NJU72501 Datasheet (New Japan Radio)

NJU72501, Piezo-sounder Driver

The NJU72501 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.

Because NJU72501 has the shutdown function, it is sui

NJU72501 Features

* Operating Voltage : 2.3 to 5.0V(1x/ 2x Mode), 2.3 to 3.4V(3x Mode)

* Consumption current (Active) : IDS=0.3mA typ. (VIN=3V, DIN=4kHz, CPIEZO=15nF, 1x Mode) (Shutdown): IDS=1uA max. (VIN=3V , DIN=0V)

* Multi-Mode Charge Pump (1x/2x/3x)

* Input Signal Detector & Shutdown Control