Rev.3.1
_00
BATTERY PROTECTION IC
FOR 2-SERIAL-CELL PACK
S-8242A Series
Features
(1)
•
Lithium-ion rechargeable battery packs
•
Lithium polymer rechargeable battery packs
Packages
Package Name
SOT-23-6W
6-Pin SNB(B)
Package
MP006-B
BD006-A
Drawing Code
Tape
MP006-B
BD006-A
Reel
MP006-B
BD006-A
DI
Applications
SC
High-accuracy voltage detection for each cell
•
Overcharge detection voltage n (n
=
1, 2)
3.9 V to 4.4 V (50 mV step)
Accuracy
±25
mV
*1
•
Overcharge release voltage n (n
=
1, 2)
3.8 V to 4.4 V
Accuracy
±50
mV
•
Overdischarge detection voltage n (n
=
1, 2)
2.0 V to 3.0 V (100 mV step)
Accuracy
±50
mV
*2
Accuracy
±100
mV
•
Overdischarge release voltage n (n
=
1, 2)
2.0 V to 3.4 V
*1.
Overcharge release voltage
=
Overcharge detection voltage
−
Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n
=
1, 2) can be selected as 0 V or from a range of 0.1 V to
0.4 V in 50 mV step.)
*2.
Overdischarge release voltage
=
Overdischarge detection voltage
+
Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage n (n
=
1, 2) can be selected as 0 V or from a range of 0.1 V to
0.7 V in 100 mV step.)
(2) Two-level overcurrent detection (overcurrent 1, overcurrent 2)
•
Overcurrent detection voltage 1
0.05 V, 0.08 V to 0.30 V (10 mV step)
Accuracy
±15
mV
•
Overcurrent detection voltage 2
1.2 V (fixed)
Accuracy
±300
mV
(3) Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external capacitors are
unnecessary).
(4) 0 V battery charge function available/unavailable are selectable.
(5) Charger detection function
•
The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.7 V typ.) (Charger
detection function).
(6) High-withstanding-voltage devices
Absolute maximum rating: 28 V
(7) Wide operating temperature range
−40°C
to
+85 °C
(8) Low current consumption
Operation mode
10
µA
max. (+25°C)
Power-down mode
0.1
µA
max. (+25°C)
(9) Small package
SOT-23-6W, 6-Pin SNB(B)
(10) Lead-free product
ON
TI
NU
Seiko Instruments Inc.
ED
PR
OD
UC
T
The S-8242A Series are protection ICs for 2-serial-cell
lithium-ion/lithium polymer rechargeable batteries and
include high-accuracy voltage detectors and delay circuits.
These ICs are suitable for protecting 2-cell rechargeable
lithium-ion / lithium polymer battery packs from overcharge,
overdischarge and overcurrent.
1
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8242A Series
Block Diagram
Rev.3.1
_00
DO
Delay circuit, controller, 0
V battery charge/
charge inhibition circuit
VDD
CO
OD
UC
T
−
+
+
−
−
+
+
−
+
−
+
−
VC
300 kΩ
VM
10 kΩ
ED
Charger
detector
PR
VSS
ON
Remark
All the diodes in the figure are parasitic diodes.
Figure 1
DI
2
Seiko Instruments Inc.
SC
TI
NU
Rev.3.1
_00
Product Name Structure
1. Product Name
1. 1 SOT-23-6W Package
S-8242A
xx
-
M6T2
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8242A Series
GZ
Package name (abbreviation) and IC packing specifications
*1
M6T2:
SOT-23-6W, Tape
*1.
Refer to the tape specifications.
1. 2 6-Pin SNB(B) Package
S-8242A
xx
-
B6T1
0Z
OD
UC
T
Serial code
Sequentially set from AA to ZZ
Serial code
Sequentially set from AA to ZZ
*1.
Refer to the tape specifications.
DI
SC
ON
TI
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Seiko Instruments Inc.
ED
PR
Package name (abbreviation) and IC packing specifications
B6T1:
6-Pin SNB(B), Tape
*1
3
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8242A Series
Rev.3.1
_00
2. Product Name List
(1) SOT-23-6W
Table 1
Overcharge
Detection
Voltage
(V
CU
)
4.325 V
4.350 V
4.300 V
4.300 V
4.350 V
4.350 V
4.280 V
4.300 V
4.350 V
4.350 V
4.350 V
4.350 V
4.300 V
4.250 V
4.350 V
Overcharge
Release
Voltage
(V
CL
)
4.075 V
4.150 V
4.050 V
4.100 V
4.150 V
4.150 V
4.130 V
4.100 V
4.100 V
4.100 V
4.150 V
4.100 V
4.150 V
4.100 V
4.150 V
Overdischarge
Detection
Voltage
(V
DL
)
2.2 V
2.3 V
2.0 V
2.4 V
2.4 V
2.3 V
2.4 V
2.0 V
2.3 V
2.4 V
2.3 V
2.7 V
2.8 V
3.0 V
2.4 V
Overdischarge
Release
Voltage
(V
DU
)
2.9 V
3.0 V
2.7 V
3.0 V
3.0 V
3.0 V
2.9 V
2.0 V
3.0 V
Overcurrent
Detection
Voltage 1
(V
IOV1
)
0.21 V
0.30 V
0.20 V
0.20 V
0.30 V
0.30 V
0.15 V
0.20 V
0.10 V
0.15 V
0.30 V
0.30 V
0.15 V
0.20 V
0.24 V
0 V Battery
Charge
Unavailable
Available
Available
Unavailable
Available
Unavailable
Unavailable
Available
Available
Available
Available
Available
Available
Available
Available
Product Name / Item
S-8242AAA-M6T2GZ
S-8242AAD-M6T2GZ
S-8242AAE-M6T2GZ
S-8242AAF-M6T2GZ
S-8242AAG-M6T2GZ
S-8242AAH-M6T2GZ
S-8242AAK-M6T2GZ
S-8242AAM-M6T2GZ
S-8242AAN-M6T2GZ
S-8242AAO-M6T2GZ
S-8242AAV-M6T2GZ
S-8242AAW-M6T2GZ
S-8242AAX-M6T2GZ
S-8242AAY-M6T2GZ
S-8242AAZ-M6T2GZ
Remark
Please contact our sales office for the products with detection voltage value other than those specified above.
(2) 6-Pin SNB(B)
ON
Product Name / Item
S-8242AAA-B6T10Z
S-8242AAJ-B6T10Z
S-8242AAL-B6T10Z
S-8242AAM-B6T10Z
S-8242AAP-B6T10Z
S-8242AAS-B6T10Z
S-8242AAT-B6T10Z
S-8242AAU-B6T10Z
Remark
Overcharge
Detection
Voltage
(V
CU
)
4.325 V
4.325 V
4.280 V
4.300 V
4.325 V
4.325 V
4.325 V
4.280 V
TI
NU
Overcharge
Release
Voltage
(V
CL
)
4.075 V
4.075 V
4.080 V
4.100 V
4.075 V
4.075 V
4.075 V
4.080 V
ED
Table 2
Overdischarge
Detection
Voltage
(V
DL
)
2.2 V
2.2 V
2.2 V
2.0 V
2.2 V
2.2 V
2.2 V
2.2 V
PR
OD
UC
T
3.0 V
2.3 V
3.0 V
3.0 V
3.0 V
3.0 V
Overdischarge
Release
Voltage
(V
DU
)
2.9 V
2.4 V
2.9 V
2.0 V
2.4 V
2.4 V
2.4 V
2.9 V
Overcurrent
Detection
Voltage 1
(V
IOV1
)
0.21 V
0.19 V
0.10 V
0.20 V
0.17 V
0.18 V
0.20 V
0.20 V
0 V Battery
Charge
Unavailable
Unavailable
Unavailable
Available
Unavailable
Unavailable
Unavailable
Available
Please contact our sales office for the products with detection voltage value other than those specified above.
DI
SC
4
Seiko Instruments Inc.
Rev.3.1
_00
Pin Configurations
SOT-23-6W
Top view
6
5
4
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8242A Series
Table 3
Pin No.
1
Symbol
DO
Description
1
2
3
Figure 2
6-Pin SNB(B)
Top view
PR
VM
6
5
4
Pin No.
1
Symbol
1
2
3
Bottom view
1
2
3
*1
*1.
Connect the heatsink of
backside at shadowed area
potential open or VDD.
to the board, and set electric
However, do not use it as
the function of electrode.
Figure 3
DI
SC
6
5
4
ON
Voltage detection between VM and VSS
(overcurrent/charger detection pin)
Connection of charge control FET gate
2
CO
(CMOS output)
Connection of discharge control FET gate
3
DO
(CMOS output)
Connection for negative power supply input
4
VSS
and negative voltage of battery 2
Connection for negative voltage of battery 1
5
VC
and positive voltage of battery 2
Connection for positive power supply input
6
VDD
and positive voltage of battery 1
Remark
For the external views, refer to the package drawings.
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Seiko Instruments Inc.
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Table 4
Connection of discharge control FET gate
(CMOS output)
Connection of charge control FET gate
2
CO
(CMOS output)
Voltage detection between VM and VSS
3
VM
(overcurrent/charger detection pin)
Connection for negative voltage of battery 1
4
VC
and positive voltage of battery 2
Connection for positive power supply input
5
VDD
and positive voltage of battery 1
Connection for negative power supply input
6
VSS
and negative voltage of battery 2
Remark
For the external views, refer to the package drawings.
Description
5
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