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BUY BD3861FS https://www.utsource.net/itm/p/879944.html
Audio sound controller
Description: The BD3861FS is a high-efficiency, low-noise, low-distortion, high-output power amplifier IC from ROHM. Features: Low distortion: THD+N 0.01% typ. Low noise: -97dBV typ. High output power: 4.2W typ. (VCC=5V, RL=4惟) High efficiency: 90% typ. (VCC=5V, RL=4惟) Built-in thermal shutdown circuit Built-in over-current protection circuit Built-in mute circuit Built-in standby circuit Applications: Portable audio systems Mobile phones Personal audio players Digital audio players Portable speakers (For reference only)