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
Click here to download the full size of the above Circuit.

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).




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LC meter 16x1 LCD Display
Unidirectional motion sensor
Portable-amplifier
clock circuit
digital modified sine wave inverter
petrol gas switch for pajero
lf286 Linux USB LCD display with watchdog and buttons
Practical Transistor Circuits
Small TV terminal with ATmega8 microcontroller
ISO103 gain adjustment circuit diagram
Cycle 100 MHz frequency counter circuit diagram



Top