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S-8254AAKFT-TB

Description
BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
File Size374KB,30 Pages
ManufacturerSII
Websitehttp://www.sii.co.jp/
Download Datasheet View All

S-8254AAKFT-TB Overview

BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK

S-8254A Series
BATTERY PROTECTION IC
FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
Rev.5.1
_00
www.sii-ic.com
© Seiko Instruments Inc., 2002-2014
The S-8254A Series is a protection IC for 3-serial- or 4-serial-cell lithium-ion / lithium polymer rechargeable
batteries and includes a high-accuracy voltage detector and delay circuit.
The S-8254A Series protects both 3-serial or 4-serial cells using the SEL pin for switching.
Features
(1) High-accuracy voltage detection for each cell
Overcharge detection voltage n (n
=
1 to 4)
3.9 V to 4.4 V (50 mV step)
Accuracy
±25
mV
*1
Accuracy
±50
mV
Overcharge release voltage n (n
=
1 to 4)
3.8 V to 4.4 V
Overdischarge detection voltage n (n
=
1 to 4) 2.0 V to 3.0 V (100 mV step)
Accuracy
±80
mV
*2
Accuracy
±100
mV
Overdischarge release voltage n (n
=
1 to 4)
2.0 V to 3.4 V
(2) Three-level overcurrent protection
Overcurrent detection voltage 1
0.05 V to 0.30 V (50 mV step) Accuracy
±25
mV
Overcurrent detection voltage 2
0.5 V
Accuracy
±100
mV
Accuracy
±300
mV
Overcurrent detection voltage 3
V
VC1
1.2 V
(3) Delay times for overcharge detection, overdischarge detection and overcurrent detection 1 can be set
by external capacitors (delay times for overcurrent detection 2 and 3 are fixed internally).
(4) Switchable between a 3-serial cell and 4-serial cell using the SEL pin
(5) Charge/discharge operation can be controlled via the control pins.
(6) High-withstand voltage device
Absolute maximum rating : 26 V
(7) Wide operating voltage range
2 V to 24 V
(8) Wide operating temperature range
−40°C
to
+
85°C
(9) Low current consumption
During operation
30
μA
max. (+25°C)
During power-down 0.1
μA
max. (+25°C)
(10) Lead-free, Sn100%, halogen-free
*3
*1.
Overcharge hysteresis voltage n (n
=
1 to 4) can be selected as 0 V or from a range of 0.1 V to 0.4 V in
50 mV steps.
(Overcharge hysteresis voltage
=
Overcharge detection voltage
Overcharge release voltage)
*2.
Overdischarge hysteresis voltage n (n
=
1 to 4) can be selected as 0 V or from a range of 0.2 V to 0.7 V
in 100 mV steps.
(Overdischarge hysteresis voltage
=
Overdischarge release voltage
Overdischarge detection voltage)
*3.
Refer to “
Product Name Structure”
for details.
Applications
Lithium-ion rechargeable battery packs
Lithium polymer rechargeable battery packs
Package
16-Pin TSSOP
Seiko Instruments Inc.
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