EVAL5987/A Demonstration Boards STMicroelectronics EVAL5987/A Demonstration Boards provide a fully functional step-down switching regulator with an output current of up to 3A. These boards integrate the L5987/A step-down switching regulator, with the external components required for a typical application. The rated voltage of the input capacitor and the Schottky diode rectifier repetitive peak reverse voltage are both 25V. This makes the board capable of covering the entire 2.9V to 18V input voltage range of the L5987/A device.