GENERAL DESCRIPTION
NJU8752 is a monaural analog signal input class-D amplifier for Piezo speaker. The NJU8752 includes Inversion operational amplifier input circuit, PWM modulator, Output short protector and a low voltage
detector. Input part operates on 3.3V(TYP) as power supply and Output part operates up to 13.75V(MAX).
Therefore, it drives Piezo speaker with Higher volume and High efficiency.
By using equivalent capacitance of Piezo speaker, the NJU8752 is configured as a BTL amplifier capable of operating Piezo speaker with the minimum externa components. A BTL configuration eliminates the need
for external AC coupling capacitors. Class D achieves high output-efficiency, which leads to low power operation for Piezo speaker, thus the NJU8752 is ideally suited for battery powered applications.

„FEATURES
 Piezo Speaker Driving
 Analog Audio Signal Input, 1-channel BTL Output
 Standby(Hi-Z), Mute Control
 Built-in Low Voltage Detector
 Built-in Short Protector
 Operating Voltage 3.0 ~ 3.6V(Input)
                         9.0 ~ 13.75V(Output)
 C-MOS Technology
 Package Outline SSOP14