OB3394中文资料High Precision Off-line Primary-Side PWM Power Switch数据手册OB规格书

描述 Description

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.

特性 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

应用 Application

Low Power AC/DC offline SMPS for
·LED applications