S-8209B Series BATTERY PROTECTION IC www.ablic.com WITH CELL-BALANCE FUNCTION ABLIC Inc., 2008-2019 Rev.3.8 00 The S-8209B Series is a protection IC for lithium-ion / lithium polymer rechargeable batteries and includes a high-accuracy voltage detection circuit and a delay circuit. The S-8209B Series has a transmission function and two types of cell-balance function so that users are also able to configure a protection circuit with series multi-cell. Features High-accuracy voltage detection circuit *1 Overcharge detection voltage 3.55 V to 4.40 V (5 mV step) Accuracy 25 mV *1 *2 Overcharge release voltage 3.50 V to 4.40 V Accuracy 50 mV *1 *3 Cell-balance detection voltage 3.55 V to 4.40 V (5 mV step) Accuracy 25 mV *1 *4 Cell-balance release voltage 3.50 V to 4.40 V Accuracy 50 mV Overdischarge detection voltage 2.0 V to 3.0 V (10 mV step) Accuracy 50 mV *5 Overdischarge release voltage 2.0 V to 3.4 V Accuracy 100 mV Settable delay time by external capacitor for output pin Control charging, discharging, cell-balance by CTLC pin, CTLD pin *6 Two types of cell-balance function charge / discharge Wide range of operation temperature Ta = 40C to +85C Low current consumption 7.0 A max. *7 Lead-free, Sn 100%, halogen-free *1. Regarding selection of overcharge detection voltage, overcharge release voltage, cell-balance detection voltage and cell-balance release voltage, refer to Remark 3 in3. Product name lis of Product Name Structur. *2. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage (Overcharge hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.) *3. Select as to overcharge detection voltage > cell-balance detection voltage. *4. Cell-balance release voltage = Cell-balance detection voltage Cell-balance hysteresis voltage (Cell-balance hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.) *5. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage is selectable in 0 V to 0.7 V in 100 mV step.) *6. Also available the product without discharge cell-balance function *7. Refer to Product Name Structur for details. Applications Lithium-ion rechargeable battery pack Lithium polymer rechargeable battery pack Packages SNT-8A 8-Pin TSSOP 1 BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION S-8209B Series Rev.3.8 00 Block Diagram Delay circuit DO 8.31 M CDT CO VDD + Overcharge CB detection comparator + Cell-balance detection comparator CTLD + 400 nA CTLC Overdischarge VSS detection 400 nA comparator Remark The diodes in the IC are parasitic diodes. Figure 1 2