S-8211E Series
www.sii-ic.com
© Seiko Instruments Inc., 2009-2013
BATTERY PROTECTION IC
FOR 1-CELL PACK
Rev.2.3
_00
The S-8211E Series has high-accuracy voltage detections circuit and delay circuits.
The S-8211E Series is suitable for monitoring overcharge and overdischarge of 1-cell lithium ion / lithium polymer
rechargeable battery pack.
Features
(1) High-accuracy voltage detection circuit
•
Overcharge detection voltage
3.6 V to 4.5 V (5 mV step)
Accuracy
±25
mV (+25°C)
Accuracy
±30
mV (−5°C to
+55°C)
Accuracy
±50
mV
Accuracy
±50
mV
Accuracy
±100
mV
(2)
(3)
(4)
(5)
(6)
•
Overcharge release voltage
3.5 V to 4.4 V
*1
•
Overdischarge detection voltage
2.0 V to 3.0 V (10 mV step)
*2
•
Overdischarge release voltage
2.0 V to 3.4 V
Detection delay times are generated by an internal circuit
(external capacitors are unnecessary)
Accuracy
±20%
Wide operating temperature range
−40°C
to
+85°C
Low current consumption
•
During operation
3.0
μ
A typ., 5.5
μ
A max. (+25°C)
•
During overdischarge
2.0
μ
A typ., 3.5
μ
A max. (+25°C)
Output logic of CO pin is selectable.
Active “H”, Active “L”
*3
Lead-free, Sn 100%, halogen-free
*1.
Overcharge release voltage = Overcharge detection voltage
−
Overcharge hysteresis voltage
(Overcharge hysteresis voltage 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 can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.)
*3.
Refer to “
Product Name Structure”
for details.
Applications
•
Lithium-ion rechargeable battery pack
•
Lithium-polymer rechargeable battery pack
Packages
•
SOT-23-5
•
SNT-6A
Seiko Instruments Inc.
1
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
Rev.2.3
_00
Block Diagram
VDD
Output control circuit
DO
Divider control
circuit
Oscillator control
circuit
Overcharge
detection
comparator
＋
－
CO
＋
－
Overdischarge
detection
comparator
VSS
VM
Remark
All diodes shown in figure are parasitic diodes.
Figure 1
2
Seiko Instruments Inc.
Rev.2.3
_00
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
Product Name Structure
1. Product Name
1. 1 SOT-23-5
S-8211E
xx
−
M5T1
U
Environmental code
U : Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specifications
*1
M5T1 :SOT-23-5, Tape
Serial code
*2
Sequentially set from AA to ZZ
*1.
Refer to the tape specifications.
*2.
Refer to the “3.
Product Name List”.
1. 2 SNT-6A
S-8211E
xx
−
I6T1
x
Environmental code
U : Lead-free (Sn 100%), halogen-free
G : Lead-free (for details, please contact our sales office)
Package name (abbreviation) and IC packing specifications
*1
I6T1 : SNT-6A, Tape
Serial code
*2
Sequentially set from AA to ZZ
*1.
Refer to the tape specifications.
*2.
Refer to the “3.
Product Name List”.
2. Packages
Drawing Code
Package
MP005-A-P-SD
PG006-A-P-SD
Tape
MP005-A-C-SD
PG006-A-C-SD
Reel
MP005-A-R-SD
PG006-A-R-SD
Land
−
PG006-A-L-SD
Package Name
SOT-23-5
SNT-6A
Seiko Instruments Inc.
3
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
Rev.2.3
_00
3. Product Name List
3. 1 SOT-23-5
Table 1
Overcharge
Detection
Voltage
[V
CU
]
3.600 V
3.650 V
3.800 V
4.180 V
3.600 V
Overcharge
Release
Voltage
[V
CL
]
3.600 V
3.550 V
3.600 V
4.180 V
3.600 V
Overdischarge
Detection
Voltage
[V
DL
]
2.00 V
2.00 V
2.00 V
2.50 V
2.00 V
Overdischarge
Release
Voltage
[V
DU
]
2.00 V
2.30 V
2.30 V
3.00 V
2.30 V
Delay Time
Combination
*1
(1)
(2)
(2)
(1)
(1)
CO Pin
Output Form
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
CMOS output active “H”
CMOS output active “H”
Product Name
S-8211EAC-M5T1U
S-8211EAF-M5T1U
S-8211EAG-M5T1U
S-8211EAJ-M5T1U
S-8211EAK-M5T1U
*1.
Refer to the
Table 3
about the details of the delay time combinations (1), (2).
Remark
Please contact our sales office for the products with detection voltage value other than those specified above.
3. 2 SNT-6A
Table 2
Overcharge
Detection
Voltage
[V
CU
]
4.220 V
4.270 V
4.220 V
4.220 V
4.000 V
3.800 V
4.280 V
Overcharge
Release
Voltage
[V
CL
]
4.220 V
4.270 V
4.220 V
4.220 V
3.800 V
3.700 V
4.080 V
Overdischarge
Detection
Voltage
[V
DL
]
2.00 V
2.00 V
2.50 V
2.30 V
3.00 V
2.30 V
2.50 V
Overdischarge
Release
Voltage
[V
DU
]
2.00 V
2.00 V
2.50 V
2.30 V
3.20 V
2.40 V
2.50 V
Delay Time
Combination
*1
(2)
(2)
(2)
(2)
(1)
(1)
(1)
CO Pin
Output Form
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
CMOS output active “L”
Product Name
S-8211EAA-I6T1x
S-8211EAB-I6T1x
S-8211EAD-I6T1x
S-8211EAE-I6T1x
S-8211EAH-I6T1U
S-8211EAI-I6T1U
S-8211EAP-I6T1U
*1.
Refer to the
Table 3
about the details of the delay time combinations (1), (2).
Remark 1.
Please contact our sales office for the products with detection voltage value other than those specified above.
2.
x: G or U
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
Table 3
Delay Time
Combination
(1)
(2)
Remark
Overcharge Detection Delay Time
[t
CU
]
1.2 s
573 ms
Overdischarge Detection Delay Time
[t
DL
]
150 ms
300 ms
The delay times can be changed within the range listed
Table 4.
For details, please contact our sales office.
Table 4
Delay Time
Overcharge detection delay time
Overdischarge detection delay time
Remark
Symbol
t
CU
t
DL
Selection Range
143 ms
38 ms
573 ms
150 ms
1.2 s
300 ms
Remark
Select a value from the left.
Select a value from the left.
The value surrounded by bold lines is the delay time of the standard products.
4
Seiko Instruments Inc.
Rev.2.3
_00
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
Pin Configurations
1.
SOT-23-5
SOT-23-5
Top view
5
4
Table 5
Pin No.
1
2
3
4
5
Symbol
VM
VDD
VSS
DO
CO
Description
Negative power supply input pin for CO pin
Input pin for positive power supply
Input pin for negative power supply
Output pin for overdischarge detection
(CMOS output)
Output pin for overcharge detection
(CMOS output)
1
2
Figure 2
3
2.
SNT-6A
SNT-6A
Top view
1
2
3
6
5
4
Table 6
No connection
Output pin for overcharge detection
2
CO
(CMOS output)
Output pin for overdischarge detection
3
DO
(CMOS output)
4
VSS
Input pin for negative power supply
5
VDD
Input pin for positive power supply
6
VM
Negative power supply input pin for CO pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VDD pin or VSS pin.
Pin No.
1
Symbol
NC
*1
Description
Figure 3
Seiko Instruments Inc.
5
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