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2017-08-24 22:41  
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In this application, the Vl-7660 is connected as a voltage splitter. Note that the normal output pin is connected to ground and the normal ground pin is used as the output. The switches that allow the charge pumping are bidirectional; therefore, charge transfer can be performed in reverse.

The 1-MO resistor is used to avoid start-up problems by forcing the internal regulator on. An application for this circuit would be driving low-voltage, ?± 7.5 Vdc, circuits from ?± 15 Vdc supplies, or low-voltage logic from 9 to 12 V batteries.

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