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LED-Driver-Slide14
In summary, a light emitting diode is a light source produced by a semiconductor. The light intensity is determined by the amount of current passing through the LED. The main tasks of the LED driver are to monitor and control the LED strings. This is important as the characteristics of a LED are highly dependent on temperature. The two main methods of dimming LEDs are analog intensity control and pulse-width modulation. Microchip LED drivers have an I²C serial interface, allowing dimming to be controlled from an Microchip MCU. This can be very useful when implementing automatic dimming based on sensor input. Microchip LED drivers utilize a power saving technique patented by Microchip. This adaptive technique ensures that the system operates at the most power efficient state at the edge of saturation. More information on Microchip LED drivers can be found in the training modules on LED solid state lighting and LED backlighting.
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