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      OB3396

High Precision Off-line Primary-Side PWM Power Switch

OB3394 is a primary side regulation off-line LED lighting controller which can achieve accurate LED current. It significantly simplifies LED lighting system design by eliminating the secondary side feedback circuitry. 


Features: 

◆ High Precise Constant Current Regulation at Universal AC input 
◆ Primary-side Sensing and Regulation Without TL431 and Opto-coupler 
◆ Programmable CC Regulation 
◆ Adjustable Constant Current and Output Power Setting
◆ Built-in Secondary Constant Current Control with Primary Side Feedback
◆ Built-in Adaptive Current Peak Regulation
◆ Built-in Primary winding inductance compensation
◆ Power on Soft-start
◆ Cycle-by-Cycle Current Limiting 
◆ Built-in Leading Edge Blanking (LEB) 
◆ VDD Under Voltage Lockout with Hysteresis (UVLO) 
◆ VDD OVP 
◆ VDD Clamp 
◆ Available in DIP8 packages, RoHS compliant 



Applications: 

Low Power AC/DC offline SMPS for
◆ LED applications

Typical Application:

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