FT833BD-DRB

Fremont Micro Devices FT833xxx High Precision PSR Constant Current LED Driver FMD Confidential FEATURES  Built-in 650V power MOSFET  PSR constant current control without secondary sense and feedback circuit  No auxiliary winding for sensing and supplying  Ultra low operating current for high efficiency  Universal input voltage  ±3% LED current accuracy  Choice for maximum duty cycle and OVP voltage  Precision OVP voltage for best LED open circuit protection  LED short circuit protection  CS resistor short circuit protection  VCC under-voltage protection  Over temperature compensation  Available in SOP8 and DIP8 packages APPLICATIONS  Isolated solid state lighting  GU10/E27 LED bulb, spot light  Other LED lighting DESCRIPTION FT833xxx is a high precision primary-side feedback and regulation constant current driver for LED lighting applications. It is designed to work in inductor current discontinuous conduction mode (DCM) and is especially suitable for flyback converter under universal input. Under universal input voltage from 90V to 264V, the system output power for FT833Sxx, FT833Axx, FT833Bxx (SOP8) and FT833BD (DIP8) is recommended to be no more than 3W, 6W, 9W, and 12W, respectively. The FT833xx integrates a 650V power MOSFET and eliminates secondary sense and feedback circuit. The loop compensation components are also removed while maintaining stability over all operating conditions. It uses a source drive architecture and special demagnetization sen...