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BUY STA500 https://www.utsource.net/itm/p/686922.html
30V 3.5A QUAD POWER HALF BRIDGE
STA500 is a high-performance, low-power, low-voltage, low-distortion, stereo audio power amplifier from STMicroelectronics. It is designed to drive stereo speakers in portable applications such as mobile phones, portable media players, and portable gaming devices. Features: Low-power operation: 1.2 W (typical) at 5 V Low-voltage operation: 2.7 V to 5.5 V Low-distortion: THD+N 0.1% (typical) High-efficiency: 90% (typical) Low-noise: -90 dBV (typical) Short-circuit protection Thermal shutdown protection Low-EMI Applications: Mobile phones Portable media players Portable gaming devices (For reference only)