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AFE44XX

hi ,

can i with the afe44xx commande 3 IR LEDs , and iF it Is  a yes ,  how ??

thank you 

  • Manai,

    The AFE44xx devices can only control two LED's individually (more than two if you add LED's in series/parallel). If you connect the three LED's in parallel so they light up at the same time, the forward voltages may be mismatched resulting in uneven flow of current. If you connect the three of them in series, you must ensure that the LED_DRV_SUP is greater than the three forward voltages added up with some headroom of ~1V.

     

    Regards,

    Gui