Описание
The S-8243AA Series is a protection IC for lithium-ion rechargeable battery. The S-8243A Series protects 3-series, the S-8243B Series protects 4-series cell pack from the overcharge, overdischarge, overcurrent voltages. This IC has a high-accuracy battery protection circuit and a battery monitor amplifier, and also a voltage regulator which operates the microcomputer or gas gauge IC. Combining this IC and a microcomputer or a gas gauge IC allows to display the amount of charge remained in a battery.
High-accuracy voltage detection for each cell Overcharge detection voltage n (n = 1 to 4) 3.9 V to 4.4 V (50 mV step) Accuracy ±25 mV Overcharge hysteresis voltage n (n = 1 to 4) of overcharge detection -0.10 V to -0.40 V (50 mV step) or 0 V Accuracy ±50 mV (Overcharge release voltage n (= Overcharge detection voltage n + Overcharge hysteresis voltage n) can be selected within the range 3.8 V to 4.4 V.) Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV step) Accuracy ±80 mV Overdischarge hysteresis voltage n (n = 1 to 4) of overdischarge detection 0.15 V to 0.70 V or 0 V (50 mV step) Accuracy ±100 mV (Overdischarge release voltage n (= Overdischarge detection voltage n + Overdischarge hysteresis voltage n) can be selected within the range 2.0 V to 3.4 V5 mV Overcurrent detection voltage 2 0.5 V Accuracy ±100 mV Overcurrent detection voltage 3 VDD / 2 Accuracy ±15 % Delay times for overcharge detection, overdischarge detection and overcurrent detection 1 can be set by external capacitors. (Delay times for overcurrent detection 2 and 3 are fixed internally.) Charge/discharge operation can be controlled through the control pins High-accuracy battery monitor amp GAMP = VBATTERY × 0.2 ±1.0% Voltage regulator VOUT = 3.3 V ±2.4 % (3 mA max.) High-withstand voltage Absolute maximum rating: 26 V Wide operating voltage range 6 V to 18 V Wide operating temperature range: -40°C to +85°C Low current consumption Operation mode 120 µA max Power down mode 0.1 µA max Lead-free, Sn 100%, halogen-free
