S-82N1B Series BATTERY PROTECTION IC WITH POWER-SAVING FUNCTION www.ablic.com FOR 1-CELL PACK ABLIC Inc., 2021 Rev.1.1 00 The S-82N1B Series is a protection IC for lithium-ion / lithium polymer rechargeable batteries, which includes high-accuracy voltage detection circuits and delay circuits. It is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge, and overcurrent. The S-82N1B Series has an input pin for power-saving signal (PS pin), allowing for reduction of current consumption by using an external signal to start the power-saving function. Features High-accuracy voltage detection circuit Overcharge detection voltage 3.500 V to 4.600 V (5 mV step) Accuracy 15 mV *1 Overcharge release voltage 3.100 V to 4.600 V Accuracy 50 mV Overdischarge detection voltage 2.000 V to 3.000 V (10 mV step) Accuracy 50 mV *2 Overdischarge release voltage 2.000 V to 3.400 V Accuracy 100 mV Discharge overcurrent detection voltage 0.003 V to 0.100 V (1 mV step) Accuracy 3 mV Load short-circuiting detection voltage 0.010 V to 0.200 V (1 mV step) Accuracy 7 mV Charge overcurrent detection voltage 0.100 V to 0.003 V (1 mV step) Accuracy 3 mV Detection delay times are generated only by an internal circuit (external capacitors are unnecessary). Power-saving function PS pin control logic: Active, active PS pin internal resistance connection: Pull-up, pull-down PS pin internal resistance value: 1.0 M, 2.0 M, 3.0 M, 4.0 M, 5.0 M Discharge overcurrent control function Release condition of discharge overcurrent status: Load disconnection, charger connection Release voltage of discharge overcurrent status: Discharge overcurrent detection voltage (V ), DIOV Discharge overcurrent release voltage (V ) = V 0.8 (typ.) RIOV DD 0 V battery charge: Enabled, inhibited Power-down function High-withstand voltage: VM pin and CO pin: Absolute maximum rating 28 V Wide operation temperature range: Ta = 40C to +85C Low current consumption During operation: 600 nA typ., 990 nA max. (Ta = +25C) During power-down: 50 nA max. (Ta = +25C) During power-saving: 50 nA max. (Ta = +25C) Lead-free (Sn 100%), halogen-free *1. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage (Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV step.) *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.) Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Package SNT-6A 1 BATTERY PROTECTION IC WITH POWER-SAVING FUNCTION FOR 1-CELL PACK S-82N1B Series Rev.1.1 00 Block Diagram VDD Overdischarge detection comparator DO Overcharge detection comparator VSS Discharge overcurrent Control logic detection comparator Delay circuit Oscillator Load short-circuiting detection comparator Charge overcurrent detection comparator CO R R VMD VMD2 VM Pull-up / pull-down PS selection circuit Figure 1 2