STMicroelectronics HVLED805 Off-Line LED Drivers

STMicroelectronics HVLED805 Off-Line LED Drivers provide an efficient, compact, cost-effective solution for LED driving. The HVLED805 are high-voltage primary switchers for operating directly from the rectified mains with minimum external parts. STMicroelectronics HVLED805 Off-Line LED Drivers combine a high-performance, low-voltage PWM controller chip and an 800V, avalanche-rugged power MOSFET in the same package. The PWM is a current-mode controller IC specifically designed for ZVS (zero voltage switching) fly-back LED drivers, with constant output current (CC) regulation using primarysensing feedback.This eliminates the need for the opto-coupler, the secondary voltage reference, and the current sense on the secondary side while still maintaining a good LED current accuracy. Moreover it guarantees safe operation when a short circuit of one or more LEDs occurs.