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SFL668 - High Precision AC/DC PSR Controller

General Description

SFL668 is a high precision AC/DC offline PSR (Primary Side Regulation) controller for LED luminaries.

Key Features

  • 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.

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Datasheet Details

Part number SFL668
Manufacturer SiFirst
File Size 278.30 KB
Description High Precision AC/DC PSR Controller
Datasheet download datasheet SFL668 Datasheet

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Other Datasheets by SiFirst

Part Number Description
SFL669 High Precision AC/DC PSR Power Switch
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SFL678 AC/DC PSR Controller
SFL100 Constant Voltage and Constant Current Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Softwin swAides SFL668 High Precision AC/DC PSR Controller for LED Driver FEATURES ◆ 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) ◆ Output Over Voltage Protection ◆ VDD OVP & Clamp APPLICATIONS ◆ LED Luminaries ◆ LED Tube Light ◆ LED PAR30/PAR38, Down Light ◆ GU10/E27 LED B