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Seiko Instruments Electronic Components Datasheet

S-8209B Datasheet

Battery Protection IC

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S-8209B Series
www.sii-ic.com
© Seiko Instruments Inc., 2008-2015
BATTERY PROTECTION IC
WITH CELL-BALANCE FUNCTION
Rev.3.4_00
The S-8209B Series is a protection IC for lithium-ion / lithium polymer rechargeable batteries and includes a high-accuracy
voltage detection circuit and a delay circuit.
The S-8209B Series has a transmission function and two types of cell-balance function so that users are also able to configure
a protection circuit with series multi-cell.
Features
High-accuracy voltage detection circuit
Overcharge detection voltage*1
Overcharge release voltage*1
Cell-balance detection voltage*1
Cell-balance release voltage*1
3.55 V to 4.40 V (5 mV step)
3.50 V to 4.40 V*2
3.55 V to 4.40 V (5 mV step)*3
3.50 V to 4.40 V*4
Overdischarge detection voltage
Overdischarge release voltage
2.0 V to 3.0 V (10 mV step)
2.0 V to 3.4 V*5
Settable delay time by external capacitor for output pin
Control charging, discharging, cell-balance by CTLC pin, CTLD pin
Two types of cell-balance function; charge / discharge*6
Wide range of operation temperature
Ta = 40°C to +85°C
Low current consumption
Lead-free, Sn 100%, halogen-free*7
7.0 μA max.
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±50 mV
Accuracy ±100 mV
*1. Regarding selection of overcharge detection voltage, overcharge release voltage, cell-balance detection voltage
and cell-balance release voltage, refer to Remark 3 in "3. Product name list" of "Product Name Structure".
*2. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage
(Overcharge hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.)
*3. Select as to overcharge detection voltage > cell-balance detection voltage.
*4. Cell-balance release voltage = Cell-balance detection voltage Cell-balance hysteresis voltage
(Cell-balance hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.)
*5. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage is selectable in 0 V to 0.7 V in 100 mV step.)
*6. Also available the product without discharge cell-balance function
*7. Refer to "Product Name Structure" for details.
Applications
Lithium-ion rechargeable battery pack
Lithium polymer rechargeable battery pack
Packages
SNT-8A
8-Pin TSSOP
Seiko Instruments Inc.
1


Seiko Instruments Electronic Components Datasheet

S-8209B Datasheet

Battery Protection IC

No Preview Available !

BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION
S-8209B Series
Block Diagram
Rev.3.4_00
Delay circuit
DO
CO
CB
CTLD
CTLC
400 nA
400 nA
+
Overcharge
detection
comparator
+
Cell-balance
detection
comparator
+
Overdischarge
detection
comparator
Remark The diodes in the IC are parasitic diodes.
Figure 1
8.31 MΩ
CDT
VDD
VSS
2 Seiko Instruments Inc.


Part Number S-8209B
Description Battery Protection IC
Maker Seiko Instruments
PDF Download

S-8209B Datasheet PDF






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