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S8243A Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S8243A Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 35 page S-8243A/B Series www.sii-ic.com BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK © Seiko Instruments Inc., 2002-2010 Rev.3.0_00 Seiko Instruments Inc. 1 The S-8243A/B 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. Features (1) 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 • 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 + 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 • 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 + Hysteresis voltage n) can be selected within the range 2.0 V to 3.4 V.) (2) Three-level overcurrent protection including protection for short-circuiting • Overcurrent detection voltage 1 0.05 V to 0.3 V (50 mV step) Accuracy ±25 mV • Overcurrent detection voltage 2 0.5 V Accuracy ±100 mV • Overcurrent detection voltage 3 VDD / 2 Accuracy ±15 % (3) 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.) (4) Charge/discharge operation can be controlled through the control pins. (5) High-accuracy battery monitor amp GAMP = VBATTERY × 0.2 ±1.0% (6) Voltage regulator VOUT = 3.3 V ±2.4 % (3 mA max.) (7) High input-voltage device Absolute maximum rating: 26 V (8) Wide operating voltage range 6 V to 18 V (9) Wide operating temperature range: −40°C to +85°C (10) Low current consumption • Operation mode 120 μA max. • Power down mode 0.1 μA max. (11) Lead-free, Sn 100%, halogen-free *1 *1. Refer to “ Product Name Structure” for details. Applications • Lithium-ion rechargeable battery packs • Lithium polymer rechargeable battery packs Package • 16-Pin TSSOP |
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