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S-8259AAD-M6T1U Datasheet(PDF) 11 Page - Seiko Instruments Inc |
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S-8259AAD-M6T1U Datasheet(HTML) 11 Page - Seiko Instruments Inc |
11 / 21 page BATTERY MONITORING IC FOR 1-CELL PACK Rev.1.0_02 S-8259A Series 11 Operation Remark Refer to " Connection Example". 1. Normal status The S-8259A Series monitors the voltage of the battery connected between VDD pin and VSS pin to control charging and discharging. When the battery voltage is in the range from overdischarge detection voltage (VDL) to overcharge detection voltage (VCU), CO pin and DO pin both output the VDD pin level. This condition is called the normal status. 2. Overcharge status When the battery voltage becomes higher than VCU during charging in the normal status and the condition continues for the overcharge detection delay time (tCU) or longer, CO pin outputs the VM pin level. This condition is called the overcharge status. When the battery voltage falls below the overcharge release voltage (VCL) and the condition continues for the overcharge release delay time (tCL) or longer, the S-8259A Series releases the overcharge status. 3. Overdischarge status When the battery voltage falls below VDL during discharging in the normal status and the condition continues for the overdischarge detection delay time (tDL) or longer, DO pin outputs the VSS pin level. This condition is called the overdischarge status. When the battery voltage exceeds the overdischarge release voltage (VDU), the S-8259A Series releases the overdischarge status. |
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