LD7837 - Leadtrend

LD7837 High Performance Primary Side Flyback LED Controller

The LD7837 is a high performance primary side Flyback or Buck Boost LED Controller with HV start-up special design for LED lighting. This IC operating on transition mode(TM) and integrated with completed safety requirement protections. It minimizes the components counts in a SOP-7 package. Those make it easy design for cost- effective applications. This chip.

Features

 High voltage 700V startup circuit
 Primary Side PFC controller
 Optimize THDi Over Wide Universal Range
 High LED Current Accuracy  Line Regulation 1%  +/-10% output voltage variation Regulation +/-1%  ± 5% Inductance variation ± 2%
 Power Saving 0.3W @ No Load VAC=264V
 Output Short Circuit Protection
 CS Short / Open Protection
 150/-450mA Driving Capability Applications
 LED Power Module
 LED Bulb/Tube lighting Typical Application AC Input LF1 EMI CF1ilter 6 VCC 8 HV GATE 5 Rcs CS 3 LD7837 Ccs RZ1 1 ZCD COMP 2 RZ2 GND 4 Flyback Topology Design LED+ LED- AC .