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OB3338 - Low THD Offline LED Controller

This page provides the datasheet information for the OB3338, a member of the OB3338-On Low THD Offline LED Controller family.

Description

OB3338 is a dimmable offline LED lighting controller with high power factor, low THD and high constant current (CC) precision.

It can achieve low system cost for an isolated lighting application by primary side control in a single stage converter.

Features

  • including LED open loop protection, LED short circuit protection, cycle-by-cycle current limiting, built-in leading edge blanking, VDD under voltage lockout (UVLO), etc. OB3338 is offered in SOP8 package.

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Datasheet preview – OB3338

Datasheet Details

Part number OB3338
Manufacturer On-Bright
File Size 759.89 KB
Description Low THD Offline LED Controller
Datasheet download datasheet OB3338 Datasheet
Additional preview pages of the OB3338 datasheet.

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Full PDF Text Transcription

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OB3338 Dimmable High PF, Low THD Offline LED Controller GENERAL DESCRIPTION OB3338 is a dimmable offline LED lighting controller with high power factor, low THD and high constant current (CC) precision. It can achieve low system cost for an isolated lighting application by primary side control in a single stage converter. The proprietary CC control scheme is used and the system can achieve high power factor with constant on-time control scheme. Quasi-resonant (QR) operation and clamping frequency greatly improves the system efficiency. The advanced start-up technology is used to meet the start-up time requirement (<0.5s). The constant output current is compensated for tolerance of transformer inductance variation.
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