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S-8241ABIMC-GBIT2G Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8241ABIMC-GBIT2G Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 38 page Rev.7.6_00 BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Seiko Instruments Inc. 1 The S-8241 Series is a series of lithium ion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy voltage detection circuits and delay circuits. These ICs are suitable for protection of 1-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent. Features (1) Internal high-accuracy voltage detection circuit • Overcharge detection voltage: 3.9 to 4.4 V (5 mV-step) Accuracy of ±25 mV(+25 °C) and ± 30 mV(−5 to +55 °C) • Overcharge release voltage: 3.8 to 4.4 V *1 Accuracy of ±50 mV • Overdischarge detection voltage: 2.0 to 3.0 V (100 mV-step) Accuracy of ±80 mV • Overdischarge release voltage: 2.0 to 3.4 V *2 Accuracy of ±100 mV • Overcurrent 1 detection voltage: 0.05 to 0.3 V (5 mV-step) Accuracy of ±20 mV • Overcurrent 2 detection voltage: 0.5 V (fixed) Accuracy of ±100 mV (2) A high voltage withstand device is used for charger connection pins (VM and CO pins: Absolute maximum rating = 26 V) (3) Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1; overcurrent 2: tlOV2) are generated by an internal circuit. (External capacitors are unnecessary.) Accuracy of ±30% (4) Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting) (5) Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected. (6) Products with and without a power-down function can be selected. (7) Charger detection function and abnormal charge current detection function • The overdischarge hysterisis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection function). • If the output voltage at DO pin is high and the VM pin voltage becomes equal to or lower than the charger detection voltage (typ. −1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function). (8) Low current consumption • Operation: 3.0 μA typ. 5.0 μA max. • Power-down mode: 0.1 μA max. (9) Wide operating temperature range: −40 to +85 °C (10) Small package SOT-23-5, SNT-6A (11) Lead-free products *1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis The overcharge hysteresis can be selected in the range 0.0, or 0.1 to 0.4 V in 50 mV steps. (However, selection “Overcharge release voltage<3.8 V” is enabled.) *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis The overdischarge hysteresis can be selected in the range 0.0 to 0.7 V in 100 mV steps. (However, selection “Overdischarge release voltage >3.4 V” is enabled.) Applications • Lithium-ion rechargeable battery packs • Lithium- polymer rechargeable battery packs Packages Drawing code Package name Package Tape Reel Land SOT-23-5 MP005-A MP005-A MP005-A ⎯ SNT-6A PG006-A PG006-A PG006-A PG006-A |
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