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LP5012: Shorting two individual channels of a driver

Ishwarya P
Prodigy 60 points
Part Number: LP5012
Other Parts Discussed in Thread: LP5009

As per the schematic diagram I have attached:

1)Is it possible to short two individual output channel to get higher current value.

2)Is the totem pole connection possible with this driver?

  • 0
    TI__Genius 12915 points

    Hi Ishwarya,

    1) Yes you can parallel two channels to drive one string LEDs. Make sure the voltage at outx did not exceed absolute rating.

    2) LP5012 is a current sink device so I think PNP is suitable for Q1.

  • 0 in reply to Hardy Wu
    Prodigy 60 points

    Hardy Wu said:

    Hi Ishwarya,

    1) Yes you can parallel two channels t

    Hi Ishwarya,

    1) Yes you can parallel two channels to drive one string LEDs. Make sure the voltage at outx did not exceed absolute rating.

    2) LP5012 is a current sink device so I think PNP is suitable for Q1.

    Hardy Wu said:

    Hi Ishwarya,

    1) Yes you can parallel two channels to drive one string LEDs. Make sure the voltage at outx did not exceed absolute rating.

    2) LP5012 is a current sink device so I think PNP is suitable for Q1.

    Thank you for your information.

    You mean totem pole configuration is possible with LP5012 using PNP transistor?

  • 0 in reply to Ishwarya P
    TI__Genius 12915 points

    Hi Ishwarya,

    I just noticed that in your it is LP5009 in your schematic. What is your current requirement for the LEDs? LP5012 could support 6 strings LEDs without a triode. I think it is a more simple and flexible way to control the LEDs.