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TPS61194: ABS MAX current and LED connection

Motoyasu Hattori
Genius 10895 points
Part Number: TPS61194

Hi,
According to TPS61194 datasheet, "Maximum current" is Typ 100mA(±5%) per channel.
My understanding is that TPS61194 can not flow current beyond this "Maximum current" and TI has not defined ABS MAX current value.  Is it correct?  Please let us know.

On the case of connecting total 200mA LEDs, Which is recommend "50mA x 4 channel connection" or "100mA x 2ch, No load (GND) x 2ch connection"?  Please advise us with reason.

Thanks and best regards,
M.HATTORI.

  • 0
    TI__Genius 13001 points

    Hi Motoyasu-san,

    100mA is the typical recommended current per channel and your understanding is correct.

    50mAx4 is a better choice, because the current sink headroom voltage is higher along with higher flowing current, which results in more power dissipation. 

    Robin