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Original question:

Linux/TPS61052: TPS61052

TPS61052: Minimum Vf of LED in current control

Liu Yang
Expert 6085 points
Part Number: TPS61052

Hi team,

1. If the LED Vf is about 2.3 to 2.6V, is it possible to control the current?
2. Can it be controlled no matter how small VF is
3. Are there any disadvantages or points to note in using when Vf is small?

Beat Regards,
Tom Liu

  • 0
    TI__Mastermind 22745 points

    Hi yang,

       1. The device also implements a linear low-side current regulator to control the LED current when the battery voltage is higher than the diode forward voltage.

       2. Yes, but the thermal is the main concern if VF is too small(Like LDO);

       3.  Thermal as I mentioned above.

    BR

    Sean