LM3648: power-on sequence of LM3648TT

Henry Wang3

Part Number: LM3648

Tool/software:

Hi Sir,

My customer is asking about the power-on sequence for LM3648TT, could we provide the 1.8V power to I2C bus before the 5V power to LM3848TT Vin? Does this have any side effect?

4 months ago

0 Steven Li 4 months ago

TI__Mastermind 22965 points

Hi Henry,

Our expert is currently out of office for Chinese New Year Holiday. He will reply to you after Feb.5 when back to office. Thanks for your understanding.

Best Regards,

Steven

+1 John Shen 4 months ago

TI__Intellectual 1840 points

Hi Henry,

Yes. You can provide 1.8V I2C since the IO threshold can support that.

Thanks!

Best,

John.

Power management

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LM3648: power-on sequence of LM3648TT