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OB3338C - Dimmable Offline LED Controller

This page provides the datasheet information for the OB3338C, a member of the OB3338C-On Dimmable Offline LED Controller family.

Datasheet Summary

Description

OB3338C is a dimmable offline controller, achieve high power factor, low THD and no stroboscopic specialized for LED lighting application combing with PFC system.

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. OB3338C is offered in SOP8 package.

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Datasheet preview – OB3338C

Datasheet Details

Part number OB3338C
Manufacturer On-Bright
File Size 115.84 KB
Description Dimmable Offline LED Controller
Datasheet download datasheet OB3338C Datasheet
Additional preview pages of the OB3338C datasheet.

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Full PDF Text Transcription

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OB3338C Dimmable Offline LED Controller GENERAL DESCRIPTION OB3338C is a dimmable offline controller, achieve high power factor, low THD and no stroboscopic specialized for LED lighting application combing with PFC system. 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. 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. And the line compensation is built in OB3338C for high precisely constant output current control.
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