S-8239A Series OVERCURRENT MONITORING IC www.ablic.com FOR MULTI-SERIAL-CELL PACK ABLIC Inc., 2013-2020 Rev.1.6 00 The S-8239A Series is an overcurrent monitoring IC for multi-serial-cell pack including high-accuracy voltage detection circuits and delay circuits. The S-8239A Series is suitable for protection of lithium-ion / lithium polymer rechargeable battery packs from overcurrent. Features Built-in high-accuracy voltage detection circuit *1 Overcurrent 1 detection voltage 0.04 V to 0.30 V (10 mV step) Accuracy 15 mV Overcurrent 2 detection voltage 0.1 V to 0.7 V (100 mV step) Accuracy 100 mV Overcurrent 3 detection voltage 1.2 V (Fixed) Accuracy 300 mV Built-in three-step overcurrent detection circuit: Overcurrent 1, overcurrent 2, overcurrent 3 Overcurrent 3 detection function: Available, unavailable UVLO (under voltage lock out) function UVLO detection voltage 2.0 V (Fixed) Accuracy 100 mV High-withstand voltage: VM pin, DO pin: Absolute maximum rating 28 V Delay times are generated only by an internal circuit (External capacitors are unnecessary). Low current consumption During normal operation: 7.0 A max. During UVLO operation: 6.0 A max. Output logic: Active, Active Wide operation temperature range: Ta = 40C to +85C Lead-free (Sn 100%), halogen-free *1. Overcurrent 1 detection voltage 0.06 V should be satisfied in the case of overcurrent 2 detection voltage = 0.1 V. Overcurrent 1 detection voltage 0.85 overcurrent 2 detection voltage 0.05 V should be satisfied in the case of overcurrent 2 detection voltage 0.2 V. Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Package SOT-23-6 1 OVERCURRENT MONITORING IC FOR MULTI-SERIAL-CELL PACK S-8239A Series Rev.1.6 00 Block Diagram DP DO VDD + Delay circuit output control circuit UVLO detection comparator + VM Overcurrent latch R VMS comparator + Overcurrent 1 detection comparator VINI + Overcurrent 2 detection comparator + Overcurrent 3 VSS detection comparator Remark All the diodes shown in the figure are parasitic diodes. Figure 1 2