BUY FA3641N https://www.utsource.net/itm/p/1524235.html
PWM control IC with light load power saving function For Switching Power Supply Control
Description: FA3641N is a low-noise, low-distortion, high-efficiency, low-power amplifier IC manufactured by Fuji Electric. Features: Low noise: 1.2nV/√Hz Low distortion: 0.0003% (typical) High efficiency: 85% (typical) Low power consumption: 5.5mA (typical) Wide supply voltage range: 2.7V to 5.5V Operating temperature range: -40°C to +85°C Package: SOP-8 Applications: Portable audio devices Mobile phones Digital audio players Portable media players Home audio systems Car audio systems (For reference only)