Rev.1.2
_00
BATTERY PROTECTION IC
FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204A Series
The S-8204A Series is a protection IC for 3-series or 4-
series cell rechargeable lithium-ion battery, and
includes a voltage detection circuit with high accuracy
and a delay circuit.
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.
Features
(1) High-accuracy voltage detection for each cell
•
Overcharge detection voltage n (n = 1 to 4)
•
Overcharge release voltage n (n = 1 to 4)
•
Overdischarge detection voltage n (n = 1 to 4)
•
Overdischarge release voltage n (n = 1 to 4)
(2) Discharge overcurrent detection in 3-step
•
Discharge overcurrent detection voltage 1
•
Discharge overcurrent detection voltage 2
•
Short circuit detection voltage
(3) Charge overcurrent detection
(4)
3.9 to 4.6 V (50 mV step)
3.8 to 4.6 V
*1
2.0 to 3.0 V (100 mV step)
2.0 to 3.4 V
*2
0.05 to 0.25 V (50 mV step)
0.5 V (fixed)
1.0 V (fixed)
Accuracy
±25
mV
Accuracy
±50
mV
Accuracy
±80
mV
Accuracy
±100
mV
Accuracy
±15
mV
Accuracy
±100
mV
Accuracy
±300
mV
(5)
(6)
(7)
(8)
(9)
(10)
(11)
•
Charge overcurrent detection voltage
−0.25
to
−0.05
V (50 mV step) Accuracy
±30
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 to 22 V
−40
to
+85°C
Wide range of operation temperature
Low current consumption
•
Operation mode
33
µA
max. (+25°C)
•
Power-down mode
0.1
µA
max. (+25°C)
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)
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-8204A Series
Block Diagram
COP
Control circuit
Rev.1.2
_00
Delay circuit
Delay circuit
Delay circuit
CTLC
R
VMD
VMP
R
VMS
Delay circuit
CTLD
Delay circuit
Delay circuit
Over-
charge 1
−
VDD
DOP
Over-
+
discharge
+
1
−
VINI
+
−
+
−
+
−
+
−
Over-
charge 2
VC1
−
+
Discharge
overcurrent 1
Discharge
overcurrent 2
Short circuit
Charge
overcurrent
Over-
discharge
+
2
−
Over-
charge 3
−
+
Over-
discharge 3
+
−
VC2
CDT
Over-
charge 4
−
VC3
CCT
+
Over-
discharge 4
+
−
CIT
VC4
SEL
VSS
Remark
Diodes in the figure are parasitic diodes.
Figure 1
2
Seiko Instruments Inc.
Rev.1.2
_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204A Series
Product Name Structure
1. Product Name
S-8204A
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 taping specifications.
*2.
Refer to “2.
Product Name List”.
2. Product Name List
Table 1
Charge
Discharge
Overcharge
Overcharge
Overdischarge
Overdischarge
Overcurrent
0 V Battery
Product Name/
Overcurrent
Detection Voltage Release Voltage Detection Voltage Release Voltage
Item
Detection Voltage 1 Detection Voltage Charge Function
V
CU
V
CL
V
DL
V
DU
V
CIOV
V
DIOV1
S-8204AAB-
TCT1G
S-8204AAC-
TCT1G
4.350
±
0.025 V
4.200
±
0.025 V
4.150
±
0.050 V
4.100
±
0.050 V
2.00
±
0.080 V
2.70
±
0.080 V
2.70
±
0.100 V
2.90
±
0.100 V
0.25
±
0.015 V
0.25
±
0.015 V
−0.10 ±
0.030 V
−0.25 ±
0.030 V
Available
Available
Remark
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-8204A 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.1.2
_00
Figure 2
Table 2
Pin No.
1
2
3
4
Symbol
COP
VMP
DOP
VINI
Description
FET gate connection pin for charge control
(Nch 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
•
Pin for charge overcurrent detection
Capacitor connection pin for delay for overdischarge detection
Capacitor connection pin for delay for overcharge current
Capacitor connection pin
for delay detection for discharge overcurrent 1, 2
for delay for charge overcurrent detection
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 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
Input pin for positive power supply,
Connection pin for battery 1’s positive voltage
Control pin for discharge FET
Control pin for charge FET
5
6
7
CDT
CCT
CIT
8
SEL
9
10
11
12
13
14
15
16
VSS
VC4
VC3
VC2
VC1
VDD
CTLD
CTLC
4
Seiko Instruments Inc.
Rev.1.2
_00
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204A Series
Absolute Maximum Ratings
Table 3
Item
Input voltage between VDD
and VSS
Input pin voltage
VMP pin input voltage
DOP pin output voltage
COP pin output voltage
Power dissipation
Symbol
V
DS
V
IN
V
VMP
V
DOP
V
COP
P
D
Applied Pin
VC1, VC2, VC3, VC4,
CTLC, CTLD, SEL,
CCT, CDT, CIT, VINI
VMP
DOP
COP
(Ta = 25°C unless otherwise specified)
Absolute Maximum Ratings
Unit
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
SS
−0.3
to V
SS
+24
400 (When not mounted on board)
1100
*1
−40
to
+85
−40
to
+125
V
V
V
V
V
mW
mW
°C
°C
Operating ambient temperature
T
opr
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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