ADuM3470 Maximum Output Supply Current

Hi,

About How much current can the ADuM3470 supply with 3V input and 5V output ,4Mbps data rate?  

Can I use such a configuration? I guess that it can supply only less than about 165mA,  250mA x 3V/5V.
250mA is Iiso(MAX) specification with 3V input and 3V output,2Mbps.data rate. 

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    •  Analog Employees 
    on Sep 27, 2017 12:09 AM

    James:

    I think 165mA would be approximately the max output current to expect for 3.3V to 5V conversion.  I say approximately because if you use equation (1) on page 26 of datasheet you find that the turns ratio required would be greater than 2 (2.3), so the transformer needed for 3.3V to 5V would be the 1:3 turns ratio, part no JA4650-BL, but in this case using the circuit in figure 38.

    Regards, Brian 

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  • 0
    •  Analog Employees 
    on Sep 27, 2017 12:09 AM

    James:

    I think 165mA would be approximately the max output current to expect for 3.3V to 5V conversion.  I say approximately because if you use equation (1) on page 26 of datasheet you find that the turns ratio required would be greater than 2 (2.3), so the transformer needed for 3.3V to 5V would be the 1:3 turns ratio, part no JA4650-BL, but in this case using the circuit in figure 38.

    Regards, Brian 

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