S-8204B Series
www.sii-ic.com
© Seiko Instruments Inc., 2008-2013
BATTERY PROTECTION IC
FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6
_00
The S-8204B Series includes high-accuracy voltage detection circuits and delay circuits, in single use, makes it possible for
users to monitor the status of 3-series or 4-series cell lithium-ion rechargeable battery. By switching the voltage level which
is applied to the SEL pin, users are able to use the S-8204B Series either for 3-series or 4-series cell pack.
By cascade connection using the S-8204B Series, it is also possible to protect 6-series or more cells
*1
lithium-ion
rechargeable battery pack.
*1.
Refer to the application note for connection examples of protection circuit for 6-series or more cells.
In case of protecting 5-series cell lithium-ion rechargeable battery pack, contact our sales office.
Features
•
High-accuracy voltage detection function for each cell
Overcharge detection voltage n (n = 1 to 4)
3.65 V to 4.6 V (50 mV step)
Accuracy
±25
mV
*1
Overcharge release voltage n (n = 1 to 4)
3.5 V to 4.6 V
Accuracy
±50
mV
Overdischarge detection voltage n (n = 1 to 4)
2.0 V to 3.0 V (100 mV step)
Accuracy
±80
mV
*2
Accuracy
±100
mV
Overdischarge release voltage n (n = 1 to 4)
2.0 V to 3.4 V
•
Discharge overcurrent detection in 3-step
Discharge overcurrent detection voltage 1
0.05 V to 0.30 V (50 mV step)
Accuracy
±15
mV
Discharge overcurrent detection voltage 2
0.5 V (fixed)
Accuracy
±100
mV
Load short-circuit detection voltage
1.0 V (fixed)
Accuracy
±300
mV
•
Settable by external capacitor; overcharge detection delay time, overdischarge detection delay time, discharge
overcurrent detection delay time 1, discharge overcurrent detection delay time 2
(Load short-circuit detection delay time is internally fixed.)
•
Switchable between 3-series and 4-series cell by using the SEL pin
•
Independent charge and discharge control by the control pins
•
High-withstand voltage element
Absolute maximum rating: 24 V
•
Wide operation voltage range
2 V to 22 V
•
Wide operation temperature range
Ta =
−40°C
to
+85°C
•
Low current consumption
During operation
33
μ
A max. (Ta =
+25°C)
During power-down
0.1
μ
A max. (Ta =
+25°C)
*3
•
Lead-free, Sn 100%, halogen-free
*1.
Overcharge hysteresis voltage n (n = 1 to 4) is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.
(Overcharge hysteresis voltage = Overcharge detection voltage
−
Overcharge release voltage)
*2.
Overdischarge hysteresis voltage n (n = 1 to 4) is selectable in 0 V, or in 0.2 V to 0.7 V in 100 mV step.
(Overdischarge hysteresis voltage = Overdischarge release voltage
−
Overdischarge detection voltage)
*3.
Refer to "
Product Name Structure"
for details.
Application
•
Rechargeable lithium-ion battery pack
Package
•
16-Pin TSSOP
Seiko Instruments Inc.
1
Rev.3.6
_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Product Name Structure
1. Product name
S-8204B
xx
-
xxxx
x
Environmental code
U: Lead-free (Sn 100%), halogen-free
S: Lead-free, halogen-free
Package name (abbreviation) and packing specifications
*1
TCT1: 16-Pin TSSOP, Tape
Serial code
*2
Sequentially set from AA to ZZ
*1.
Refer to the tape drawing.
*2.
Refer to "3.
Product name list".
2. Package
Table 1 Package Drawing Codes
Package Name
16-Pin TSSOP
Environmental code = S
Environmental code = U
Dimension
FT016-A-P-SD
FT016-A-P-SD
Tape
FT016-A-C-SD
FT016-A-C-SD
Reel
FT016-A-R-SD
FT016-A-R-S1
Seiko Instruments Inc.
3
Rev.3.6
_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Pin Configuration
1.
16-Pin TSSOP
Top view
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Figure 2
Table 3
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
COP
VMP
DOP
VINI
CDT
CCT
CIT
SEL
VSS
VC4
VC3
VC2
VC1
VDD
CTLD
CTLC
Description
Connection pin of charge control FET gate (Pch open-drain output)
Voltage detection pin between VDD pin and VMP pin
Connection pin of discharge control FET gate (CMOS output)
Voltage detection pin between VSS pin and VINI pin,
discharge overcurrent 1 / 2 detection pin, load short-circuit detection pin
Capacitor connection pin for delay for overdischarge detection
Capacitor connection pin for delay for overcharge detection
Capacitor connection pin for delay for discharge overcurrent 1 / 2
Pin for switching 3-series or 4-series cell
•
V
SS
level: 3-series cell
•
V
DD
level: 4-series cell
Input pin for negative power supply,
connection pin for negative voltage of battery 4
Connection pin for negative voltage of battery 3,
connection pin for positive voltage of battery 4
Connection pin for negative voltage of battery 2,
connection pin for positive voltage of battery 3
Connection pin for negative voltage of battery 1,
connection pin for positive voltage of battery 2
Connection pin for positive voltage of battery 1
Input pin for positive power supply,
connection pin for positive voltage of battery 1
Discharge FET control pin
Charge FET control pin
Seiko Instruments Inc.
5
PCB设计
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