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  • The Evolution of Switched Capacitor Backlight Drivers in Mobile Phones
    of drivers used for LED backlighting: inductive boost converters or charge pumps. To ensure equal brightness of each LED, designers either put all LEDs in series and drive them with a constant current boost converter, or use a switched capacitor charge pump with individual current control for each
  • Connecting LEDs: Serial vs. Parallel
    When designing a handheld device with a color display using white LEDs for backlighting, is it better to use parallel or series connected LEDs? Both architectures have their own advantages when you consider the key parameters – efficiency, brightness matching, LED control and physical size
  • Drive High Intensity White LEDs Efficiently Using the PIC16C781
    High intensity white LEDs are rapidly gaining popularity because of their high light output for relatively low input current. Applications include small flashlights, backlighting, night visibility strobes for pedestrians and bikers, just to mention a few. This Technical Brief dis-cusses how

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