OB3398 - High Precision Off-line Primary-Side PWM Power Switch

This page provides the datasheet information for the OB3398, a member of the OB3398-On High Precision Off-line Primary-Side PWM Power Switch family.

Datasheet Summary

Features

OB3398 is a primary side regulation off-line LED.
High Precise Constant Current Regulation at lighting controller which can achieve accurate LED Universal AC input current. It significantly simplifies LED lighting.
Primary-side Sensing and Regulation Without system design by eliminating the secondary side TL431 and Opto-coupler feedback circuitry. Proprietary Constant Voltage.
Floating PSR control scheme with two (CV) and Constant Current (CC) control is transformer windi.

On-Bright

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Datasheet Details

Part number	OB3398
Manufacturer	On-Bright
File Size	778.79 KB
Description	High Precision Off-line Primary-Side PWM Power Switch
Datasheet	OB3398 Datasheet
Additional preview pages of the OB3398 datasheet.

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Full PDF Text Transcription

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OB3398 High Precision Off-line Primary-Side PWM Power Switch GENERAL DESCRIPTION FEATURES OB3398 is a primary side regulation off-line LED  High Precise Constant Current Regulation at lighting controller which can achieve accurate LED Universal AC input current. It significantly simplifies LED lighting  Primary-side Sensing and Regulation Without system design by eliminating the secondary side TL431 and Opto-coupler feedback circuitry. Proprietary Constant Voltage  Floating PSR control scheme with two (CV) and Constant Current (CC) control is transformer windings integrated as shown in the figure below.  Adjustable Constant Current and Output The LED current (CC control) can be adjusted Power Setting externally by the resistor Rs at CS pin.

Published: Sep 7, 2024 |