Datasheet ER18505 (EEMB) - 7

Document Name Document No. Date Page ER18505 Specification ZJQM-RD-SPC-H0329 2019-04-19 7/9
Voltage platform characteristic diagram at different temperatures 不同温度下电压平台特性图 Voltage/V Temperature/℃
7. Memory Backup Circuit Design Suggestion
存储器备份电路设计建议 A primary lithium battery is not rechargeable, when used for memory backup in combination with another power source; current may flow into the battery from the other source. A protection diode and resistor into the circuit is needed to avoid battery charging or over discharging. Select a silicon diode or a diode with minimum leakage current, and design the circuit so that the amount of charging due to leakage current will not exceed 2% of the nominal battery capacity over the total period of use. 当与另一个电源组合用作存储器备份时，一次锂电池不可再充电；电流可能从另一个源流入电池。需要 在电路中使用保护二极管和电阻器以避免电池充电或过度放电。选择硅二极管或具有最小漏电流的二极 管，并设计电路，使漏电流引起的充电量不超过总使用时间内电池标称容量的 2%。 While used for memory backup, the following circuit shall be applied: 用于内存备份时，应使用以下电路：