S-8252 Series BATTERY PROTECTION IC www.ablic.com FOR 2-SERIAL-CELL PACK ABLIC Inc., 2011-2019 Rev.4.0 00 The S-8252 Series is a protection IC for 2-serial-cell lithium-ion / lithium polymer rechargeable batteries and includes high- accuracy voltage detection circuits and delay circuits. The S-8252 Series is suitable for protecting 2-serial-cell rechargeable lithium-ion / lithium polymer battery packs from overcharge, overdischarge, and overcurrent. Features High-accuracy voltage detection function for each cell Overcharge detection voltage n (n = 1, 2) 3.550 V to 4.600 V (5 mV steps) Accuracy 20 mV (Ta = +25C) Accuracy 25 mV (Ta = 10C to +60C) *1 Overcharge release voltage n (n = 1, 2) 3.150 V to 4.600 V Accuracy 30 mV Overdischarge detection voltage n (n = 1, 2) 2.000 V to 3.000 V (10 mV steps) Accuracy 50 mV *2 Overdischarge release voltage n (n = 1, 2) 2.000 V to 3.400 V Accuracy 100 mV Discharge overcurrent detection voltage 0.050 V to 0.400 V (10 mV steps) Accuracy 10 mV Load short-circuiting detection voltage 0.500 V to 0.900 V (50 mV steps) Accuracy 100 mV Charge overcurrent detection voltage 0.400 V to 0.050 V (25 mV steps) Accuracy 20 mV Charge overcurrent detection function: Available, unavailable Detection delay times are generated only by an internal circuit (external capacitors are unnecessary). Accuracy 20% High-withstand voltage (VM pin and CO pin: Absolute maximum rating = 28 V) 0 V battery charge: Enabled, inhibited Power-down function: Available, unavailable Wide operation temperature range: Ta = 40C to +85C Low current consumption During operation: 8.0 A max. (Ta = +25C) During power-down: 0.1 A max. (Ta = +25C) Lead-free (Sn 100%), halogen-free *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.) *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.) Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Packages SOT-23-6 SNT-6A 1 BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK S-8252 Series Rev.4.0 00 Block Diagram Divider Oscillator control control 0 V battery charge / DO circuit circuit charge inhibition VDD circuit + + + CO VC + + + + 300 k Charger VSS detection VM circuit 20 k Remark All diodes shown in figure are parasitic diodes. Figure 1 2