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ISO1640: Ask ISO1640 VCC1 max current consumption while VCC2 power / signal removed

Roy Chan
Expert 5870 points

Part Number: ISO1640

Hello Expert:

 We have an urgent case need to estimate the max current consumption of ISO1640 product as below . can you please help provide the max current consumption of VCC1?
Condition:  Revmove VCC2 / SDA2/SCL2 all power and signal side , what's the max current consumptoin on VCC1 ?( ICC1 max) = ?mA 

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  • 0
    TI__Genius 16410 points

    Hi Roy,

    The ICC1(max) is already specified in the datasheet under "6.10 Supply Current Characteristics".

    The maximum ICC1 (VCC1 supply current) when the secondary side (VCC2, SDA2, SCL2) is removed/unpowered depends on the VCC1 operating voltage:

    VCC1 Range ICC1 Typical ICC1 Max Test Condition
    3 V ≤ VCC1 ≤ 3.6 V 5.2 mA 7.1 mA VSDA2, VSCL2 = GND2
    4.5 V ≤ VCC1 ≤ 5.5 V 5.3 mA 7.2 mA VSDA2, VSCL2 = GND2
    These values are from the worst-case condition where VSDA1, VSCL1 = GND1 and VSDA2, VSCL2 = GND2 (dominant bus state), with pull-up resistors and capacitors open.
    Regards
    Varun