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ISO5451-Q1: Modeling of output drive current with respect to temperature

Komal Divate
Prodigy 20 points
Part Number: ISO5451-Q1

Hi,

In typical characteristics of output drive current against temperature, page no. 11, figure 4 and figure 5 represents

the plot which is for different VCC2-Vout for high-side driver and Vout-VEE2 for low-side driver

  • I would like to know will there be so much drop across the high-side and low-side FET when the MOSFET is turned on
  • The output drive current is it the peak current or stable current
  • Can you please provide Ron variation with temperature curves if possible

Regards,

Komal Divate

  • 0
    TI__Intellectual 1665 points

    Hi Komal,

    Thanks for reaching out. To answer your questions:

    1. The voltage drop across the RDSON of internal FETs would be depending on the current through the FETs. 

    2. It is better to treat it as output current capability. The drive current can be supported if there is enough voltage across the VDS.

    3. The max pull up resistor is 4OHM and pull down resistor is 2.5OHM. The min values can be 25% of the max value. 

    With Regards,

    Xiong