OB3340

High PF, High CC Buck Topology LED driver

OB3340 is a high power factor and high constant current precision LED driver for LED lighting applications. OB3340 achieves comprehensive protection feature, low external component count and low ripple current. OB3340 solution can be easily designed and manufactured for high performance LED lighting application


Features: 

◆ Simplify circuit with Buck Topology (PF>0.9)
◆ High Current Accuracy 
◆ Excellent current regulation with wide AC input and inductor tolerance
◆ Analog multiplier for High Power Factor Correction
◆ Transition Mode (TM) Operation to Achieve High Efficiency
◆ Minimized BOM Count
◆ Low Start-up Current and Operating Current
◆ Soft-start function
◆ Internal Startup Timer for Stand-alone Applications
◆ Internal Leading Edge Blanking
◆ Cycle-by-Cycle Current Limiting
◆ Totem Pole Output with High State Clamping
◆ VCC Under Voltage Lockout (UVLO)
◆ VCC Over voltage protection
◆ LED Open and Short Circuit Protection 
◆ Audio Noise Free
◆ Available in SOP8 package, RoHS compliant



Applications: 

◆ LED Bulb, PAR, Tube
◆ LED Down light, Floodlight
◆ External LED driver module


Typical Application: