Fairchild FEB157-001 manual Electrical Requirements Input Requirements, Output Requirements

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2. Electrical Requirements

2.1 Input Requirements

Voltage range: 90Vrms to 270Vrms

Frequency: 47Hz to 63Hz

2.2 Output Requirements

The FEB157 board will power one, two, or three high brightness LEDs (Lumiled or similar) at user selectable load currents of 350mA, 700mA, or 1A.

© 2007 Fairchild Semiconductor

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Rev 1.1 April 2007

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Contents FEB157-001 User’s Guide Contents Introduction Product Description Circuit DescriptionOffline LED Driver and LED Assembly Jumper JP1/JP2 Status and LED Current JP1 Status Electrical Requirements Input Requirements Output RequirementsDesigned Solution 3.1 Schematic Transformer Bill of MaterialsRS1M Printed Circuit Board RTH1Silkscreen/Component Placement of Top Side Layer Test Results 4.1 Regulation Line Regulation LED Current vs. Line VoltageEfficiency Steady State Operation Steady State Waveforms at 90Vac with Three LEDs at 1AStart up Startup Profile at 90 Vac with Three LEDs at 1AFairchild Semiconductor 526692/7