Rev.1.4
_00
BATTERY PROTECTION IC
FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
The S-8204B Series includes a voltage detection circuit with
high accuracy and a delay circuit, 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
this IC either for 3-series or 4-series cell pack.
By cascade connection using this IC, it is also possible to
protect 5-series or more cells
*1
rechargeable lithium-ion
battery pack.
*1.
Refer to the usage guideline for connection examples of
protection circuit with 5-series cell.
Features
(1)
High-accuracy voltage detection 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
•
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
(Short circuit detection voltage delay time is internally fixed.)
Switchable between 3-series and 4-series cell by using the SEL pin
Independent charging and discharge control by the control pins
Withstand voltage element
Absolute maximum rating : 24 V
Wide range of operation voltage
2 V to 22 V
Wide range of operation temperature
−40°C
to
+85°C
Low current consumption
•
Operation mode
33
µ
A max. (+25°C)
•
Power-down mode
0.1
µ
A max. (+25°C)
(10) Lead-free product
*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)
(4)
(5)
(6)
(7)
(8)
(9)
(2)
(3)
Applications
•
Rechargeable lithium-ion battery packs
Package
Package Name
16-Pin TSSOP
Package
FT016-A
Drawing Code
Tape
FT016-A
Reel
FT016-A
Seiko Instruments Inc.
1
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Block Diagram
Rev.1.4
_00
Control circuit
COP
Delay circuit
Delay circuit
Delay circuit
CTLD
R
VMD
VMP
R
VMS
Delay circuit
Delay circuit
Overcharge
1
−
+
Over-
discharge 1
+
−
Overcharge
2
−
+
Over-
discharge 2
+
−
Overcharge
3
−
+
Over-
discharge 3
+
−
Overcharge
4
−
VDD
CTLC
VC1
DOP
VC2
VINI
+
−
+
−
+
−
Discharge
overcurrent 1
Discharge
overcurrent 2
Short circuit
VC3
VC4
CDT
+
Over-
discharge 4
+
−
CCT
CIT
VSS
SEL
Remark
Diodes in the figure are parasitic diodes.
Figure 1
2
Seiko Instruments Inc.
Rev.1.4
_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
G
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 specifications.
*2.
Refer to “2.
Product Name List”.
2. Product Name List
Table 1
Product Name/
Item
S-8204BAB-TCT1G
S-8204BAC-TCT1G
S-8204BAD-TCT1G
S-8204BAE-TCT1G
S-8204BAF-TCT1G
S-8204BAG-TCT1G
S-8204BAH-TCT1G
S-8204BAI-TCT1G
S-8204BAJ-TCT1G
S-8204BAK-TCT1G
Remark
Overcharge
Overcharge Release Overdischarge
Detection Voltage
Detection Voltage
Voltage
V
CU
V
DL
V
CL
4.350
±
0.025 V 4.150
±
0.050 V 2.00
±
0.080 V
4.225
±
0.025 V 4.075
±
0.050 V 2.30
±
0.080 V
3.800
±
0.025 V
4.350
±
0.025 V
4.350
±
0.025 V
4.350
±
0.025 V
4.200
±
0.025 V
3.900
±
0.025 V
4.300
±
0.025 V
3.650
±
0.025 V
3.600
±
0.050 V
4.150
±
0.050 V
4.150
±
0.050 V
4.150
±
0.050 V
4.000
±
0.050 V
3.800
±
0.050 V
4.100
±
0.050 V
3.500
±
0.050 V
2.00
±
0.080 V
2.50
±
0.080 V
2.30
±
0.080 V
2.80
±
0.080 V
2.60
±
0.080 V
2.00
±
0.080 V
2.50
±
0.080 V
2.40
±
0.080 V
Discharge
Overdischarge
0 V Battery
Overcurrent
Release Voltage
Detection Voltage 1 Charge Function
V
DU
V
DIOV1
2.70
±
0.100 V
3.00
±
0.100 V
2.30
±
0.100 V
3.00
±
0.100 V
3.00
±
0.100 V
3.30
±
0.100 V
3.00
±
0.100 V
2.00
±
0.100 V
2.90
±
0.100 V
3.00
±
0.100 V
0.25
±
0.015 V
0.10
±
0.015 V
0.30
±
0.015 V
0.25
±
0.015 V
0.10
±
0.015 V
0.10
±
0.015 V
0.10
±
0.015 V
0.15
±
0.015 V
0.25
±
0.015 V
0.10
±
0.015 V
Available
Available
Available
Available
Available
Available
Available
Unavailable
Available
Available
Please contact our sales office for products with detection voltage values other than those specified above.
Seiko Instruments Inc.
3
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Pin Configuration
16-Pin TSSOP
Top view
COP
VMP
DOP
VINI
CDT
CCT
CIT
SEL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CTLC
CTLD
VDD
VC1
VC2
VC3
VC4
VSS
Rev.1.4
_00
Figure 2
Table 2
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
FET gate connection pin for charge control
(Pch open drain output)
Pin for voltage detection between VDD and VMP
FET gate connection pin for discharge control FET
(CMOS output)
Pin for voltage detection between VSS and VINI
Pin for discharge overcurrent detection 1, 2/Pin for short circuit detection voltage
Capacitor connection pin for delay for overdischarge detection voltage
Capacitor connection pin for delay for overcharge detection voltage
Capacitor connection pin for delay for discharge overcurrent detection 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 battery 4’s negative voltage
Connection pin for battery 3’s negative voltage,
Connection pin for battery 4’s positive voltage
Connection pin for battery 2’s negative voltage,
Connection pin for battery 3’s positive voltage
Connection pin for battery 1’s negative voltage,
Connection pin for battery 2’s positive voltage
Connection pin for battery 1’s positive voltage
Input pin for positive power supply,
Connection pin for battery 1’s positive voltage
Control pin for discharge FET
Control pin for charge FET
4
Seiko Instruments Inc.
Rev.1.4
_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series
Absolute Maximum Ratings
Table 3
(Ta = 25°C unless otherwise specified)
Item
Input voltage between VDD and
VSS
Input pin voltage
VMP pin input voltage
DOP pin output voltage
COP pin output voltage
Power dissipation
Operating ambient temperature
Symbol
V
DS
V
IN
V
VMP
V
DOP
V
COP
P
D
T
opr
Applied Pin
VC1, VC2, VC3, VC4,
CTLC, CTLD, SEL,
CCT, CDT, CIT, VINI
VMP
DOP
COP
Absolute Maximum Ratings
V
SS
−0.3
to V
SS
+24
V
SS
−0.3
to V
DD
+0.3
V
SS
−0.3
to V
SS
+24
V
SS
−0.3
to V
DD
+0.3
V
DD
−24
to V
DD
+0.3
1100
*1
Unit
V
V
V
V
V
mW
°C
°C
−40
to
+85
−40
to
+125
Storage temperature
T
stg
*1.
When mounted on board
[Mounted board]
(1) Board size :
114.3 mm
×
76.2 mm
×
t1.6 mm
(2) Board name :
JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
1200
Power Dissipation (P
D
) [mW]
1000
800
600
400
200
0
0
50
100
150
Ambient Temperature (Ta) [°C]
Figure 3 Power Dissipation of Package (When Mounted on Board)
Seiko Instruments Inc.
5
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