S8254

Rev.2.3_00 BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL-CELL PACK S-8254 Series The S-8254 series is a protection IC for 3-serial or 4-serial cell lithium ion rechargeable batteries and includes a high-accuracy voltage detector and delay circuit. The S-8254 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 steps) Accuracy ±25 mV *1 Accuracy ±50 mV Overcharge release voltage n (n = 1 to 4) 3.8 V to 4.4 V *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) www.DataSheet4U.com Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV steps) *2 Accuracy ±80 mV Overdischarge release voltage n (n = 1 to 4) 2.0 V to 3.4 V Accuracy ±100 mV *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) (2) Three-level overcurrent protection Overcurrent detection voltage 1 0.05 V to 0.3 V (50 mV steps) Accuracy ±25 mV Overcurrent detection voltage 2 0.5 V Accuracy ±100 mV Overcurrent detection voltage 3 VC1 − 1.2 V Accuracy ±300 mV Delay times for overcharge detection, overdi...