The FM2842 AC-DC Controllers & Regulators ROHS manufactured by Fuman is a SOP-9 integrated circuit. It is used as an AC-DC step-down switch mode power converter controller for offline applications such as lighting, adapter, motor speed, and power supplies. The device features a power switch current up to 3A, a versatile external compensation circuit, an accurate 500kHz switching frequency, a CC/CV control loop, and an excellent EMC performance. It also has power diagnosis (OTP protection, NL port ISEN_TYPE, Power Good indication, OVP, and OTP) and other protections (OCP,PV detection, OTP). The device comes in a 9-pin SOP package, making it suitable for space-constrained applications.