Datasheet Linear Technology LT3799EMSE-1#TRPBF — Datenblatt

LT3799-1
Offline Isolated Flyback
LED Controller with Active PFC
Features Description Isolated PFC LED Driver with Minimum Number of
External Components
nn V and V
IN
OUT Limited Only by External Components
nn Active Power Factor Correction (Typical PFC > 0.97)
nn Low Harmonic Content
nn No Opto-Coupler Required
nn Accurate Regulated LED Current (В±5% Typical)
nn Open LED and Shorted LED Protection
nn Thermally Enhanced 16-Lead MSOP Package The LTВ®3799-1 is an isolated flyback controller with power
factor correction specifically designed for driving LEDs.
The controller operates using critical conduction mode
allowing the use of a small transformer. Using a novel
current sensing scheme, the controller is able to deliver a
well regulated current to the secondary side without using
an opto-coupler. A strong gate driver is included to drive
an external high voltage MOSFET. Utilizing an onboard
multiplier, the LT3799-1 typically achieves power factors
of 0.97. The FAULT pin provides notification of open and …