The LNK603DG-TL is a flyback power supply controller from Power Integrations. It is designed for use in low-power applications, such as USB chargers, power adapters, and LED lighting. The LNK603DG-TL features internal switching and output isolation, simplifying the design of the power supply. It can handle a maximum output power of 3.3W and operates at frequencies up to 85kHz. The LNK603DG-TL includes fault protection, including current limiting, open loop, over-temperature, and short circuit protection.