S-8242

Rev.1.0_00 BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK S-8242 Series The S-8242 Series are protection ICs for 2-serial-cell lithium-ion/lithium-polymer rechargeable batteries and include high-accuracy voltage detectors and delay circuits. These ICs are suitable for protecting 2-cell rechargeable lithium-ion/lithium-polymer battery packs from overcharge, overdischarge, and overcurrent. „Features (1) High-accuracy voltage detection for each cell Overcharge detection voltage n (n = 1, 2) Overcharge release voltage n (n = 1, 2) 3.9 V to 4.4 V (50 mV steps) 3.8 V to 4.4 V *1 Accuracy ±25 mV Accuracy ±50 mV *1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV steps.) Overdischarge detection voltage n (n = 1, 2) Overdischarge release voltage n (n = 1, 2) 2.0 V to 3.0 V (100 mV steps) 2.0 V to 3.4 V *2 Accuracy ±50 mV Accuracy ±100 mV *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV steps.) Two-level overcurrent detection (overcurrent 1, overcurrent 2) (3) (4) (5) Overcurrent detection voltage 1 0.05 V to 0.30 V (50 mV steps) Accuracy ±15 mV Overcurrent detection voltage 2 1.2 V (fixed) Accuracy ±300 mV Delay times (overcharge, overdischarge, overcu...