S-8269B Series OVERCURRENT MONITORING IC www.ablic.com FOR MULTI-SERIAL-CELL PACK ABLIC Inc., 2018-2020 Rev.1.3 00 The S-8269B Series is an overcurrent monitoring IC for multi-serial-cell pack including high-accuracy voltage detection circuits and delay circuits. By using an external overcurrent detection resistor, the S-8269B Series realizes high-accuracy overcurrent protection with less effect from temperature change. Features High-accuracy voltage detection circuit Discharge overcurrent detection voltage 1 0.0030 V to 0.1000 V (0.5 mV step) Accuracy 1.5 mV Discharge overcurrent detection voltage 2 0.010 V to 0.100 V (1 mV step) Accuracy 3 mV Load short-circuiting detection voltage 0.020 V to 0.100 V (1 mV step) Accuracy 5 mV Charge overcurrent detection voltage 0.1000 V to 0.0030 V (0.5 mV step) Accuracy 1.5 mV Detection delay times are generated only by an internal circuit (external capacitors are unnecessary) Discharge overcurrent control function Release condition of discharge overcurrent status: Load disconnection Release voltage of discharge overcurrent status: V , VRIOV = V 0.8 (typ.) DIOV1 DD High-withstand voltage: VM pin and CO pin: Absolute maximum rating 28 V Low current consumption During operation: 2.0 A typ., 4.0 A max. (Ta = +25C) Wide operation temperature range: Ta = 40C to +85C Lead-free (Sn 100%), halogen-free Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Package SNT-6A 1 OVERCURRENT MONITORING IC FOR MULTI-SERIAL-CELL PACK S-8269B Series Rev.1.3 00 Block Diagram VDD DO Discharge overcurrent detection 1 comparator VSS Control logic Discharge overcurrent Delay circuit detection 2 comparator Oscillator Load short-circuiting detection comparator Charge overcurrent detection comparator VINI CO VM Figure 1 2