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LED171596A: Passive component values

Jerry Peacock
Prodigy 10 points
Part Number: LED171596A

Greetings all,

I am working on a circuit design to mess around with programming an AVR core to control a LED171596ARSLR.  The simplified diagram in the datasheet looks to be adequate for that purpose, but I wasn't sure what the typical values for The capacitors attached at VDD (which will be 3.3v) and the one at VLED (which will be 5v).  Also, what would the VDDIO resistor value be at 3.3v?  Lastly, at 5v VLED, what should the value be to set the output current to (or near) 20mA?

Muscle Nerdz

  • 0
    TI__Expert 4445 points
    Hi Muscle,
    This device is constant current, so VLED has no impact if the output current, please refer datasheet page 14 section 7.3.3.1 for the current setting.
    This device only support max 15mA, so you can't get 20mA in the device.
    Would you refer the EVM user guide for the other components value?
    Any more question please let me knoa, thanks!
    Summer