Light Emitting Diodes (LEDS)

Last modified by Microchip on 2023/11/09 08:54

LED Lighting

Light Emitting Diodes (LEDs) are no longer used just for providing the red and/or green indicator lights on electronic equipment. Advances in technology have allowed LEDs to be used as practical sources of illumination. The primary benefits of LEDs are long life, durability, and efficiency. When driven properly, a power LED can last tens of thousands of hours without degradation of light output. The typical luminous efficacy of power LED, measured in lumens per watt (lm/W), is between 40 lm/W - 80 lm/W. This is several times greater than the incandescent light sources and is only exceeded by fluorescent light sources. Since the LED is a solid-state device, it can withstand shock and vibration that would damage a filament bulb.

LED graphic

LED Applications

  • Automotive and aircraft cabin lighting
  • Automotive and aircraft instrument panel lighting
  • Architectural emergency exit lighting
  • Architectural color effect lighting
  • Industrial and outdoor lighting
  • Traffic and railway signals
  • Automotive brake lights
  • Dot matrix signs and video displays
  • LCD display backlighting
  • Personal flashlights
  • Medical instrument and tool lighting
  • Digital camera flash and video light

Featured LED Driver

HV9910B Universal High-Brightness Driver

  • Switching buck regulator
  • Few external components
  • 8V to 150V input voltage
  • Linear and Pulse Width Modulation (PWM) dimming

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Target Applications

  • Direct Current (DC)/DC or Alternate Current (AC)/DC driver applications
  • RGB backlighting
  • Flat-panel backlighting
  • Signage and decorative LED lighting

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