Fairchild RD-LS031 Data Handbook
Summary
Designed for advanced LED illumination systems, this reference design utilizes the FL7701 controller to provide high-efficiency, active PFC power management. The product features include built-in Over Temperature Protection (OTP), soft-start functionality, and programmable dimming capabilities across wide input voltages (90–150V AC). This comprehensive manual is essential for electrical engineers and designers needing schematics, item lists, and performance data to integrate a robust, reliable, and energy-efficient LED driver into their commercial lighting products.
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Fairchild Reference Design
The following reference design supports inclusion of FL7701 in design of LED illumination. It should be used in conjunction with the FL7701 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 Bulb FL7701M 90-150VAC 7.8W 31.2V/(250m A)
Key Features Digital Implemented Active PFC function Built in HV Supplying Circuit: Self Biasing AOCP Function with Auto Restart Mode Built-in Over Temperature Protection (OTP) Cycle-by-Cycle Current Limit Current Sense Pin Open Protection Low Operating Current: 0.85m A (typ.) Under-Voltage Lockout with 5V Hysteresis. Programmable Oscillation Frequency Programmable LED Current Analog Dimming Function Soft-Start Function Precise Internal Reference: ±3%
© 2012 Fairchild Semiconductor Corporation 1 RD-L030 FL7701 • Rev. 1.0.0
Page Summary Contents For Fairchild RD-LS031 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 8 |
| File Size | 345.62 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What is the required input voltage range for the FL7701 controller?
The FL7701 supports an Input Voltage Rated Range of 90-150V AC.
What primary protection features does the FL7701 offer?
It provides Active PFC, AOCP with Auto Restart Mode, Over Temperature Protection (OTP), and Cycle-by-Cycle Current Limit.
Are these reference designs guaranteed for my specific application?
No; Fairchild provides the product 'as is' without any warranty of merchantability or fitness for a particular purpose, requiring customer testing to ensure suitability.
What types of advanced control functions are available on this device?
Key features include Analog Dimming Function, Soft-Start Function, and the ability to program the oscillation frequency and LED current.