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S-8253AAF-T8T1GZ Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8253AAF-T8T1GZ Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 32 page Rev.3.7_00 BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series Seiko Instruments Inc. 1 The S-8253A/B Series are protection ICs for 2-serial or 3-serial cell lithium-ion rechargeable batteries and include high-accuracy voltage detectors and delay circuits. These ICs are suitable for protecting lithium-ion battery packs from overcharge, overdischarge and overcurrent. Features (1) High-accuracy voltage detection for each cell • Overcharge detection voltage n (n = 1 to 3) 3.9 V to 4.4 V (50 mV steps) Accuracy ±25 mV • Overcharge release voltage n (n = 1 to 3) 3.8 V to 4.4 V *1 Accuracy ±50 mV • Overdischarge detection voltage n (n = 1 to 3) 2.0 V to 3.0 V (100 mV steps) Accuracy ±80 mV • Overdischarge release voltage n (n = 1 to 3) 2.0 V to 3.4 V *2 Accuracy ±100 mV (2) Three-level overcurrent detection (Including load short circuiting detection) • Overcurrent detection voltage 1 0.05 V to 0.30 V (50 mV steps) Accuracy ±25 mV • Overcurrent detection voltage 2 0.5 V (Fixed) • Overcurrent detection voltage 3 1.2 V (Fixed) (3) Delay times (Overcharge, Overdischarge, Overcurrent) are generated by an internal circuit. (External capacitors are unnecessary). (4) Charge / discharge operation can be inhibited via the control pin. (5) 0 V battery charge function available / unavailable are selectable. (6) High-voltage withstand devices Absolute maximum rating 26 V (7) Wide operating voltage range 2 to 24 V (8) Wide operating temperature range −40 to +85 °C (9) Low current consumption • Operation mode 28 µA max. (+25 °C) • Power-down mode 0.1 µA max. (+25 °C) (10) Lead-free products *1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.1 to 0.4 V in 50 mV steps.) *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.2 to 0.7 V in 100 mV steps.) Applications • Lithium-ion rechargeable battery packs • Lithium polymer rechargeable battery packs Package Drawing Code Package Name Package Tape Reel 8-Pin TSSOP FT008-A FT008-E FT008-E |
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