NJU8754 Analog Signal Input Monaural Class D Power Amplifier PACKAGE OUTLINE 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 NJU8754V 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. NJU8754KM1 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 PIN CONFIGURATION 15 11 16 10 V V SS SS V 1 10 V DD SS V V SS SS IN 2 9 OUT P NC NC COM 3 8 V DDO V STBYB MUTEB 4 7 OUT DD N STBYB 5 6 V SS NC NC 20 6 SSOP10 15 QFN20-M1 Ver.2008-07-14 -1- NC NC IN OUT P COM V DDO OUT MUTEB N NC NC NJU8754 BLOCK DIAGRAM V V DD SS IN - OUT P Pulse + Width V DDO Modulator - COM + OUT N Short Protection Soft Start Control Logic Low BATT Protection MUTEB STBYB PIN DESCRIPTION No. SYMBOL I/O FUNCTION SSOP10 QFN20-M1 1 19 V Power supply : V =3.6V DD DD 2 2 IN I Signal input 3 3 COM Analog common Mute control 4 4 MUTEB I Low : Mute ON High : Mute OFF Standby control 5 7 STBYB I Low : Standby ON High : Standby OFF 6, 10 9,10, 6,17 V Power GND : V =0V SS SS 7 12 OUT O Negative output N 8 13 V Output power supply DDO 9 14 OUT O Positive output P 1,5,6,8, NC Non connection 11,15,18,20 *The relations of V = 0V and V = V must be maintained. SS DD DDO *V (SSOP10:Terminal No.6,10, QFN20-M1:Terminal No.9,10,16,17) should be connected at a nearest point to SS the IC. *V (SSOP10:Terminal No.8, QFN20-M1:Terminal No.13) should be connected at a nearest point to the IC. DDO *MUTEB(SSOP10, QFN20-M1:Terminal No.4) and STBY(SSOP10:Terminal No.5, QFN20-M1:Terminal No.7) must be connected to V , when these terminals are not used. DD Ver.2008-07-14 - 2 -