High voltage boost, inverting charge pumps lower noise

LINEAR TECHNOLOGY LTC3265 high voltage, highly integrated, low noise dual output power supply takes a single positive input supply (VIN_P) and generates low noise bipolar rails up to ±2•VIN_P without any inductors. Device includes a boost doubling charge pump, an inverting charge pump and two low dropout (LDO) regulators. The boost charge pump has a wide 4.5V to 16V input range and powers the positive LDO post regulator from its output, VOUT+. The inverting charge pump has an even wider input range (4.5V to 32V) which may be connected to either the boost input or output. The negative LDO post regulator is powered from the output of the inverting charge pump, VOUT-. http://www.linear.com/product/LTC3265