S-8253B

Rev.2.1_00 BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series The S-8253A/B Series are protection ICs for 2-serial or 3-serial cell lithium-ion rechargeable batteries and include high-accuracy voltage detectors and delay circuits. These ICs are suitable for protecting lithium-ion battery packs from overcharge, overdischarge and overcurrent. Features (1) High-accuracy voltage detection for each cell Overcharge detection voltage n (n = 1 to 3) 3.9 V to 4.4 V (50 mV steps) Accuracy ±25 mV *1 Accuracy ±50 mV Overcharge release voltage n (n = 1 to 3) 3.8 V to 4.4 V *1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage n (n = 1 to 3) 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 to 3) 2.0 V to 3.0 V (100 mV steps) *2 Accuracy ±80 mV Overdischarge release voltage n (n = 1 to 3) 2.0 V to 3.4 V Accuracy ±100 mV *2. Overdischarge release voltage = Overdischarge release voltage − Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.2 V to 0.7 V in 100 mV steps.) www.DataSheet4U.com (2) Three-level overcurrent detection (including load short circuiting detection) Overcurrent detection voltage 1 0.05 V to 0.30 V (50 mV steps) Accuracy ±25 mV Overcurrent detection voltage 2 0.5 V (fixed) Overcurrent detection voltage 3 1.2 V (fixed) De...