PT4203 Datasheet - PowTech

PT4203 Primary Side CC Regulator

PT4203 is targeted to below 10W LED lighting applications. It is designed for the flyback topology, and regulates output current without the secondary feedback loop. The PT4203 provide accurate CC (constant current) regulation with built in compensation circuitry. Integrated line and primary induct.

PT4203 Features

* z z z z z z z z z z CC Control Without Secondary Feed back Compensates transformer Inductor Variation Compensates Line Voltage Variation Drive NPN or DNMOS Output Over Voltage Protection Output Short Circuit Protection Feedback resistor open circuit protection Line Under Voltage Protection Cycle by

PT4203-PowTech.pdf