S-8204B Series
www.sii-ic.com
BATTERY PROTECTION IC
FOR 3-SERIES OR 4-SERIES CELL PACK
© Seiko Instruments Inc., 2008-2013 Rev.3.6_00
Seiko Instruments Inc. 1
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
Overcharge release voltage n (n = 1 to 4) 3.5 V to 4.6 V*1 Accuracy ±50 mV
Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV step) Accuracy ±80 mV
Overdischarge release voltage n (n = 1 to 4) 2.0 V to 3.4 V*2 Accuracy ±100 mV
• 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 μA max. (Ta = +25°C)
During power-down 0.1 μA max. (Ta = +25°C)
• Lead-free, Sn 100%, halogen-free*3
*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
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
2
Block Diagram
COP
VMP
DOP
+
−
VINI
Discharge
overcurrent 1
CDT
CCT
CIT VSS
Control circuit
R
VMD
R
VMS
VDD
VC1
VC2
VC3
VC4
CTLC
CTLD
Overcharge
1
SEL
Delay circuit
+
−
+
−
−
+
+
−
+
−
+
−
+
−
−
+
−
+
−
+
Delay circuit
Delay circuit
Delay circuit
Over-
discharge 1
Overcharge
2
Over-
discharge 2
Overcharge
3
Over-
discharge 3
Overcharge
4
Over-
discharge 4
Discharge
overcurrent 2
Load short circuit
Delay circuit
Remark Diodes in the figure are parasitic diodes.
Figure 1
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 3
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 Dimension Tape Reel
Environmental code = S FT016-A-P-SD FT016-A-C-SD FT016-A-R-SD
16-Pin TSSOP Environmental code = U FT016-A-P-SD FT016-A-C-SD FT016-A-R-S1
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
4
3. Product name list
Table 2
Product Name
Overcharge
Detection
Voltage
[VCU]
Overcharge
Release
Voltage
[VCL]
Overdischarge
Detection
Voltage
[VDL]
Overdischarge
Release
Voltage
[VDU]
Discharge
Overcurrent
Detection
Voltage 1
[VDIOV1]
0 V Battery
Charge
Function
Power-down
Function
S-8204BAB-TCT1y 4.350 V 4.150 V 2.00 V 2.70 V 0.250 V Available Available
S-8204BAC-TCT1y 4.225 V 4.075 V 2.30 V 3.00 V 0.100 V Available Available
S-8204BAD-TCT1y 3.800 V 3.600 V 2.00 V 2.30 V 0.300 V Available Available
S-8204BAE-TCT1y 4.350 V 4.150 V 2.50 V 3.00 V 0.250 V Available Available
S-8204BAF-TCT1y 4.350 V 4.150 V 2.30 V 3.00 V 0.100 V Available Available
S-8204BAG-TCT1y 4.350 V 4.150 V 2.80 V 3.30 V 0.100 V Available Available
S-8204BAH-TCT1y 4.200 V 4.000 V 2.60 V 3.00 V 0.100 V Available Available
S-8204BAI-TCT1y 3.900 V 3.800 V 2.00 V 2.00 V 0.150 V Unavailable Available
S-8204BAJ-TCT1y 4.300 V 4.100 V 2.50 V 2.90 V 0.250 V Available Available
S-8204BAK-TCT1y 3.650 V 3.500 V 2.40 V 3.00 V 0.100 V Available Available
S-8204BAL-TCT1y 4.200 V 4.100 V 2.70 V 2.90 V 0.250 V Available Available
S-8204BAM-TCT1y 4.400 V 4.200 V 2.00 V 2.70 V 0.250 V Available Available
S-8204BAN-TCT1y 4.100 V 4.100 V 2.00 V 2.50 V 0.150 V Unavailable Available
S-8204BAO-TCT1y 3.900 V 3.600 V 2.50 V 2.70 V 0.100 V Unavailable Available
S-8204BAP-TCT1y 4.320 V 4.120 V 2.40 V 3.00 V 0.100 V Unavailable Available
S-8204BAQ-TCT1y 3.800 V 3.600 V 2.00 V 2.30 V 0.150 V Available Available
S-8204BAR-TCT1y 3.850 V 3.650 V 2.50 V 2.70 V 0.150 V Available Available
S-8204BAS-TCT1y 4.250 V 4.150 V 2.80 V 3.00 V 0.150 V Available Available
S-8204BAT-TCT1y 3.650 V 3.500 V 2.00 V 2.70 V 0.100 V Available Available
S-8204BAU-TCT1y 4.200 V 4.100 V 2.70 V 2.90 V 0.100 V Available Available
S-8204BAV-TCT1y 3.900 V 3.600 V 2.00 V 2.70 V 0.100 V Available Available
S-8204BAW-TCT1y 3.800 V 3.650 V 2.20 V 2.50 V 0.100 V Available Available
S-8204BAX-TCT1y 4.250 V 4.250 V 2.00 V 2.00 V 0.100 V Unavailable Available
S-8204BAY-TCT1y 3.900 V 3.600 V 2.30 V 2.50 V 0.100 V Available Available
S-8204BAZ-TCT1y 4.250 V 4.100 V 3.00 V 3.30 V 0.100 V Available Available
S-8204BBA-TCT1y 4.250 V 4.150 V 2.50 V 3.00 V 0.100 V Available Available
S-8204BBB-TCT1y 4.250 V 4.150 V 2.70 V 3.00 V 0.250 V Unavailable Available
S-8204BBC-TCT1y 4.250 V 4.100 V 2.80 V 3.20 V 0.250 V Unavailable Available
S-8204BBD-TCT1y 4.300 V 4.200 V 2.30 V 3.00 V 0.100 V Available Available
S-8204BBE-TCT1y 3.800 V 3.600 V 2.00 V 2.30 V 0.100 V Available Available
S-8204BBF-TCT1y 3.800 V 3.600 V 2.00 V 2.30 V 0.050 V Available Available
S-8204BBG-TCT1y 4.250 V 4.100 V 2.80 V 3.30 V 0.100 V Unavailable Available
S-8204BBH-TCT1y 4.250 V 4.150 V 2.70 V 3.00 V 0.125 V Unavailable Available
S-8204BBI-TCT1U 4.250 V 4.150 V 2.70 V 3.00 V 0.125 V Unavailable Unavailable
S-8204BBJ-TCT1U 4.250 V 4.150 V 2.70 V 3.00 V 0.150 V Unavailable Unavailable
S-8204BBK-TCT1U 4.250 V 4.190 V 2.80 V 3.00 V 0.150 V Available Available
S-8204BBL-TCT1U 4.230 V 4.230 V 2.80 V 3.00 V 0.150 V Available Available
Remark 1. Please contact our sales office for products with detection voltage values other than those specified above.
2. y: S or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 5
Pin Configuration
1. 16-Pin TSSOP
5
4
6
8
7
2
3
1
12
13
11
9
10
15
14
16
Top view
Figure 2
Table 3
Pin No. Symbol Description
1 COP Connection pin of charge control FET gate (Pch open-drain output)
2 VMP Voltage detection pin between VDD pin and VMP pin
3 DOP Connection pin of discharge control FET gate (CMOS output)
4 VINI Voltage detection pin between VSS pin and VINI pin,
discharge overcurrent 1 / 2 detection pin, load short-circuit detection pin
5 CDT Capacitor connection pin for delay for overdischarge detection
6 CCT Capacitor connection pin for delay for overcharge detection
7 CIT Capacitor connection pin for delay for discharge overcurrent 1 / 2
8 SEL
Pin for switching 3-series or 4-series cell
• VSS level: 3-series cell
• VDD level: 4-series cell
9 VSS Input pin for negative power supply,
connection pin for negative voltage of battery 4
10 VC4 Connection pin for negative voltage of battery 3,
connection pin for positive voltage of battery 4
11 VC3 Connection pin for negative voltage of battery 2,
connection pin for positive voltage of battery 3
12 VC2 Connection pin for negative voltage of battery 1,
connection pin for positive voltage of battery 2
13 VC1 Connection pin for positive voltage of battery 1
14 VDD Input pin for positive power supply,
connection pin for positive voltage of battery 1
15 CTLD Discharge FET control pin
16 CTLC Charge FET control pin
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
6
Absolute Maximum Ratings
Table 4
(Ta = +25°C unless otherwise specified)
Item Symbol Applied Pin Absolute Maximum Rating Unit
Input voltage between VDD pin and
VSS pin VDS − V
SS − 0.3 to VSS + 24 V
Input pin voltage VIN
VC1, VC2, VC3, VC4,
CTLC, CTLD, SEL, CCT,
CDT, CIT, VINI
VSS − 0.3 to VDD + 0.3 V
VMP pin input voltage VVMP VMP VSS − 0.3 to VSS + 24 V
DOP pin output voltage VDOP DOP VSS − 0.3 to VDD + 0.3 V
COP pin output voltage VCOP COP VDD − 24 to VDD + 0.3 V
Power dissipation PD − 1100*1 mW
Operation ambient temperature Topr − −40 to +85 °C
Storage temperature Tstg − −40 to +125 °C
*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 physica
l
damage. These values must therefore not be exceeded under any conditions.
0 50 100
150
800
400
0
Power Dissipation (P
D
) [mW]
Ambient Temperature (Ta) [°C]
1000
600
200
1200
Figure 3 Power Dissipation of Package (When Mounted on Board)
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 7
Electrical Characteristics
Table 5 (1 / 2)
(Ta = +25°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Detection Voltage
Overcharge detection voltage n
(n = 1, 2, 3, 4) VCUn 3.65 V to 4.6 V, adjustable,
50 mV step
VCUn
− 0.025 VCUn VCUn
+ 0.025 V 2
VCL ≠ VCU VCLn
− 0.05 VCLn VCLn
+ 0.05 V 2
Overcharge release voltage n
(n = 1, 2, 3, 4) VCLn
3.5 V to 4.6 V,
adjustable,
50 mV step VCL = VCU VCLn
− 0.025 VCLn VCLn
+ 0.025 V 2
Overdischarge detection voltage n
(n = 1, 2, 3, 4) VDLn 2.0 V to 3.0 V, adjustable,
100 mV step
VDLn
− 0.08 VDLn VDLn
+ 0.08 V 2
VDL ≠ VDU VDUn
− 0.10 VDUn VDUn
+ 0.10 V 2
Overdischarge release voltage n
(n = 1, 2, 3, 4) VDUn
2.0 V to 3.4 V,
adjustable,
100 mV step VDL = VDU VDUn
− 0.08 VDUn VDUn
+ 0.08 V 2
Discharge overcurrent detection
voltage 1 VDIOV1 0.05 V to 0.30 V, adjustable VDIOV1
− 0.015 VDIOV1 VDIOV1
+ 0.015 V 2
Discharge overcurrent detection
voltage 2 VDIOV2 − 0.4 0.5 0.6 V 2
Load short-circuit detection
voltage VSHORT − 0.7 1.0 1.3 V 2
Temperature coefficient 1*1 TCOE1 Ta = 0°C to 50°C*3 −1.0 0 1.0 mV/°C 2
Temperature coefficient 2*2 TCOE2 Ta = 0°C to 50°C*3 −0.5 0 0.5 mV/°C 2
Delay Time Function*4
CCT pin internal resistance RINC V1 = 4.7 V, V2 = V3 = V4 = 3.5 V 6.15 8.31 10.2 MΩ 3
CDT pin internal resistance RIND V1 = 1.5 V, V2 = V3 = V4 = 3.5 V 615 831 1020
kΩ 3
CIT pin internal resistance 1 RINI1 V1 = V2 = V3 = V4 = 3.5 V 123 166 204 kΩ 3
CIT pin internal resistance 2 RINI2 V1 = V2 = V3 = V4 = 3.5 V 12.3 16.6 20.4 kΩ 3
CCT pin detection voltage VCCT VDS = 15.2 V,
V1 = 4.7 V, V2 = V3 = V4 = 3.5 V
VDS
× 0.68
VDS
× 0.70
VDS
× 0.72 V 3
CDT pin detection voltage VCDT VDS = 12.0 V,
V1 = 1.5 V, V2 = V3 = V4 = 3.5 V
VDS
× 0.68
VDS
× 0.70
VDS
× 0.72 V 3
CIT pin detection voltage VCIT VDS = 14.0 V,
V1 = V2 = V3 = V4 = 3.5 V
VDS
× 0.68
VDS
× 0.70
VDS
× 0.72 V 3
Load short-circuit detection
delay time tSHORT FET gate capacitance = 2000 pF 100 300 600 μs 3
0 V Battery Charge Function
0 V battery charge starting
voltage V0CHA 0 V battery charge function
"available" − 1.2 2.0 V 2
0 V battery charge inhibition
battery voltage V0INH 0 V battery charge function
"unavailable" 0.4 0.7 1.1 V 2
Internal Resistance
Resistance between
VMP pin and VDD pin RVMD − 0.5 1 1.5 MΩ 4
Resistance between
VMP pin and VSS pin RVMS With power-down function 450 900 1800 kΩ 4
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
8
Table 5 (2 / 2)
(Ta = +25°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Input Voltage
Operation voltage between VDD
pin and VSS pin VDSOP Fixed output voltage of DOP pin and
COP pin 2 − 22 V 2
CTLC pin input voltage "H" VCTLCH V1 = V2 = V3 = V4 = 3.5 V − − 13.2 V 2
CTLC pin input voltage "L" VCTLCL V1 = V2 = V3 = V4 = 3.5 V 10.1 − − V 2
CTLD pin input voltage "H" VCTLDH V1 = V2 = V3 = V4 = 3.5 V − − 13.2 V 2
CTLD pin input voltage "L" VCTLDL V1 = V2 = V3 = V4 = 3.5 V 10.1 − − V 2
SEL pin input voltage "H" VSELH VDS = 14.0 V,
V1 = V2 = V3 = V4 = 3.5 V
VDS
× 0.8 − − V 2
SEL pin input voltage "L" VSELL VDS = 14.0 V,
V1 = V2 = V3 = V4 = 3.5 V − − VDS
× 0.2 V 2
Input Current
Current consumption
during operation IOPE V1 = V2 = V3 = V4 = 3.5 V − 15 33 μA 1
Current consumption
during power-down IPDN With power-down function,
V1 = V2 = V3 = V4 = 1.5 V − − 0.1 μA 1
Current consumption
during overdischarge IOPED Without power-down function,
V1 = V2 = V3 = V4 = 1.5 V − 14 32 μA 1
VC1 pin current IVC1 V1 = V2 = V3 = V4 = 3.5 V 0.5 1.5 3.0 μA 4
VC2 pin current IVC2 V1 = V2 = V3 = V4 = 3.5 V −0.3 0 0.3 μA 4
VC3 pin current IVC3 V1 = V2 = V3 = V4 = 3.5 V −0.3 0 0.3 μA 4
VC4 pin current IVC4 V1 = V2 = V3 = V4 = 3.5 V −0.3 0 0.3 μA 4
CTLC pin current "H" ICTLCH V1 = V2 = V3 = V4 = 3.5 V,
VCTLC = VDD 0.4 0.6 0.8 μA 4
CTLC pin current "L" ICTLCL V1 = V2 = V3 = V4 = 3.5 V,
maximum current flowing from CTLC pin
−20.0 −10.0 −3.0 μA 4
CTLD pin current "H" ICTLDH V1 = V2 = V3 = V4 = 3.5 V,
VCTLD = VDD 0.4 0.6 0.8 μA 4
CTLD pin current "L" ICTLDL V1 = V2 = V3 = V4 = 3.5 V,
maximum current flowing from CTLD pin
−20.0 −10.0 −3.0 μA 4
SEL pin current "H" ISELH V1 = V2 = V3 = V4 = 3.5 V,
VSEL = VDD − − 0.1 μA 4
SEL pin current "L" ISELL V1 = V2 = V3 = V4 = 3.5 V,
VSEL = VSS −0.1 − − μA 4
Output Current
COP pin source current ICOH V
COP = VDD − 0.5 V 10 − − μA 4
COP pin leakage current ICOL V
COP = 0 V − − 0.1 μA 4
DOP pin source current IDOH V
DOP = VDD − 0.5 V 10 − − μA 4
DOP pin sink current IDOL V
DOP = VSS + 0.5 V 10 − − μA 4
*1. Voltage temperature coefficient 1: Overcharge detection voltage
*2. Voltage temperature coefficient 2: Discharge overcurrent detection voltage 1
*3. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed
by design, not tested in production.
*4. Delay time function is described in " Operation" in detail.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 9
Test Circuit
This chapter describes how to test the S-8204B Series. In case of selecting to use it for 4-series cell battery, set SEL pin
= VDD. For 3-series cell battery, set SEL pin = VSS and short between the VC4 pin and the VSS pin.
1. Current consumption during operation and power-down
(Test circuit 1)
1. 1 Current consumption during operation (IOPE)
The current at the VSS pin when V1 = V2 = V3 = V4 = 3.5 V and VVMP = VDD is the current consumption during
operation (IOPE).
1. 2 Current Consumption during power-down (IPDN) (with power-down function)
The current at the VSS pin when V1 = V2 = V3 = V4 = 1.5 V and VVMP = VSS is the current consumption during
power-down (IPDN).
1. 3 Current consumption during overdischarge (IOPED) (without power-down function)
The current at the VSS pin when V1 = V2 = V3 = V4 = 1.5 V and VVMP = VSS is the current consumption during
overdischarge (IOPED).
2. Overcharge detection voltage, overcharge release voltage, overdischarge detection voltage,
overdischarge release voltage, discharge overcurrent detection voltage 1, discharge overcurrent
detection voltage 2, load short-circuit detection voltage, CTLC pin input voltage "H", CTLC pin
input voltage "L", CTLD pin input voltage "H", CTLD pin input voltage "L", SEL pin input voltage
"H", SEL pin input voltage "L"
(Test circuit 2)
Confirm both the COP pin and the DOP pin are in "H" (its voltage level is VDS × 0.9 V or more) after setting VVMP =
VSEL = VCTLC = VCTLD = VDD, VVINI = VSS, CCT pin = Open, CDT pin = Open, CIT pin = Open, V1 = V2 = V3 = V4 =
3.5 V. (This status is referred to as initial status.)
2. 1 Overcharge detection voltage (VCU1), overcharge release voltage (VCL1)
The overcharge detection voltage (VCU1) is a voltage at V1; when the COP pin's voltage is set to "L" (its voltage
level is VDD × 0.1 V or less) after increasing a voltage at V1 gradually from the initial status. After that, decreasing
a voltage at V1 gradually, a voltage at V1 when the COP pin's voltage is set to "H"; is the overcharge release
voltage (VCL1).
2. 2 Overdischarge detection voltage (VDL1), overdischarge release voltage (VDU1)
The overdischarge detection voltage (VDL1) is a voltage at V1; when the DOP pin's voltage is set to "L" after
decreasing a voltage at V1 gradually from the initial status. After that, increasing a voltage at V1 gradually, a
voltage at V1 when the DOP pin’s voltage is set to "H"; is the overdischarge release voltage (VDU1).
By changing the voltage at Vn (n = 2 to 4), users can define the overcharge detection voltage (VCUn), the
overcharge release voltage (VCLn), the overdischarge detection voltage (VDLn), the overdischarge release voltage
(VDUn) as well when n = 1.
2. 3 Discharge overcurrent detection voltage 1 (VDIOV1)
The discharge overcurrent detection voltage 1 (VDIOV1) is the VINI pin's voltage; when the DOP pin's voltage is set
to "L" after increasing the VINI pin’s voltage gradually from the initial status.
2. 4 Discharge overcurrent detection voltage 2 (VDIOV2)
The discharge overcurrent detection voltage 2 (VDIOV2) is a voltage at the VINI pin; when a flowing current from
the CIT pin reaches 500 μA or more after increasing the VINI pin's voltage gradually from the initial status.
2. 5 Load short-circuit detection voltage (VSHORT)
The load short-circuit detection voltage (VSHORT) is the VINI pin's voltage; when the DOP pin's voltage is set to "L"
after increasing the VINI pin's voltage gradually after setting the CIT pin's voltage VSS level from the initial status.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
10
2. 6 CTLC pin input voltage "H" (VCTLCH), CTLC pin input voltage "L" (VCTLCL)
The CTLC pin input voltage "L" (VCTLCL) is the CTLC pin's voltage; when the COP pin's voltage is set to "L" after
decreasing the CTLC pin's voltage gradually from the initial status. After that, increasing the CTLC pin's voltage
gradually, the CTLC pin's voltage when the COP pin's voltage is set to "H"; is the CTLC pin input voltage "H"
(VCTLCH).
2. 7 CTLD pin input voltage "H" (VCTLDH), CTLD pin input voltage "L" (VCTLDL)
The CTLD pin input voltage "L" (VCTLDL) is the CTLD pin's voltage; when the DOP pin's voltage is set to "L" after
decreasing the CTLD pin's voltage gradually from the initial status. After that, increasing the CTLD pin's voltage
gradually, the CTLD pin's voltage when the DOP pin's voltage is set to "H"; is the CTLD pin input voltage "H"
(VCTLDH).
2. 8 SEL pin input voltage "H" (VSELH), SEL pin input voltage "L" (VSELL)
Start from the initial status, set V4 = 0 V. Confirm the DOP pin is in "L". After that, decreasing the SEL pin's
voltage gradually, the SEL pin's voltage when the DOP pin's voltage is set to "H"; is the SEL pin input voltage "L"
(VSELL). After that, increasing the SEL pin's voltage gradually, the SEL pin's voltage when the DOP pin's voltage is
set to "L"; is the SEL pin input voltage "H" (VSELH).
3. CCT pin internal resistance, CDT pin internal resistance, CIT pin internal resistance 1, CIT pin
internal resistance 2, CCT pin detection voltage, CDT pin detection voltage, CIT pin detection
voltage, load short-circuit detection delay time
(Test circuit 3)
Confirm both the COP pin and the DOP pin are in "H" (its voltage level is VDS × 0.9 V or more) after setting VVMP =
VSEL = VCTLC = VCTLD = VDD, VVINI = CCT = CDT = CIT = VSS, V1 = V2 = V3 = V4 = 3.5 V. (This status is referred to
as initial status.)
3. 1 CCT pin internal resistance (RINC)
The CCT pin internal resistance (RINC) is RINC = VDS / ICCT, ICCT is the current which flows from the CCT pin when
setting V1 = 4.7 V from the initial status.
3. 2 CDT pin internal resistance (RIND)
The CDT pin internal resistance (RIND) is RIND = VDS / ICDT, ICDT is the current which flows from the CDT pin when
setting V1 = 1.5 V from the initial status.
3. 3 CIT pin internal resistance 1 (RINI1)
The CIT pin internal resistance 1 (RINI1) is RINI1 = VDS / ICIT1, ICIT1 is the current which flows from the CIT pin when
setting VVINI = VDIOV1 max. + 0.05 V from the initial status.
3. 4 CIT pin internal resistance 2 (RINI2)
The CIT pin internal resistance 2 (RINI2) is RINI2 = VDS / ICIT2, ICIT2 is the current which flows from the CIT pin when
setting VVINI = VDIOV2 max. + 0.05 V from the initial status.
3. 5 CCT pin detection voltage (VCCT)
The CCT pin detection voltage (VCCT) is the voltage at the CCT pin when the COP pin's voltage is set to "L"
(voltage VDS × 0.1 V or less) after increasing the CCT pin's voltage gradually, after setting V1 = 4.7 V from the
initial status.
3. 6 CDT pin detection voltage (VCDT)
The CDT pin detection voltage (VCDT) is the voltage at the CDT pin when the DOP pin's voltage is set to "L"
(voltage VDS × 0.1 V or less) after increasing the CDT pin's voltage gradually, after setting V1 = 1.5 V from the
initial status.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 11
3. 7 CIT pin detection voltage (VCIT)
The CIT pin detection voltage (VCIT) is the voltage at the CIT pin when the DOP pin's voltage is set to "L" (voltage
VDS × 0.1 V or less) after increasing the CIT pin's voltage gradually, after setting VVINI = VDIOV1 max. + 0.05 V from
the initial status.
3. 8 Load short-circuit detection delay time (tSHORT)
Load short-circuit detection delay time (tSHORT) is a period in which the VINI pin's voltage changes from "H" to "L"
by changing the VINI pin's voltage instantaneously from the initial status to VSHORT max. + 0.05 V.
4. 0 V battery charge starting voltage (0 V battery charge function "available"), 0 V battery charge
inhibition battery voltage (0 V battery charge function "unavailable")
(Test circuit 2)
Confirm both COP pin and DOP pin are in "H" (its voltage level is VDS × 0.9 V or more) after setting VVMP = VSEL =
VCTLC = VCTLD = VDD, VVINI = VSS, CCT pin = Open, CDT pin = Open, CIT pin = Open, V1 = V2 = V3 = V4 = 3.5 V.
(This status is referred to as initial status.)
According to user's selection of the function to charge 0 V battery, either function of voltage for start charging 0 V
battery or battery voltage for inhibit charging 0 V battery is applied to each product.
4. 1 0 V battery charge starting voltage (V0CHA) (0 V battery charge function "available")
0 V battery charge starting voltage (V0CHA) is a voltage at V1; when a voltage at the COP pin is set to "H" after
increasing a voltage at V1 gradually, after setting V1 = V2 = V3 = V4 = 0 V from the initial status.
4. 2 0 V battery charge inhibition battery voltage (V0INH) (0 V battery charge function "unavailable")
0 V battery charge inhibition battery voltage (V0INH) is a voltage at V1; when a voltage at the COP pin is set to "L"
after decreasing a voltage at V1 gradually from the initial status.
5. Resistance between VMP pin and VDD pin, resistance between VMP pin and VSS pin, VC1 pin
current, VC2 pin current, VC3 pin current, VC4 pin current, CTLC pin current "H", CTLC pin
current "L", CTLD pin current "H", CTLD pin current "L", SEL pin current "H", SEL pin current
"L", COP pin source current, COP pin leakage current, DOP pin source current, DOP pin sink
current
(Test circuit 4)
Set VCTLC = VCTLD = VVMP = VSEL = VDD, VVINI = VSS, V1 = V2 = V3 = V4 = 3.5 V, set other pins open. (This status is
referred to as initial status.)
5. 1 Resistance between VMP pin and VDD pin (RVMD)
The value of resistance between VMP pin and VDD pin (RVMD) can be defined by RVMD = VDS / IVMD by using the
VMP pin's current (IVMD) when VVINI = 1.5 V and VVMP = VSS after the initial status.
5. 2 Resistance between VMP pin and VSS pin (RVMS)
The value of resistance between VMP pin and VSS pin (RVMS) can be defined by RVMS = VDS / IVMS by using the
VMP pin's current (IVMS) when V1 = V2 = V3 = V4 = 1.8 V after the initial status.
5. 3 VC1 pin current (IVC1), VC2 pin current (IVC2), VC3 pin current (IVC3), VC4 pin current (IVC4)
In the initial status, each current flows in the VC1 pin, VC2 pin, VC3 pin, VC4 pin is the VC1 pin current (IVC1), the
VC2 pin current (IVC2), the VC3 pin current (IVC3), the VC4 pin current (IVC4), respectively.
5. 4 CTLC pin current "H" (ICTLCH), CTLC pin current "L" (ICTLCL)
In the initial status, a current which flows in the CTLC pin is the CTLC pin current "H" (ICTLCH). After that,
decreasing a voltage at the CTLC pin gradually, the maximum current which flows in the CTLC pin is; the CTLC
pin current "L" (ICTLCL).
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
12
5. 5 CTLD pin current "H" (ICTLDH), CTLD pin current "L" (ICTLDL)
In the initial status, a current which flows in the CTLD pin is the CTLD pin current "H" (ICTLDH). After that,
decreasing a voltage at the CTLD pin gradually, the maximum current which flows in the CTLD pin is; the CTLD
pin current "L" (ICTLDL).
5. 6 SEL pin current "H" (ISELH), SEL pin current "L" (ISELL)
In the initial status, a current which flows in the SEL pin is the SEL pin current "H" (ISELH). After that, a current
which flows in the SEL pin when setting VSEL = VSS is; the SEL pin current "L" (ISELL).
5. 7 COP pin source current (ICOH), COP pin leakage current (ICOL)
Start from the initial status, set VCOP = VDD − 0.5 V, a current which flows in the COP pin is the COP pin source
current (ICOH). After that, a current which flows in the COP pin when setting V1 = V2 = V3 = V4 = 5.5 V, VCOP =
VSS is; the COP pin leakage current (ICOL).
5. 8 DOP pin source current (IDOH), DOP pin sink current (IDOL)
Start from the initial status, set VDOP = VDD − 0.5 V, a current which flows in the DOP pin is the DOP pin source
current (IDOH). After that, a current which flows in the DOP pin when setting V1 = V2 = V3 = V4 = 1.8 V, VDOP =
VSS + 0.5 V is; the DOP pin sink current (IDOL).
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 13
C1 =
0.1 μF
V1
V2
V4
V3
A
1COP
2VMP
3DOP
4VINI
5 CDT
6 CCT
7CIT
8
16
VDD
15
VC1
14
VC2
13
VC3
12
VC4
11
CTLC
CTLD
VSS 9
S-8204B
SEL
10
Figure 4 Test Circuit 1
C1 =
0.1 μF
V1
V2
V4
V3
V
V
1COP
2VMP
3DOP
4VINI
5 CDT
6CCT
7CIT
8
16
VDD
15
VC1
14
VC2
13
VC3
12
VC4
11
CTLC
CTLD
VSS 9
S-8204B
SEL
10
A
Figure 5 Test Circuit 2
C1 =
0.1 μF
V1
V2
V4
V3
1COP
2VMP
3DOP
4VINI
5 CDT
6 CCT
7CIT
8
16
VDD
15
VC1
14
VC2
13
VC3
12
VC4
11
CTLC
CTLD
VSS 9
S-8204B
SEL
10
V
V
A
A
A
Figure 6 Test Circuit 3
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
14
C1 =
0.1 μF
V1
V2
V4
V3
A
A
A
A
A
A
A
1 COP
2 VMP
3 DOP
4 VINI
5 CDT
6 CCT
7 CIT
8
16
VDD
15
VC1
14
VC2
13
VC3
12
VC4
11
CTLC
CTLD
VSS 9
S-8204B
SEL
10
A
A
A
Figure 7 Test Circuit 4
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 15
Operation
Remark Refer to " Connection Examples of Battery Protection IC".
1. Normal status
In the S-8204B Series, both of the COP pin and the DOP pin get the VDD level; when all values of battery voltage are
in the range of overdischarge detection voltage (VDLn) to overcharge detection voltage (VCUn), and due to the
discharge current, the VINI pin's voltage is discharge overcurrent detection voltage (VDIOV1) or less. This is the normal
status. At this time, the charge FET and discharge FET are on.
2. Overcharge status
In the S-8204B Series, any voltage of the batteries increases to the level of VCUn or more, the COP pin is set in high
impedance. This is the overcharge status. The COP pin is pulled down to EB− by an external resistor so that the
charge FET is turned off and it stops charging.
This overcharge status is released if either condition mentioned below is satisfied;
(1) In case that the VMP pin voltage is 39 / 40 × V
DS or more; all voltages of the batteries are in the level of
overcharge release voltage (VCLn) or less.
(2) In case that the VMP pin voltage is 39 / 40 × VDS or less; all voltages of the batteries are in the level of VCUn or
less.
3. Overdischarge status
In the S-8204B Series, when any voltage of the batteries decreases to the level of VDLn or less, the DOP pin voltage
gets the VSS level. This is the overdischarge status. The discharge FET is turned off and it stops discharging.
This overcharge status is released if either condition mentioned below is satisfied;
(1) To release; the VMP pin voltage is in the VDD level or more, all voltages of the batteries are in the VDLn level or
more.
(2) To release; the VMP pin voltage is VDS / 2 or more and the VMP pin voltage is in the VDD level or less, all
voltages of the batteries are in the level of overdischarge release voltage (VDUn) or more.
4. Power-down status
In the S-8204B Series, either the products with power-down function or those without power-down function can be
selected.
4. 1 With power-down function
When the S-8204B Series reaches the overdischarge status, the VMP pin is pulled down to the VSS level by a
resistor between the VMP pin and the VSS pin (RVMS). If the VMP pin voltage decreases to the level of VDS / 2 or
less, almost every circuit in the S-8204B Series stops working so that the current consumption decreases to the
level of current consumption at power down (IPDN) or less. This is the power-down status.
The power-down status is released if the following condition is satisfied.
(1) The VMP pin voltage gets VDS / 2 or more.
4. 2 Without power-down function
The VMP pin is not pulled down even when the S-8204B Series reaches the overdischarge status. The
overdischarge status is maintained even If the VMP pin voltage decreases to the level of VDS / 2 or less, and the
current consumption decreases to the level of current consumption during overdischarge (IOPED) or less.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
16
5. Discharge overcurrent status
In the S-8204B Series, in batteries in the normal status, the discharging current increases more than a certain value.
As a result, if the status in which the VINI pin voltage increases to the level of VDIOV1 or more, the DOP pin gets the
VSS level. This is the discharge overcurrent status. At this time, the discharge control FET is turned off and it stops
discharging.
The S-8204B Series has three levels for discharge overcurrent detection (VDIOV1, VDIOV2, VSHORT). In the status of
discharge overcurrent, the COP pin is set in high impedance. The VMP pin is pulled up to the VDD level by a resistor
between the VMP pin and the VDD pin (RVMD).
The S-8204B Series' operations against discharge overcurrent detection voltage 2 (VDIOV2) and load short-circuit
detection voltage (VSHORT) are as well in VDIOV1.
The discharge overcurrent status is released if the following condition is satisfied.
(1) The VMP pin voltage gets VDS −1.2 V (typ.) or more.
6. 0 V battery charge function
In the S-8204B Series, regarding how to charge a discharged battery (0 V battery), users are able to select either
function mentioned below.
(1) Allow to charge a 0 V battery (enable to charge a 0 V battery)
A 0 V battery is charged when the voltage between the VDD pin and the VSS pin (VDS) is 0 V battery charge
starting voltage (V0CHA) or more.
(2) Inhibit charging a 0 V battery (unable to charge a 0 V battery)
A 0 V battery is not charged when the battery voltage is 0 V battery charge inhibition battery voltage (V0INH) or
less.
Caution When the VDD pin voltage is less than the minimum value of operation voltage between the VDD
pin and the VSS pin (VDSOP), the operation of the S-8204B Series is not assured.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 17
7. Delay time setting
In the S-8204B Series, users are able to set delay time for the period; from detecting any voltage of the batteries or
detecting changes in the voltage at the VINI pin, to the output to the COP pin and the DOP pin. Each delay time is
determined by a resistor in the S-8204B Series and an external capacitor.
In the overchage detection, when any voltage of the batteries gets VCUn or more, the S-8204B Series starts charging
to the CCT pin's capacitor (CCCT) via the CCT pin's internal resistor (RINC). After a certain period, the COP pin is set in
high impedance if the voltage at the CCT pin reaches the CCT pin detection voltage (VCCT). This period is overcharge
detection delay time (tCU).
tCU is calculated using the following equation (VDS = V1 + V2 + V3 + V4).
tCU [s] = −ln (1 − VCCT / VDS ) × CCCT [μF] × RINC [MΩ]
= −ln (1 − 0.7 (typ.)) × CCCT [μF] × 8.31 [MΩ] (typ.)
= 10.0 [MΩ] (typ.) × CCCT [μF]
Overdischarge detection delay time (tDL), discharge overcurrent detection delay time 1 (tDIOV1), discharge overcurrent
detection delay time 2 (tDIOV2) are calculated using the following equations as well.
tDL [ms] = −ln (1 − VCDT / VDS) × CCDT [μF] × RIND [kΩ]
tDIOV1 [ms] = −ln (1 − VCIT / VDS) × CCIT [μF] × RINI1 [kΩ]
tDIOV2 [ms] = −ln (1 − VCIT / VDS) × CCIT [μF] × RINI2 [kΩ]
In case CCCT = CCDT = CCIT = 0.1 [μF], each delay time tCU, tDL, tDIOV1, tDIOV2 is calculated as follows.
tCU [s] = 10.0 [MΩ] (typ.) × 0.1 [μF] = 1.0 [s] (typ.)
tDL [ms] = 1000 [kΩ] (typ.) × 0.1 [μF] = 100 [ms] (typ.)
tDIOV1 [ms] = 200 [kΩ] (typ.) × 0.1 [μF] = 20 [ms] (typ.)
tDIOV2 [ms] = 20 [kΩ] (typ.) × 0.1 [μF] = 2.0 [ms] (typ.)
Load short-circuit detection delay time (tSHORT) is fixed internally.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
18
8. CTLC pin and CTLD pin
The S-8204B Series has two pins to control.
The CTLC pin controls the output voltage from the COP pin, the CTLD pin controls the output voltage from the DOP
pin. Thus it is possible for users to control the output voltages from the COP pin and DOP pin independently. These
controls precede the battery protection circuit.
Table 6 Conditions Set by CTLC Pin
CTLC Pin COP Pin
"H"*1 Normal status*4
Open*2 "High-Z"
"L"*3 "High-Z"
*1. "H"; CTLC ≥ VCTLCH
*2. Pulled down by ICTLCH
*3. "L"; CTLC ≤ VCTLCL
*4. The status is controlled by the voltage detection circuit.
Table 7 Conditions Set by CTLD Pin
CTLD Pin DOP Pin
"H"*1 Normal status*4
Open*2 VSS level
"L"*3 VSS level
*1. "H"; CTLD ≥ VCTLDH
*2. Pulled down by ICTLDH
*3. "L"; CTLD ≤ VCTLDL
*4. The status is controlled by the voltage detection circuit.
Caution Note that when the power supply fluctuates, unexpected behavior might occur if an electrical
potential is generated between the potentials of "H" level input to the CTLC pin / the CTLD pin and
IC's VDD by external filters RVDD1 and CVDD1.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 19
9. SEL pin
The S-8204B Series has a pin to switch-control the protection for 3-cell or 4-cell battery.
The overdischarge detection for V4-cell is inhibited by setting the SEL pin "L", so that short-circuiting the V4 cell does
not allow the overdischarge detection. This setting makes it possible to use the S-8204B Series for 3-cell protection.
The control by this SEL pin precedes the battery protection circuit. Be sure to use the SEL pin in "H" or "L".
Table 8 Conditions Set by SEL Pin
SEL Pin Condition
"H"*1 4-cell protection
Open Indefinite
"L"*2 3-cell protection
*1. "H"; SEL ≥ VSELH
*2. "L"; SEL ≤ VSELL
In cascade connection, it is possible to use the S-8204B Series for protecting 6-cell, 7-cell or 8-cell battery by
combining the electrical level of the SEL pin.
Table 9 Conditions Set by SEL Pin in Cascade Connection
SEL pin in S-8204B (1) SEL pin in S-8204B (2) Condition
"L"*1 "L"*1 6-series cell protection
"L"*1 "H"*2 7-series cell protection
"H"*2 "H"*2 8-series cell protection
*1. "L"; SEL ≤ VSELL
*2. "H"; SEL ≥ VSELH
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
20
Timing Chart (Circuit in Figure 11)
1. Overcharge detection and overdischarge detection (with power-down function)
(n = 1 to 4)
VCUn
VDLn
VCLn
Battery voltage
VEB-
COP pin voltage
DOP pin voltage
VSS
Charger connection
Load connection
Status
*1
Overcharge detection
delay time (tCU)
Overdischarge detection
delay time (tDL)
(1) (2) (1) (3) (1)
39 / 40 × VDD
VSS
VMP pin voltage 1 / 2
×
V
DD
VDD
VDD
High-Z
VDD
(4)
High-Z
(3)
*1. (1): Normal status
(2): Overcharge status
(3): Overdischarge status
(4): Power-down status
Remark The charger is assumed to charge with a constant current. VEB- indicates the open voltage of the charger.
Figure 8
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 21
2. Overcharge detection and overdischarge detection (without power-down function)
(n = 1 to 4)
VCUn
VDLn
VCLn
Battery voltage
VEB-
COP pin voltage
DOP pin voltage
VSS
Charger connection
Load connection
Status
*1
Overcharge detection
delay time (tCU)
Overdischarge detection
delay time (tDL)
(1) (2) (1) (1)
39 / 40 × VDD
VSS
VMP pin voltage 1 / 2
×
V
DD
VDD
VDD
High-Z
VDD
(3)
*1. (1): Normal status
(2): Overcharge status
(3): Overdischarge status
Remark The charger is assumed to charge with a constant current. VEB- indicates the open voltage of the charger.
Figure 9
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
22
3. Discharge overcurrent detection
VCUn
VDUn
VDLn
(n = 1 to 4)
VCLn
Battery voltage
VHC
VHD
VDD
DOP pin voltage
VSS
High-Z
VDD
VEB-
COP pin voltage High-Z
High-Z
VDD
VSS
VMP pin voltage
VSHORT
VDIOV2
V
INI pin voltage
VDD
VDIOV1
Load connection
Status
*1
Discharge overcurrent
detecion delay time 1 (t
DIOV1
)
(1) (2) (1) (1)
Discharge overcurrent
detecion delay time 2 (t
DIOV2
)
Load short-circuit detecion
delay time (t
SHORT
)
(2) (1) (2)
Charger connection
VSS
*1. (1): Normal status
(2): Discharge overcurrent status
Remark The charger is assumed to charge with a constant current. VEB- indicates the open voltage of the charger.
Figure 10
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 23
Connection Examples of Battery Protection IC
1. 4-series cell (with overcurrent protection function)
R
ATL
EB+
EB−
1 COP
2 VMP
3 DOP
4 VINI
5 CDT
6 CCT
7 CIT
8 SEL
VC3 11
VC4 10
VSS 9
VC2 12
VC1 13
VDD 14
CTLD 15
CTLC 16
R
SEL
C
CDT
C
CCT
C
VC1
C
VC2
C
VC3
C
VC4
R
VC4
R
VC3
R
VC2
R
VC1
R
VDD
C
VDD
R
COP
Nch FET1
(Charge FET)
Nch FET2
(Discharge FET)
R
DOP
R
VINI
Z
D1
M1
M2
R
VMP
R
EB−
C
CIT
R
SENSE
S-8204B
R
CTLC
R
CTLD
Figure 11
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
24
Table 10 Constants for External Components (Circuit in Figure 11)
Symbol Min. Typ. Max. Unit
RVC1*1 0.51 1 1 kΩ
RVC2*1 0.51 1 1 kΩ
RVC3*1 0.51 1 1 kΩ
RVC4*1 0.51 1 1 kΩ
RDOP 2 5.1 10 kΩ
RCOP 0.1 1 1 MΩ
RVMP 1 5.1 10 kΩ
RCTLC 1 1 10 kΩ
RCTLD 1 1 10 kΩ
RVINI 1 1 10 kΩ
RSEL 1 1 100 kΩ
RVDD*1 22 47 100
Ω
CVC1*1 0 47 100 nF
CVC2*1 0 47 100 nF
CVC3*1 0 47 100 nF
CVC4*1 0 47 100 nF
CCCT 0.01 0.1 − μF
CCDT 0.01 0.1 − μF
CVDD*1 0 1 2.2
μF
CCIT − 0.1 − μF
RSENSE − − − −
M1 − − − −
M2 − − − −
ZD1 − − − −
REB− − 1 − MΩ
RATL − 20 − MΩ
Nch FET1 − − − −
Nch FET2 − − − −
*1. Set up a filter constant to be RVDD × CVDD = 47 μF • Ω or more, and to be RVC1 × CVC1 = RVC2 × CVC2 =
R
VC3 × CVC3 = RVC4 × CVC4 = RVDD × CVDD.
Caution 1. The above constants may be changed without notice.
2. It is recommended that filter constants between the VDD pin and the VSS pin should be set to
approximately 47 μF • Ω.
e.g., CVDD × RVDD = 1.0 μF × 47 Ω = 47 μF • Ω
Sufficient evaluation of transient power supply fluctuation and overcurrent protection function with
the actual application is needed to determine the proper constants. Contact our sales office in case
the constants should be set to other than 47 μF • Ω.
3. It has not been confirmed whether the operation is normal in circuits other than the above example
of connection. In addition, the example of connection shown above and the constants do not
guarantee proper operation. Perform thorough evaluation using an actual application to set the
constant.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 25
2. 7-series cell (cascade connection without overcurrent protection function)
R
VMP1
EB+
EB−
1COP
2VMP
3DOP
4VINI
5 CDT
6 CCT
7CIT
8SEL
VC3 11
VC4 10
VSS 9
VC2 12
VC1 13
VDD 14
CTLD 15
CTLC 16
R
VINI1
R
SEL1
R
VDD1
R
VC4
R
VC3
R
VC2
R
VC1
1COP
2 VMP
3 DOP
4 VINI
5 CDT
6 CCT
7 CIT
8 SEL
VC3 11
VC4 10
VSS 9
VC2 12
VC1 13
VDD 14
CTLD 15
CTLC 16
R
SEL2
C
CDT2
C
CCT2
R
VMP2
R
VINI2
C
VC3
C
VDD1
C
VC5
C
VC6
C
VC7
C
VC8
R
VC8
R
VC7
R
VC6
R
VC5
R
VDD2
C
VDD2
R
CTLC
R
CTLD
C
CDT1
C
CCT1
R
CIT1
R
CIT2
R
IFC
R
IFD
D
COP
R
COP
Charge FET
C
VC1
C
VC2
Discharge FET
R
DOP
S-8204B
(1)
S-8204B
(2)
Figure 12
Caution 1. It is recommended that filter constants between the VDD pin and the VSS pin should be set to
approximately 47 μF • Ω.
e.g., CVDD × RVDD = 1.0 μF × 47 Ω = 47 μF • Ω
Sufficient evaluation of transient power supply fluctuation and overcurrent protection function with
the actual application is needed to determine the proper constants. Contact our sales office in case
the constants should be set to other than 47 μF • Ω.
2. It has not been confirmed whether the operation is normal in circuits other than the above example
of connection. In addition, the example of connection shown above and the constants do not
guarantee proper operation. Perform thorough evaluation using an actual application to set the
constant.
Remark Refer to the application note for constants of each external component.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
26
3. 8-series cell (cascade connection with overcurrent protection function)
R
ATL
EB+
EB−
1 COP
2 VMP
3DOP
4 VINI
5 CDT
6 CCT
7 CIT
8 SEL
VC3 11
VC4 10
VSS 9
VC2 12
VC1 13
VDD 14
CTLD 15
CTLC 16
R
VINI1
R
SEL1
R
VDD1
R
VC4
R
VC3
R
VC2
R
VC1
1 COP
2 VMP
3 DOP
4 VINI
5 CDT
6 CCT
7 CIT
8 SEL
VC3 11
VC4 10
VSS 9
VC2 12
VC1 13
VDD 14
CTLD 15
CTLC 16
R
SEL2
C
CDT2
C
CCT2
C
VC3
C
VDD1
C
VC5
C
VC6
C
VC7
C
VC8
R
VC8
R
VC7
R
VC6
R
VC5
R
VDD2
C
VDD2
R
CTLC
R
CTLD
C
CDT1
C
CCT1
R
CIT1
R
IFC
R
IFD
D
COP
R
COP
Charge FET
C
VC1
C
VC2
C
VC4
Discharge FET
R
DOP
R
VINI2
M1
M2
M4
R
INV2
M3
R
1
R
INV1
R
EB−
C
CIT2
R
SENSE
S-8204B
(1)
S-8204B
(2)
R
2
Z
D1
Figure 13
Caution 1. It is recommended that filter constants between the VDD pin and the VSS pin should be set to
approximately 47 μF • Ω.
e.g., CVDD × RVDD = 1.0 μF × 47 Ω = 47 μF • Ω
Sufficient evaluation of transient power supply fluctuation and overcurrent protection function with
the actual application is needed to determine the proper constants. Contact our sales office in case
the constants should be set to other than 47 μF • Ω.
2. It has not been confirmed whether the operation is normal in circuits other than the above example
of connection. In addition, the example of connection shown above and the constants do not
guarantee proper operation. Perform thorough evaluation using an actual application to set the
constant.
Remark Refer to the application note for constants of each external component.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 27
Precautions
• The application conditions for the input voltage, output voltage, and load current should not exceed the package
power dissipation.
• Batteries can be connected in any order; however, there may be cases when discharging cannot be performed when
a battery is connected. In such a case, short the VMP pin and the VDD pin to return the IC to the normal mode.
• If both an overcharge battery and an overdischarge battery are included among the whole batteries, the condition is
set in overcharge status and overdischarge status. Therefore either charging or discharging is impossible.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including
this IC of patents owned by a third party.
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
28
Characteristics (Typical Data)
1. Current consumption
1. 1 IOPE vs. VDS 1. 2 IOPE vs. Ta
01520
I
OPE
[μA]
30
20
10
0
V
DS
[V]
40
522
25
15
5
35
10
−40 0 25 50 75
IOPE [μA]
30
20
10
0
Ta [°C]
40
−25 85
5
15
25
35
1. 3 IPDN vs. VDS 1. 4 IPDN vs. Ta
01520
IPDN [μA]
0.06
0.04
0.02
0
VDS [V]
0.10
522
0.05
0.03
0.01
0.07
10
0.08
0.09
−40 0 25 50 75
I
PDN
[μA]
0.06
0.04
0.02
0
Ta [°C]
0.10
−25 85
0.01
0.03
0.05
0.09
0.07
0.08
2. Overcharge detection / release voltage, overdischarge detection / release voltage, overcurrent
detection voltage
2. 1 VCU vs. Ta 2. 2 VCL vs. Ta
−40 0 25 50 75
VCU [V]
4.355
4.345
4.335
4.325
Ta [°C]
4.375
−25 85
4.330
4.340
4.350
4.370
4.360
4.365
−40 0 25 50 75
V
CL
[V]
4.16
4.14
4.12
4.10
Ta [°C]
4.20
−25 85
4.18
2. 3 VDU vs. Ta 2. 4 VDL vs. Ta
−40 0 25 50 75
V
DU
[V]
2.72
2.68
2.64
2.60
Ta [°C]
2.80
−25 85
2.62
2.66
2.70
2.78
2.74
2.76
−40 0 25 50 75
VDL [V]
2.04
2.00
1.96
1.92
Ta [°C]
2.08
−25 85
1.94
1.98
2.02
2.06
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 29
2. 5 VDIOV1 vs. VDS 2. 6 VDIOV1 vs. Ta
10 12 13 14 15
V
DIOV1
[V]
0.27
0.25
0.23
0.21
V
DS
[V]
0.29
11 16
0.22
0.24
0.26
0.28
−40 0 25 50 75
VDIOV1 [V]
0.27
0.25
0.23
0.21
Ta [°C]
0.29
−25 85
0.22
0.24
0.26
0.28
2. 7 VDIOV2 vs. VDS 2. 8 VDIOV2 vs. Ta
10 12 13 14 15
VDIOV2 [V]
0.54
0.50
0.46
0.42
VDS [V]
0.58
11 16
0.44
0.48
0.52
0.56
−40 0 25 50 75
V
DIOV2
[V]
0.54
0.50
0.46
0.42
Ta [°C]
0.58
−25 85
0.44
0.48
0.52
0.56
2. 9 VSHORT vs. VDS 2. 10 VSHORT vs. Ta
10 12 13 14 15
V
SHORT
[V]
1.0
0.7
V
DS
[V]
1.3
11 16
0.8
0.9
1.1
1.2
−40 0 25 50 75
VSHORT [V]
1.0
0.7
Ta [°C]
1.3
−25 85
0.8
0.9
1.1
1.2
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204B Series Rev.3.6_00
Seiko Instruments Inc.
30
3. CCT pin internal resistance / detection voltage, CDT pin internal resistance / detection voltage, CIT
pin internal resistance / detection voltage and load short-circuit detection delay time
3. 1 RINC vs. Ta 3. 2 VCCT vs. Ta (VDS = 15.2 V)
−40 0 25 50 75
RINC [M
Ω
]
9.0
6.0
Ta [°C]
12.0
−25 85
7.0
8.0
10.0
11.0
−40 0 25 50 75
V
CCT
[V]
10.7
10.4
Ta [°C]
10.9
−25 85
10.5
10.6
10.8
3. 3 RIND vs. Ta 3. 4 VCDT vs. Ta (VDS = 12.0 V)
−40 0 25 50 75
R
IND
[k
Ω
]
900
600
Ta [°C]
1200
−25 85
700
800
1000
1100
−40 0 25 50 75
VCDT [V]
8.2
Ta [°C]
8.6
−25 85
8.3
8.4
8.5
3. 5 RINI1 vs. Ta 3. 6 VCIT vs. Ta (VDS = 14.0 V)
−40 0 25 50 75
RINI1 [k
Ω
]
180
120
Ta [°C]
240
−25 85
140
160
200
220
−40 0 25 50 75
V
CIT
[V]
9.6
Ta [°C]
10.0
−25 85
9.7
9.8
9.9
3. 7 RINI2 vs. Ta 3. 8 tSHORT vs. Ta
−40 0 25 50 75
RINI2 [k
Ω
]
18.0
12.0
Ta [°C]
24.0
−25 85
14.0
16.0
20.0
22.0
−40 0 25 50 75
t
SHORT
[μs]
300
0
Ta [°C]
600
−25 85
100
200
400
500
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
Rev.3.6_00 S-8204B Series
Seiko Instruments Inc. 31
4. COP pin / DOP pin
4. 1 ICOH vs. VCOP 4. 2 ICOL vs. VCOP
0 3.5 7 14
I
COH
[mA]
10
0
V
COP
[V]
20
10.5
15
5
25
0 5 10 20
I
COL
[μA]
0.07
0.05
0.03
0.00
V
COP
[V]
0.09
15
0.08
0.06
0.04
22
0.10
0.01
0.02
4. 3 IDOH vs. VDOP 4. 4 IDOL vs. VDOP
0 3.5 7 14
IDOH [mA]
10
0
VDOP [V]
20
10.5
15
5
25
0 1.8 3.6 7.2
I
DOL
[mA]
V
DOP
[V]
5.4
3.5
2.5
1.5
0
4.5
4.0
3.0
2.0
5.0
0.5
1.0
0.17±0.05
9
18
16
5.1±0.2
0.22±0.08
0.65
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
No. FT016-A-P-SD-1.1
FT016-A-P-SD-1.1
TSSOP16-A-PKG Dimensions
4.0±0.1
2.0±0.1
ø1.5+0.1
-0
ø1.6±0.1
8.0±0.1
4.2±0.2
6.5 +0.4
-0.2
0.3±0.05
1.5±0.1
(7.2)
No.
TITLE
SCALE
UNIT mm
8
1
9
16
Seiko Instruments Inc.
No. FT016-A-C-SD-1.1
FT016-A-C-SD-1.1
TSSOP16-A-Carrier Tape
Feed direction
No.
TITLE
SCALE
UNIT mm
17.4±1.0
Seiko Instruments Inc.
No. FT016-A-R-SD-2.0
FT016-A-R-SD-2.0
TSSOP16-A- Reel
QTY. 2,000
Enlarged drawing in the central part
2±0.5
ø13±0.2
ø21±0.8
21.4±1.0
17.4 +2.0
-1.5
No.
TITLE
SCALE
UNIT mm
17.4±1.0
Seiko Instruments Inc.
No. FT016-A-R-S1-1.0
FT016-A-R-S1-1.0
TSSOP16-A- Reel
QTY. 4,000
Enlarged drawing in the central part
2±0.5
ø13±0.2
ø21±0.8
21.4±1.0
17.4 +2.0
-1.5
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
• When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the appropriate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Seiko Instruments Inc. is strictly prohibited.
• The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, vehicle equipment,
in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment, without prior
written permission of Seiko Instruments Inc.
• The products described herein are not designed to be radiation-proof.
• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.
