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LM1084: LM1084 specification validation

ALEX jack
Prodigy 80 points
Part Number: LM1084

hello 

      I want to implement a design from 3.5V to 2.2V with LM1084_ADJ， load current is 2A  。

      Please  Check whether the input and output voltage and  dropout are the requirements of the device，thanks。

  • 0
    TI__Expert 6640 points

    Hi Alex,

    The dropout of LM1084-ADJ is max 1.6V at 5A load and across junction temperature range of -40C to 125C. Actual dropout will vary based on conditions of your system, most notably temperature and load.

    Based on Figure 5-1, "Dropout Voltage (VIN−VOUT)" in the datasheet, dropout at a 2A load current would be just under 1.2V. So yes, a voltage differential between IN and OUT of 1.3V (3.5V IN to 2.2V OUT) will satisfy the necessary dropout condition given the provided operating conditions.

    Regards,

    Kelsey