BQ40Z50-R2: LED fixed on

Federico Silva

Part Number: BQ40Z50-R2

Hi,

I want to set the leds fixed on at all times to display SOC. I'd guess polling the DISP pin constantly would do it, but is it possible to do it via some register?

Thanks,

Federico

over 6 years ago

0 Onyx Ahiakwo over 6 years ago

TI__Guru* 76230 points

Hi Federico,
pls see chapter 8 of the TRM below:
www.ti.com/.../sluubk0b.pdf

The LEDCHG and LEDON FC needs to be be set. For discharge, you may have to set the LED hold time to a very large value and then transition the /Disp pin at the expiration of that time. Note that keeping the LED on all the time is not recommended.

thanks
Onyx

Power management

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BQ40Z50-R2: LED fixed on