NJU8754

NJU8754 Analog Signal Input Monaural Class D Power Amplifier GENERAL DESCRIPTION The NJU8754 is an analog signal input monaural class D power amplifier. The NJU8754 includes Inversion operatinal amplifier input circuit, PWM modulator, an output-short protector and a low voltage detector. The NJU8754 incorporates BTL amplifier, which eliminate AC coupling capacitors, capable of driving up to 0.6W at 3.6V supply voltage with simple external LC low-pass filters. The NJU8754 features high power-efficiency by class-D operation and very small package, and is suited for cellular phone, PDA, etc. FEATURES Operating Voltage :2.7 to 5.25V Monaural Analog Signal Input Monaural BTL Output :1.2W at 5V into 8Ohms :0.6W at 3.6V into 8Ohms Standby(Hi-Z), Mute Control Built-in Short Protector Built-in Low Voltage Detector CMOS Technology Package Outline :SSOP10, QFN20-M1 PACKAGE OUTLINE NJU8754V NJU8754KM1 PIN CONFIGURATION NC OUTP VDDO OUTN NC VDD IN COM MUTEB STBYB 1 10 29 38 47 56 SSOP10 VSS OUTP VDDO OUTN VSS 15 16 VSS VSS NC VDD NC 20 1 11 10 VSS VSS NC STBYB NC 6 5 NC IN COM MUTEB NC QFN20-M1 Ver.2008-07-14 -1- NJU8754 BLOCK DIAGRAM VDD VSS IN COM + + Soft Start Control Logic MUTEB STBYB Pulse Width Modulator Short Protection Low BATT Protection OUTP VDDO OUTN PIN DESCRIPTION No. SSOP10 QFN20-M1 SYMBOL I/O FUNCTION 1 19 VDD − Power supply : VDD=3.6V 22 IN I Signal input 3 3 COM − Analog common 4 4 MUTEB I Mute control Low : Mute ON H...