The MAX865 is a CMOS charge-pump DC-DC converter in an ultra-small µMAX® package. It produces positive and negative outputs from a single positive input, and requires only four capacitors. The charge pump first doubles the input voltage, then inverts the doubled voltage. The input voltage ranges from +1.5V to +6.0V.The internal oscillator is guaranteed to be between 20kHz and 38kHz, keeping noise above the audio range while consuming minimal supply current. A 75Ω output impedance permits useful output currents up to 20mA.The MAX865 comes in a 1.11mm-high, 8-pin µMAX package that occupies half the board area of a standard 8-pin SOIC. For a device with selectable frequencies and logic-controlled shutdown, refer to the MAX864 data sheet.ApplicationsData AcquisitionLCD PanelsLow-Cost Split Supply for Low-VoltageLow-Voltage GaAsFET Bias in Wireless HandsetsSplit Supply for Analog CircuitrySplit Supply from 3 Ni Cells or 1 Li+ CellVCO and GaAsFET Supplies