【正文】 tion voltage (VCDET) by test circuits shown in this datasheet after applying the power supply while pullingdown the CTLC, CTLD pins to the level of VSS pin outside the IC. *2. In case of using CTLC, CTLD pins pulleddown to the level of VSS pin externally, the current flows into the VDD pin (IDD) is calculated by the following formula. IDD = IOPE + ICTLCH + ICTLDHTest CircuitsOperation1. Normal Status In the S8209A Series, both of CO and DO pin get the VSS level。 the voltage between VDD and VSS (VDS) is more than the overdischarge detection voltage (VDL), and is less than the overcharge detection voltage (VCU) and respectively, the CTLC pin input voltage (VCTLC) the CTLC pin voltage “H” (VCTLCH), the CTLD pin input voltage (VCTLD) the CTLD pin voltage “H” (VCTLDH). This is the normal status. 2. Overcharge Status In the S8209A Series, the CO pin is in high impedance。 when VDS gets VCU or more, or VCTLC gets VCTLCH or more. This is the overcharge status. If VDS gets the overcharge release voltage (VCL) or less, and VCTLC gets the CTLC pin voltage “L” (VCTLCL) or less, the S8209A Series releases the overcharge status to return to the normal status. 3. Overdischarge Status In the S8209A Series, the DO pin is in high impedance。 when VDS gets VDL or less, or VCTLD gets VCTLDH or more. This is the overdischarge status. If VDS gets the overdischarge release voltage (VDU) or more, and VCTLD gets the CTLD pin voltage “L” (VCTLDL) or less, the S8209A Series releases the overdischarge status to return to the normal status. 4. Cellbalance Function In the S8209A Series, the CB pin gets the level of VDD pin。 when VDS gets the cellbalance detection voltage (VBU) or more. This is the charge cellbalance function. If VDS gets the cellbalance release voltage (VBL) or less again, the S8209A Series sets the CB pin the level of VSS pin. In addition, the CB pin gets the level of VDD pin。 when VDS is more than VDL, and VCTLD is VCTLDH or more. This is the discharge cellbalance function. If VCTLD gets VCTLDL or less, or VDS is VDL or less again, the S8209A Series sets the CB pin the level of VSS. 5. Delay Circuit In the S8209A Series, users are able to set delay time which is from detection of changes in VDS, VCTLC, VCTLD to output to the CO, DO, CB pin. For example in the detection of overcharge status, when VDS exceeds VCU, or VCTLC gets VCTLCH or more, charging to CCDT starts via RCDT. If the voltage between CDT and VSS (VCDT) reaches the CDT pin detection voltage (VCDET), the CO pin is in high impedance. The output pin delay time tD is calculated by the following formula. tD [s] = MΩ(Typ.) CCDT [μF] The electric charge in CCDT starts to be discharged when the delay time has finished. The delay time that users have set for the CO pin, as seen above, is settable for each output pin DO, CB.Example of Protection Circuit with S8209A for Series MultiCellsFigure 16 shows the example of protection circuit with the S8209A for series multicells. Regarding the operation of protection circuit with the S8209A for seriesconnected batteries, refer to the application note “S8209A Series Usage Guidelines”.Caution 1. The above constants may be changed without notice. 2. The example of connection shown above and the constant do not guarantee proper operation. Perform thorough evaluation using the actual application to set the constant.Precautions* The application conditions for the input voltage, output voltage, and load current should not exceed the package power dissipation. * Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the builtin electrostatic protection circuit. * SII claims no responsibility for any and all disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party.