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Rev 1 109 D S 2 7 3 1 CacheMemory BatteryBackup Management IC General Description The DS2731 is a complete powermanagement solution for modular backup applications It is wellsuited for 25V and below memory bus voltages with an input voltage of 12V The DS2731 includes an internal MOSFET switching power stage for charging a onecell lithium chemistry bat tery It has a fully integrated synchronous buck regulator capable of supplying up to 450mA of cache backup sup ply current and the necessary logic......