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SFL678 - AC/DC PSR Controller

Datasheet Summary

Description

SFL678 is a high performance AC/DC offline PSR (Primary Side Regulation) controller fo

Features

  • Support Analog/PWM/TRIAC Dimming.
  • Proprietary “Extended Synchronous Dimming” to Achieve Larger than 1000:1 Dimming Range.
  • Primary Side Regulation (PSR) Control, No Secondary Feedback Circuit Required.
  • 1% Precision (@Tj=25 ℃) Internal Reference Voltage for Constant Current (CC) Control.
  • Wide VDD Range (10 to 30V) Eases Flexible LED System Design.
  • Precision LED Output Voltage Clamp.
  • Compensate for Line Voltage Variation and Transformer Inductance.

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Datasheet preview – SFL678

Datasheet Details

Part number SFL678
Manufacturer SiFirst
File Size 481.55 KB
Description AC/DC PSR Controller
Datasheet download datasheet SFL678 Datasheet
Additional preview pages of the SFL678 datasheet.

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Full PDF Text Transcription

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Softwin swAides SFL678 AC/DC PSR Controller for Dimmable LED Driver FEATURES ◆ Support Analog/PWM/TRIAC Dimming ◆ Proprietary “Extended Synchronous Dimming” to Achieve Larger than 1000:1 Dimming Range ◆ Primary Side Regulation (PSR) Control, No Secondary Feedback Circuit Required ◆ 1% Precision (@Tj=25 ℃) Internal Reference Voltage for Constant Current (CC) Control ◆ Wide VDD Range (10 to 30V) Eases Flexible LED System Design ◆ Precision LED Output Voltage Clamp ◆ Compensate for Line Voltage Variation and Transformer Inductance Tolerance ◆ Built-in Soft Start ◆ All Pins Floating Protection ◆ LED Open/Short Circuit Protection ◆ PFM Control Eases EMI Design ◆ Cycle-by-Cycle Current Limiting ◆ Built-in Leading Edge Blanking (LEB) ◆ VDD Under Voltage Lockout (UVLO) ◆ V
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