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S-8250BAK-I6T1U Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8250BAK-I6T1U Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 32 page S-8250B Series www.sii-ic.com BATTERY PROTECTION IC FOR 1-CELL PACK © SII Semiconductor Corporation, 2013-2016 Rev.1.1_02 1 The S-8250B Series is a protection IC for 1-cell lithium-ion / lithium polymer rechargeable batteries and includes high-accuracy voltage detection circuits and delay circuits. The S-8250B Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge and overcurrent. By adjusting power supply voltage dependency of discharge overcurrent detection voltage in accordance with ON resistance of the charge-discharge control FET, the S-8250B Series realizes high-accuracy discharge overcurrent detection. Features • High-accuracy discharge overcurrent detection circuit Discharge overcurrent detection voltage 0.050 V to 0.150 V (1 mV step) Accuracy ±10 mV (Ta = +25°C) (Power supply voltage dependency can be set in accordance with ON resistance of the charge-discharge control FET.) • High-accuracy voltage detection circuit Overcharge detection voltage 4.100 V to 4.600 V (5 mV step) Accuracy ±20 mV (Ta = +25°C) Accuracy ±25 mV (Ta = −10°C to +60°C) Overcharge release voltage 3.700 V to 4.600 V *1 Accuracy ±30 mV Overdischarge detection voltage 2.000 V to 2.800 V (10 mV step) Accuracy ±50 mV Overdischarge release voltage 2.000 V to 3.000 V *2 Accuracy ±100 mV Load short-circuiting detection voltage 0.250 V to 0.500 V (50 mV step) Accuracy ±50 mV Charge overcurrent detection voltage −0.200 V to −0.025 V (25 mV step) Accuracy ±15 mV • Detection delay times are generated only by an internal circuit (External capacitors are unnecessary). • 0 V battery charge function is selectable: Available, unavailable • Power-down function is selectable: Available, unavailable • Release condition of discharge overcurrent status is selectable: Load disconnection, charger connection • High-withstand voltage: VM pin and CO pin: Absolute maximum rating 28 V • Wide operation temperature range: Ta = −40°C to +85°C • Low current consumption During operation: 2.0 μA typ., 4.0 μA max. (Ta = +25°C) During power-down: 50 nA max. (Ta = +25°C) • Lead-free (Sn 100%), halogen-free *1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage can be selected from a range of 0 V to 0.4 V in 50 mV step.) *2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage can be selected from a range of 0 V to 0.7 V in 100 mV step.) Applications • Lithium-ion rechargeable battery pack • Lithium polymer rechargeable battery pack Package • SNT-6A |
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