Datasheet

© 2012 Fairchild Semiconductor Corporation 2 FEBFL7701_L30U003A • Rev. 1.0.2
Table of Contents
1. Introduction ............................................................................................................................... 3
1.1. General Description .......................................................................................................... 3
1.2. Key Features ..................................................................................................................... 3
1.3. Internal Block Diagram .................................................................................................... 4
2. General Specifications for Evaluation Board ........................................................................... 5
3. Photographs of the Evaluation Board ....................................................................................... 6
4. Printed Circuit Board ................................................................................................................ 7
5. Schematic .................................................................................................................................. 8
6. Bill of Materials ........................................................................................................................ 9
7. Test Condition & Test Equipment ............................................................................................ 9
8. Test Waveforms ...................................................................................................................... 10
8.1. Typical Waveforms: Startup .......................................................................................... 10
8.2. Operating frequency & minimum duty .......................................................................... 11
8.3. Typical waveforms: Steady State ................................................................................... 12
8.4. Typical waveforms: Abnormal Mode(LED Open) ........................................................ 15
8.5. Typical waveforms: Abnormal Mode (Inductor Short Condition) ................................ 16
9. Performance of Evaluation Board ........................................................................................... 17
9.1. Power Factor at Rated Load Condition .......................................................................... 17
9.2. System Efficiency .......................................................................................................... 18
9.3. THD Performance .......................................................................................................... 19
9.4. Thermal Performance ..................................................................................................... 20
9.5. EMI Results .................................................................................................................... 22
10.Revision History ..................................................................................................................... 24