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OB339F - High Precision Off-line Primary-Side PWM Power Switch

This page provides the datasheet information for the OB339F, a member of the OB339F-On High Precision Off-line Primary-Side PWM Power Switch family.

Datasheet Summary

Description

OB339F 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

  • including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. OB339F is offered in DIP8 package.

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Datasheet preview – OB339F

Datasheet Details

Part number OB339F
Manufacturer On-Bright
File Size 777.05 KB
Description High Precision Off-line Primary-Side PWM Power Switch
Datasheet download datasheet OB339F Datasheet
Additional preview pages of the OB339F datasheet.

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Full PDF Text Transcription

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OB339F High Precision Off-line Primary-Side PWM Power Switch GENERAL DESCRIPTION OB339F 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. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. The LED current (CC control) can be adjusted externally by the resistor Rs at SOURCE pin. OB339F offers comprehensive protection coverage with auto-recovery features including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. OB339F is offered in DIP8 package.
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