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UCC12040: Can the output current exceed 100mA？

Stanley Xu
Intellectual 1830 points
Part Number: UCC12040
Other Parts Discussed in Thread: SN65HVD888, ISO7741

I want to use UCC12040 as power supply for two channel 5V ISO RS-485（ISO7741+SN65HVD888).

Can the UCC12040 drive these load? what will happen when the output current exceed 100mA？

  • 0
    TI__Expert 3160 points

    Hi Stanley

    You can calculate the total current of ISO7741+SN65HVD888 and ensure that the total current doesn't exceed 100mA. When the output power exceeds the maximum power. The device will limit the maximum output power. If a load exceeding IOUT_MAX is applied, VISO drops accordingly to meet the maximum power limit.

    BR

    Jerry Xu