The DiodesZetex 18VPP output piezo sounder driver is integrated charge pump boost converter. This is capable of driving a ceramic/piezo sounder with 27VPP from a 4.5V power supply. The charge pump can operate in either 1x, 2x or 3x mode. The boost converter operate at a fixed frequency of 100kHz and provide a 3X VIN output with a minimum number of external component. No voltage cross output at shutdown mode
Low current consumption