Are you working with DC current? Implement this TL7660CP charge pump voltage doubler from Texas Instruments in order to have different voltages generated. With an output that has a voltage of -1.5 to -10|3 to 20 V, this is power management at its best. In order to ensure parts aren"t damaged by bulk packaging, this product comes in tube packaging to add a little more protection by storing the loose parts in an outer tube. This inverting charge pump has a minimum operating temperature of -40 °C and a maximum of 85 °C. This device has a minimum operating supply voltage of 1.5 V and a maximum of 10 V.