The AS3833 is a 6 channel high precision LED controller with PWM input for driving external bipolar transistors in LED backlight panels, also optimized for 2D and 3D operation in TV applications. The integrated step-up controller provides the necessary output voltage for the LED string supply. The SMPS feedback control optimizes the power efficiency by adjusting the LED string supply voltage.
|LED current per output [mA]||300|
|Features||integrated step-up, 1 PWM input with phase shift, use of inexpensive BJTs with BETA compensation, LED string voltage only limited by BJT rating|
|Error detection||LED short/open with BJT temp. supervision|
|LED-to-LED matching [%]||0.6|
|Supply voltage [V]||12 - 50|
|Package||TQFP32 (7x7)-0.8p SOIC28-1.27p|