S-8211C Series BATTERY PROTECTION IC FOR 1-CELL PACK www.sii-ic.com Seiko Instruments Inc., 2004-2014 Rev.7.6 00 The S-8211C Series is a protection IC for 1-cell lithium-ion / lithium polymer rechargeable battery and includes high- accuracy voltage detection circuits and delay circuits. The S-8211C Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge, and overcurrent. Features High-accuracy voltage detection circuit Overcharge detection voltage 3.9 V to 4.5 V (5 mV step) Accuracy 25 mV (Ta = +25C) Accuracy 30 mV (Ta = 5C to +55C) *1 P Overcharge release voltage 3.8 V to 4.43 VP Accuracy 50 mV Overdischarge detection voltage 2.0 V to 3.0 V (10 mV step) Accuracy 50 mV *2 P Overdischarge release voltage 2.0 V to 3.4 VP Accuracy 100 mV Discharge overcurrent detection voltage 0.05 V to 0.30 V (10 mV step) Accuracy 15 mV Load short-circuiting detection voltage 0.5 V (fixed) Accuracy 200 mV Charge overcurrent detection voltage 0.1 V (fixed) Accuracy 30 mV Detection delay times are generated only by an internal circuit (external capacitors are unnecessary). Accuracy 20% High-withstand voltage device is used for charger connection pins (VM pin and CO pin: Absolute maximum rating = 28 V) 0 V battery charge functionavailabl /unavailabl is selectable. Power-down functionavailabl /unavailabl is selectable. Wide operation temperature range Ta = 40C to +85C Low current consumption During operation 3.0 A typ., 5.5 A max. (Ta = +25C) During power-down 0.2 A max. (Ta = +25C) *3 Lead-free, Sn 100%, halogen-freeP *1. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage (Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 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 as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.) *3. Refer to Product Name Structur for details. Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Packages SOT-23-5 SNT-6A Seiko Instruments Inc. 1BATTERY PROTECTION IC FOR 1-CELL PACK S-8211C Series Rev.7.6 00 Block Diagram Output control circuit 0 V battery charge / Oscillator control Divider control charge inhibition circuit DO circuit circuit VDD + Charger detection circuit CO Overcharge + detection comparator Discharge overcurrent detection comparator R VMD + VM + R Charge overcurrent detection VMS comparator Overdischarge + detection comparator Load short-circuiting detection VSS comparator Remark All diodes shown in figure are parasitic diodes. Figure 1 2 Seiko Instruments Inc.