The SY5018BFAC with LED Drivers SO-8_3.9 mm RoHS is a type of small low voltage differential switch manufactured by Silergy. It is designed to be used with LEDs to drive currents up to 40mA, with an operating voltage range of 2.5V to 5.0V, making it an ideal choice for low voltage applications. The device features an adjustable on/off current ratio, high switching speed, low EMI, and an adjustable output. It is compliant with the RoHS Directive, and it comes in a SO-8 3.9mm package.