DK503 Overview
the start-up current after power-on charges the VDD energy storage capacitor. When the VDD voltage reaches 4.95 V, the start-up process ends and the chip control circuit starts to work. Constant voltage operation mode The chip samples the output voltage through the FB pin.
DK503 Key Features
- Full voltage input 85V-265V
- Built-in 700V high voltage power tube
- High voltage constant current starting circuit
- Patented self-powered technology, no external auxiliary winding power supply
- Built-in peak current adjustment function, according to the load real-time adjustment peak current, stable working frequ
- The output voltage can be adjusted by FB resistance
- Over-temperature, over-voltage, overload, output short circuit protection functions
- 4 KV ESD anti-static test