LM2686 Overview
The LM2686 CMOS charge-pump voltage converter operates as an input voltage doubler and a +5V regulator for an input voltage in the range of +2.85V to +6.5V. Three low cost capacitors are used in this circuit to provide up to 50mA of output current at +5.0V ( ± 5%). The LM2686 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple.