high voltage white led driver

Posted on Feb 7, 2014

This high voltage white LED driver electronic circuit schematic is based on the NCP5021 IC manufactured by On Semiconductor. This NCP5021 high voltage white LED driver electronic circuit is designed with ambient light sensing feature. The NCP5021 white LED driver is capable of driving up to 8 LEDs in series for portable backlight applications. T

high voltage white led driver
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he built ’in DC DC converter is based on a high efficient PWM boost structure with 32 V output voltage span. The schematic circuit is very simple, requiring few external electronic parts and it can be connected through an I2C protocol to another device or microcontroller. Main features of the NCP5021 high voltage LED driver are : 2. 7 to 5. 5 V Input Voltage Range, 90% Peak efficiency with 4. 7 _H / 150 m_ Inductor, Gradual Dimming Built ’in (Automatic Fade In/Fade Out Effect), Integrated Ambient Light Sensing Automatically Adjusts the LCD, Backlight Contrast, Support the Full I2C Protocol with Address Extension. NCP5021 is a high voltage LED driver is specially designed for backlight driver in applications like : Cellular Phone, Smartphone, Portable Media Player (PMP), Global Positioning System (GPS).

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