S-8241
Description
Rev.
4.
1_01
BATTERY PROTECTION IC FOR 1- CELL PACK
S-8241 Series
The S-8241 Series is a series of lithium-ion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy voltage detection circuits and delay circuits.
These ICs are suitable for protection of single-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent.
www.
DataSheet4U.
com Features
(1)
Internal high-accuracy voltage detection circuit • Overcharge detection voltage: 3.
9 V to 4.
4 V (5 mV-step) Accuracy of ± 25 mV(+25°C) and ± 30 mV(−5°C to +55°C) • Overcharge release voltage 3.
8 V to 4.
4 V *1 Accuracy of ±50 mV
*1.
Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis The overcharge hysteresis can be selected in the range 0.
0, or 0.
1 to 0.
4 V in 50mV steps.
(However, selection "Overcharge release voltage<3.
8 V" is enabled.
)
• Overdischarge detection voltage: • Overdischarge release voltage:
2.
0 V to 3.
0 V (100 mV-step) Accuracy of ±80 mV 2.
0 V to 3.
4 V *2 Accuracy of ±100 mV
• Overcurrent 1 detection voltage: 0.
05 V to 0.
3 V (5 mV-step) Accuracy of ±20 mV • Overcurrent 2 detection voltage: 0.
5 V (fixed) Accuracy of ±100 mV (2) A high voltage withstand device is used for charger connection pins (VM and CO pins: Absolute maximum rating = 26 V) (3) Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1; overcurrent 2: tlOV2) are generated by an internal circuit.
(External capacitors are unnecessary.
) Accuracy of ±30 % (4) Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting) (5) Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected.
(6) Products with and without a power-down function can be selected.
(7) Charger detection function and abnormal charge current detection function • The overdischarge hysterisis is released by detecting a negative VM pin voltage (typ.
-1.
3 V).
(Charger detection functi...
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