Drive Two-Six White LEDs (WLEDs) in Parallel


Posted on Feb 6, 2014

The parallel arrangement of LED backlights allows the control IC to utilize inexpensive low voltage CMOS processes as shown by the followingcircuit diagram which requires two to six white LEDs (WLEDs) in parallel. In many applications, LED backlights have been used in small and medium size portable LCD displays. The AAT3169 IC is capable of drivin


Drive Two-Six White LEDs (WLEDs) in Parallel
Click here to download the full size of the above Circuit.

g six LEDs for a total of 180mA from a 2. 7V to 5. 5V input. It drives the LEDs with a constant current programmed by a low-side current sink (high side current source also are available). But it can result in unacceptable channel-to-channel mismatch in large format LCD displays where a greater number of LEDs are required across a larger viewing area.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Wideband Preamp Circuit
    Parallel Port Relay Interface Circuit
    Inverter Circuit
    7812 ic 12 volt 30 amp psu circuit electronic circuit schematic
    usb power socket with indicator
    TDA7056 audio amplifier circuit diagram electronic project
    6 x 6 Loop Antenna
    Brightness display circuit 555



    Top