Pin for switching 3-series or 4-series cell
V_SS level: 3-series cell, V_DD level : 4-series cell
11
CTL
Control of charge FET and discharge FET
12
VC4
Connection pin for battery 3’s negative voltage,
Connection pin for battery 4’s positive voltage
13
VC3
Connection pin for battery 2’s negative voltage,
Connection pin for battery 3’s positive voltage
14
VC2
Connection pin for battery 1’s negative voltage,
Connection pin for battery 2’s positive voltage
15
VC1 Connection pin for battery 1’s positive voltage
16
VDD
Input pin for positive power supply,
Connection pin for battery 1’s positive voltage
*1. The NC pin is electrically open. The NC pin can be connected to VDD or VSS.
Seiko Instruments Inc.
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