Published:2009/7/24 8:50:00 Author:Jessie | From:SeekIC
By connecting a second inductor to the LX output of a MAX641 step-up dc/dc converter, the efficiency and power-handling ability can be dramatically improved. This circuit can supply 5 V at 40 mA with only 1.5-V input. With 2.4-V input, the circuit can supply 180 mA at 5 V. Notice that VOUT is not an output (in this circuit), but is the MAX641 voltage input. The pin is so labeled because VOUT is usually the output/feedback terminal of a stand-alone MAX641.
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