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BQ25890: Power setting time

user5848839
Prodigy 210 points
Part Number: BQ25890

I found the BQ25890 in using,  from the power supply input +5V  to SYS output 3.7v, the setting time is 3s.

I would like to ask whether this time is normal, whether there is a way to shorten?

  • 0
    TI__Genius 10240 points
    Please refer to Figure 48 and Figure 49 on the BQ25890 datasheet, the 3 seconds from applying Vbus to ~3.7V Vsys is longer than expected. You can check REGN voltage and /PG to make sure the supply has no delay.