The TPS65135 is a high-efficient, single-inductor, dual-output converter. Due to its single-inductor multiple-output (SIMO) technology, the converter uses a minimum of external components. The device operates with a buck-boost topology and generates a positive and a negative output voltage above or below the input voltage rail. The SIMO technology enables excellent line and load regulation required to avoid disturbance of a mobile phone display as a result of input voltage variations that occur during transmit periods. The device can also be used as a standard ±supply as long as the output current mismatch between the rails is smaller than 50 percent.
TPS65135 – Single-Inductor, Multiple-Output (SIMO) Regulator - [Link]