Application Circuit to Generate Plus and Minus Supplies Using the ISL97701 Boost Regulator Application Note 1673 Authors: Don LaFontaine, Dan Goodhew Application Circuit to Generate Plus and Minus Supplies Using the ISL97701 Boost Regulator Introduction forward biased. Since the dot end is at VIN, L1 delivers its stored energy to C1 and charges it up to a higher voltage than This a……