NS4263B Description：
NS4263B Is a class with AB / D working mode switching function, ultra-low EMI, no filter, 3W dual-channel audio power amplifier. In addition, when the headset plug is connected to the jack, the audio power amplifier drives the stereo headset in a single-end working mode.The chip is switched between AB or D working modes through a control pin to match different application environments. Even though working in class D mode NS4263B adopts advanced technology, it greatly reduces EMI interference in full bandwidth and minimizing the impact on other components.In order to simplify the design of the audio system, the NS4263B‘s bridge connection speaker amplifier mode and the single-end stereo headset amplifier mode are all implemented on the same chip. NS4263B PWM modulation structure and feedback resistance without filter reduce external components, PCB area and system costs.NS4263B Built-in overcurrent protection and undervoltage protection function, effectively protect the chip from being damaged under abnormal working conditions. NS4263B Provide a standard SOP16 package.
NS4263B Features：
Working voltage range: 3.0V-5.5V
Switching between AB and D working modes
One line pulse control working mode and shutdown mode
Integrated stereo headphone output function
Output power 3.1W@ClassD /Load=4ohm
THD+N=0.2%@VDD=5V/Po=1W
Excellent full bandwidth EMI suppression capability
Excellent "power on and power off" noise suppression
Built in overcurrent protection, undervoltage protection, etc
Provide standard SOP16 packaging
NS4263B Application scope：
Laptop
Desktop computer
Low voltage audio system
NS4263B Application Circuit：
NS4263B Pin configuration：
NS4263B Functional Block Diagram：
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