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About Iq and Soft start at LMR62421

masa0301
Intellectual 960 points
Other Parts Discussed in Thread: LMR62421

Hi

I have a two question about LMR62421.

①Could you tell me the Iq below condition.

-Vin=3V
-Vin=11V

②After CTRL is high.How many seconds start switching?

Best regards,

masa

  • 0
    TI__Genius 11085 points

    The LMR62421 input voltage range is 2.7V to 5.5V. it cannot operate at Vin = 11V.

    For Vin = 3V, I found an EVM to measure it. With Vin =3V, Vout = 12V, no load, Iin = 3.07mA. If you were looking for such down Iq, the DS has 80nA with Vin = 5V.

    I also measured the time between EN rising edge to the starting point of the Vout ramp. It is about 450us. It does not change with Vin.

    Hope this helps.

    Yang