Sylvain PASTOR

PTN3460 - Backlight power sequence

Discussion created by Sylvain PASTOR on Jul 13, 2020
Latest reply on Jul 22, 2020 by Jozef Kozon


There is a delay of approximately 250 ms between the activation of the backlight via an I2C command (Backlight
control: 0x95)
and the change of BKLTEN output.


You can see in the screenshot below, the delay measured between the start of the activation of the PWM and the activation of the BKLTEN output:


Despite a configuration of the different timings (T12, T2 and T4), we cannot reduce this delay.

Thanks for your help!