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S-8242BAE-I8T1G Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8242BAE-I8T1G Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 30 page Rev.1.4_00 BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK S-8242B Series Seiko Instruments Inc. 1 The S-8242B Series are protection ICs for 2-serial-cell lithium-ion/lithium polymer rechargeable batteries and include high-accuracy voltage detectors and delay circuits. These ICs are suitable for protecting 2-cell rechargeable lithium-ion / lithium polymer battery packs from overcharge, overdischarge, and overcurrent. Features (1) High-accuracy voltage detection for each cell • Overcharge detection voltage n (n = 1, 2) 3.9 V to 4.5 V (50 mV steps) Accuracy ±25 mV • Overcharge release voltage n (n = 1, 2) 3.8 V to 4.5 V *1 Accuracy ±50 mV • Overdischarge detection voltage n (n = 1, 2) 2.0 V to 3.0 V (100 mV steps) Accuracy ±50 mV • Overdischarge release voltage n (n = 1, 2) 2.0 V to 3.4 V *2 Accuracy ±100 mV *1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV steps.) *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV steps.) (2) Two-level overcurrent detection (overcurrent 1, overcurrent 2) • Overcurrent detection voltage 1 0.05 V, 0.08 V to 0.30 V (10 mV steps) Accuracy ±15 mV • Overcurrent detection voltage 2 1.2 V (fixed) Accuracy ±300 mV (3) Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external capacitors are unnecessary). (4) 0 V battery charge function available/unavailable are selectable. (5) Charger detection function • The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.7 V typ.) (Charger detection function). (6) High-withstanding-voltage devices Absolute maximum rating: 28 V (7) Wide operating temperature range −40°C to +85 °C (8) Low current consumption Operation mode 10 µA max. (+25°C) Power-down mode 0.1 µA max. (+25°C) (9) Small package SNT-8A, 8-Pin TSSOP (10) Lead-free products Applications • Lithium-ion rechargeable battery packs • Lithium polymer rechargeable battery packs Packages Package Name Drawing Code Package Tape Reel Land SNT-8A PH008-A PH008-A PH008-A PH008-A 8-Pin TSSOP FT008-A FT008-E FT008-E |
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