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Fairchild RD-LS015 - Fairchild Reference Design FL103M Data Handbook

Summary

This comprehensive reference design manual details the use of the FL103M driver, engineered for reliable and efficient LED illumination. It provides electrical parameters, layered schematics, transformer winding specifications, and detailed performance curves for both constant voltage (CV) and constant current (CC) control. This resource is essential for electrical engineers and lighting designers building durable, high-performance LED systems that require robust protection features and accurate dimming capabilities.

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Fairchild Reference Design

The following reference design supports inclusion of FL103M in design of LED illumination. It should be used in conjunction with the FL103M datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at http://www.fairchildsemi.com.

Input Voltage Rated Output Output Voltage

Application Fairchild Device

Range Power (Rated Current)

LED Illumination FL103M 85-265VAC 8.4W 24V (0.35A)

Key Features  Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary- Feedback Circuitry  Low EMI through Frequency Hopping  Low Power Consumption in Standby  Protection Functions: UVLO, Over-Voltage, Over-Current, and Over-Temperature

1. Schematics

R102 ES2D(200V/2A)

4.7n/1k V LED+

250V/1A BD101

MB6S(600V/0.5A)

Short

VDD VS 10R/2012 HV GATE NC CS R104

GND NC R106

FL103 R107 R108 22K/2012 2R2/3216 2R2/3216

Figure 1. Schematic

© 2011 Fairchild Semiconductor Corporation 1 RD-L015_FL103M • Rev. 1.0.2

Page Summary Contents For Fairchild RD-LS015 - Fairchild Reference Design FL103M Data Handbook

Page 1 www.fairchildsemi.com Fairchild Reference Design The following reference design supports inclusion of FL103M in design of LED illumination. It should be used in conjunction with the FL103M datasheet a...
Page 2 www.fairchildsemi.com 2. Transformer 2.1. Transformer Schematic Diagram Tape 3T Tape 3T 0.20φ * 1 Np2 41T Tape 3T Np1 0.20φ * 1 Tape 3T Na Ns 0.13φ * 1 0.32φ(TEX) * 1 27T 39T Primary Secondary 2.2. Wi...
Page 3 www.fairchildsemi.com 3. Performance Efficiency Figure 2. Efficiency Curve VO[V] IO[A] Figure 3. Constant Current Tolerance Using Electric Load (CR) © 2011 Fairchild Semiconductor Corporation 3 RD-L01...
Page 4 www.fairchildsemi.com IO[m A] VIN[VAC] Figure 4. Constant Current Tolerance Using Electric Load (CV) IO[m A] VIN[VAC] Figure 5. Constant Current Tolerance Using LED Load 4. Related Resources Datasheet...
Page 5 www.fairchildsemi.com Reference Design Disclaimer Fairchild Semiconductor Corporation (“Fairchild”) provides these reference design services as a benefit to our customers. Fairchild has made a good fa...

Manual Details

Brand Fairchild
Pages 5
File Size 269.55 KB
Published May 20, 2026
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Frequently Asked Questions

What is the supported input voltage range?

The device supports an input voltage range of 85-265V AC.

Can this unit handle both constant voltage and current?

Yes, it offers Constant-Voltage (CV) and Constant-Current (CC) Control without secondary feedback circuitry.

What types of protective functions are built-in?

It includes protection for UVLO, Over-Voltage, Over-Current, and Over-Temperature.

Where can I find additional support and documentation?

You must use it in conjunction with the FL103M datasheet, application notes, and Fairchild’s technical support team.