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LM34927: UVLO resistor limit and shutdown/standby mode comparison

Roy Hsu
Intellectual 2840 points
Part Number: LM34927

Hi Team,

I have 2 questions about LM34927, could you help me?

1. Is VCC regulator enable or disable the only different between shutdown mode and standby mode? 

2. Is RUV2 & RUV1 have any resistance limit? And what's the resistance range recommended?

Thanks.

Best Regards,

Roy

  • +1
    TI__Guru 72255 points

    Hi  Roy,

    Thank you for posting.  

    1. You are correct.  Between Shutdown and Standby, the VCC regulator is enabled to establish the logics, but the circuit holds off. 

    2. Please refer to the datasheet section 8.2.1.2.12.  The two resistors are limited by equations (22) and (23). 

    Hope this clarifies.

    Regards,

    Youhao