AN1149-3A Lumileds Lighting, LLC, AN1149-3A Datasheet

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Advanced Electrical Table of Contents Diode Equation Forward Voltage Model Derivation of Diode Model Calculation of Diode Model Parameters “Worst case” Diode Models Advanced Thermal Modeling Equations Maximum Forward Current Vs. Ambient Temperature Thermally Stabilized Luminous Flux application brief AB20 ...

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Diode Equation Forward Voltage Model Traditionally, the forward current versus forward voltage characteristics junction diode have been expressed mathematically with the “Diode Equation” below. Where forward voltage forward current, A ...

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Figure 3.1A. Diode Equation Forward Voltage Model for LED Emitter (Semi-Log Scale). Figure 3.2A shows how the diode equation model compares to the forward current versus forward voltage curve shown in AB20 3, Figure 3.8. Figure 3.2A. Diode Equation Forward ...

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min max max ′ HLH O HLH S HLH ( ...

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LED emitter is driven at a constant forward current at a constant ambient temperature. Equation #3.8A models the thermally stabilized luminous flux at any forward current compared to the instantaneous ...

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Figure 3.5A. Thermally Stabilized Luminous Flux versus DC Forward Current for HPWx-xHOO LED Emitter with Different System Thermal Resistances. Figure 3.5A shows Equation #3.9A graphed as θ a function of I and R for an HPWA xH00 LED F JA ...

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... Lighting world. 2002 Lumileds Lighting. All rights reserved. Lumileds Lighting is a joint venture between Agilent Technologies and Philips Lighting. Luxeon is a trademark of Lumileds Lighting, LLC. Product specifications are subject to change without notice. San Jose, California and Malaysia. ...