NJU8789

NJU8789 Monaural BTL Output Clock-less Switching Driver for Class D Amplifier GENERAL DESCRIPTION The NJU8789 is a monaural BTL output switching driver for class D amplifier including Separated Power Source terminals between Input and Output. It converts 1bit digital signal input, such as PWM or PDM signal. The NJU8789 realizes very high power-efficiency by class D operation. Therefore, It is suitable for portable set with speaker. PACKAGE OUTLINE NJU8789V FEATURES Clock-less switching driver 1-channel 1bit Audio Signal Input Monaural BTL Output Standby(Hi-Z) Control Function Operating Voltage : 1.8V to 4.5V Driving Voltage : VDD to 4.5V CMOS Technology Package Outline : SSOP10 PIN CONFIGURATION VDD IN NC TEST STBYb 1 2 3 4 5 10 VSS 9 OUTP 8 VDDO 7 OUTN 6 VSS BLOCK DIAGRAM VDD VDDO IN STBYb LEVEL SHIFTER LEVEL SHIFTER VSS OUTN OUTP NJU8789 Ver.2009-01-21 -1- NJU8789 TERMINAL DESCRIPTION No. SYMBOL I/O Function 1 VDD − Power Supply 8 VDDO − Output ...