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Original question:

LM3433SQ-14AEV: LED Driver check, current output measurement and LED dimming

LM3433SQ-14AEV: LED Driver check, current output measurement and LED dimming

Sumit Sikka
Prodigy 40 points

Part Number: LM3433SQ-14AEV

As per your last chat we understand how to switch on or off the LED, I am interested to know how to use PWM dimming function with this driver kindly suggest for same

 

  • 0
    TI__Mastermind 28655 points
    Hello Sumit,

    See the other post I just replied to. It's in the EVM document but placing a PWM pulse with respect to ground will drive the shunt MOSFETs Q5 and Q6. When PWM is high the MOSFET is shunting so light will be inversely proportional to the PWM duty cycle. See figure 5 page 5 of the EVM document.

    Regards,