S-8254A Просмотр технического описания (PDF) - Unspecified
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S-8254A Datasheet PDF : 29 Pages
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S-8254A Series
www.ablicinc.com
© ABLIC Inc., 2002-2016
BATTERY PROTECTION IC
FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
Rev.5.2_01
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)
Overcharge release voltage n (n 1 to 4)
3.9 V to 4.4 V (50 mV step)
3.8 V to 4.4 V*1
Accuracy 25 mV
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
(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
Overcurrent detection voltage 3
VVC1 1.2 V
Accuracy 300 mV
(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
Absolute maximum rating : 26 V
(7) Wide operating voltage range
2 V to 24 V
(8) Wide operating temperature range 40C to 85C
(9) Low current consumption
During operation
30 A max. (25C)
During power-down 0.1 A max. (25C)
(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
1
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