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DAC63001: DAC63001

Jake Lei
Prodigy 150 points
Part Number: DAC63001


Tool/software:

Hello, 

I am using DAC63001 as voltage-controlled source for DC/DC converter controller. 

What is limitation of current sink/source capability of built in buffer inside of module when DAC is configured as voltage source, not current source? 

My application will only require +/-2mA (source/sink) to drive DC/DC converter (feedback voltage), but I need to be able to sustain certain range of voltage but also current as well. 

It seems like it's capable of short circuit current up to 10's mA but i'm not sure If I can use this as nominal condition rating. 

Thanks

  • 0
    TI__Mastermind 42273 points

    Hi Jake, 

    2mA source/sink is acceptable. I don't have a plot for this device, but here is a source/sink plot from a similar device. 

    2mA current to drive a DC/DC feedback circuit is pretty large. Why was this chosen? Usually you just need to be an order of magnitude larger than the leakage into the feedback pin which is usually on the order of nA. 

    Best,

    Katlynne Jones