This post explains for the semiconductor NS4263.
The Part Number is NS4263.
The function of this semiconductor is 3W Stereo Class AB Audio Amplifier + Stereo Headset.
Manufacturers : Nsiway
Preview images :
NS4263 is a Class AB / Class D operation mode switching function, ultra-low EMI, no filter, 3W dual channel audio amplifier. In addition, when the headphone plug into the jack, the audio power amplifier will single-ended mode of operation to drive stereo headphones. Through a control pin to make the chip in the AB class or D type of work mode to switch between to match the different application environment. Even in the Class D mode NS4263 uses advanced technology to greatly reduce EMI interference over a full bandwidth range, minimizing the impact on other components. To simplify the design of the audio system, NS4263 bridge-connected speaker magnification mode and single-ended stereo headphone amplification mode are implemented on the same chip. NS4263 eliminates the need for filter PWM modulation structure and feedback resistor built-in way to reduce external components, PCB area and system cost. NS4263 built-in overcurrent protection, overheating protection and undervoltage protection, effectively protect the chip in the abnormal working conditions are not damaged. And the use of spread spectrum technology to fully optimize the new circuit design, up to 90% efficiency is more suitable for mobile phones and other portable audio products.
The NS4263 is available in SOP16 and TSSOP20 packages and is specified over the -40 ° C to 85 ° C operating temperature range. […]