NJW1280 Piezo-Sounder Drivers Nisshinbo NJW1280 Piezo-Sounder Drivers are high-capacitance switching drivers with charge pumps. These drivers come with the ability to drive outputs up to 30VPP from a 5V supply. The NJW1280 drivers feature an input signal detector, auto shutdown control, and Bi-CMOS technology. These drivers incorporate the shutdown function suitable for battery applications. The NJW1280 drivers are available in EQFN16-G2 and MSOP10 (TVSP10) packages. Typical applications include fire alarms, smoke detectors, and security alarms.