• State Resolved
  • Locked Locked
  • Replies 7 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 309 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LP5024: Normal-mode supply current with only 1 channel

Cedrick
Expert 8270 points
Part Number: LP5024

Hi, 

Greetings. 
 
As I understand the datasheet, the LP5024 would consume 5mA-8mA when all of the OUT is sinking 10mA. I assume that the current consumption of the LP5024 change with the number of channels driven. Is my assumption correct?

If so, I was wondering if you could provide me the typical supply current (IVCC) when only 1 channel is sinking 10mA. I am trying to get a much lower current for this device. 





Looking forward to your response. 

Thank you and have a great day.


Regards, 

Cedrick



  • 0
    TI__Genius 11836 points

    Hi Cedrick,

         We don't have typical value for a large amount of chips. Although I can test it for you, it is only applicable for only single chip.

         You can check whether power saving mode can satisfy your requirements or not.

  • 0 in reply to Charles-Chen
    TI__Expert 8270 points

    Hi Charles,

    Thank you for your quick response. 

    I've checked the power saving mode, however I think this will not meet my requirements.

    I'd really appreciate if you could help me get the information about the typical supply current (IVCC) when only 1 channel is sinking 10mA.


    Regards,

    Cedrick

  • 0 in reply to Cedrick
    TI__Genius 11836 points

    Hi Cedrick,

      We are on National Day and the information will be checked until the end of the holiday.

      As mentioned above, we don't have that data for large amount of chips. But I can test it on the EVM board and the conclusion will not applicable to all the chips. So will the data tested on the EVM be helpful to you?

  • 0 in reply to Charles-Chen
    TI__Expert 8270 points

    Hi Charles,

    I apologize if I bother you. 

    Moreover, I understand that we don't have data for large amount of chip. However, I think it'll be helpful for us if you could test it on EVM. 

    Thank you for your support. I'll wait for your feedback. 


    Regards,

    Cedrick

  • 0 in reply to Cedrick
    TI__Genius 12915 points

    Hi Cedrick,

    Sorry for late reply that this week is our national holiday.

    In fact, current consumption of LP5024 does not changed by the number of output channels or how much current they sink. It would be slightly changed varying from power supply VCC. Also there would be variation in different units. Here are some data I tested at EVM for your reference. 

    Vcc / V Iout / mA Icc / mA
    5 0 0.0065
    LED0 = 0.0974 7.5192
    LED0 = 10.008 7.5165
    LED0 = 20.248 7.5117
    all channels at 10mA 7.5263
    5.5 LED0 = 10.0178 7.8191
    2.7 LED0 = 9.9968 7.0822

     

  • 0 in reply to Cedrick
    TI__Genius 11836 points

    Hi Cedrick,

        Do you have any more questions?

  • 0 in reply to Charles-Chen
    TI__Expert 8270 points

    Hi Charles, Hardy,

    Thank you for testing this for us. I really appreciate it. 

    Have a great day!


    Regards,

    Cedrick