Fairchild RD-LS042 Data Handbook
Summary
This comprehensive reference design guide supports the FLS3247N main controller for developing high-efficiency LED lighting solutions. It includes detailed schematics, bill of materials, and performance data covering key features like Power Factor Correction (PFC) and accurate constant-current control. Designed for electrical engineers and designers, this manual provides the technical foundation needed to implement reliable AC-DC drivers with protection features, ensuring optimal system efficiency across various grid voltages.
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Fairchild Reference Design
The following user guide supports the demonstration kit for the FLS3247N. It should be used in conjunction with the FLS3247N datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com
Output Output Voltage
Application Fairchild Device Input Voltage Range
Power (Rated Current)
LED Bulb FLS3247N 90-265VAC 10W 25V(0.40A)
Key Features Cost effective solution without input bulk capacitor and feedback circuitry Power Factor Correction Accurate constant-current (CC) Control Linear frequency control for better efficiency and easy design Constant current regulation vs. output voltage change (11~28V) : <± 2.85% Constant current regulation vs. line voltage change (90~265VAC) : <± 2.85% Output open & short circuit protection with auto restart System efficiency up to 86.8% PF and THD: PF (> 0.9), THD(< 20%)
© 2012 Fairchild Semiconductor Corporation 1 RD-L042_FLS3247N • Rev. 1.0.0
Page Summary Contents For Fairchild RD-LS042 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 8 |
| File Size | 428.77 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What is the typical Power Factor (PF) and Total Harmonic Distortion (THD)?
The device offers PF greater than 0.9 and THD less than 20%.
How does performance vary with line voltage?
Constant current regulation against general line voltage change (90V–265V AC) is within ±1.37% to ±2.85%, depending on the specific output voltage.
Does the unit offer protection features?
Yes, it includes output open & short circuit protection with auto restart capability.
What kind of load does this device support?
It supports an LED Bulb application, with a rated current of 10W and an input range of 90-265V AC.