Nisshinbo Micro Devices,Audio, 16-Pin EQFN16-G2 NJU72501MG2-TE1

The New japan Radio NJU72501 series is a switching driver with multi mode charge pump for piezo sounder. It can drive outputs up to 18Vpp from 3V supply. For adjusting the piezoelectric sounder sound volume, the charge pump can operate in either of a 1x, 2x or 3x mode.

Multi Mode Charge Pump
Input Signal Detector & Shutdown Control
Output Short circuit Protection Circuit
C MOS Technology
Suitable for battery application