CH_PD is draining Li coin cell battery[Done]

rupak426
Posts: 23
Joined: Fri Apr 15, 2016 2:16 am

CH_PD is draining Li coin cell battery[Done]

Postby rupak426 » Wed Jun 08, 2016 12:42 am

Hi,

I am trying to power-On my ESP-8266-01 chip with Li-CR2032 battery (coin cell with 3.0V & 220mAH).
Esp is getting powered on, but within 30 seconds battery is getting drained.
After debugging further, I found that if CH_PD pin is pulled high, battery goes down very fast,
but if I keep CH_PD dangling, battery is somewhat stable ( but no Wi-Fi from Esp).
can you let me know if I am trying something wrong here?
Any insight will be helpful.

thanks,
Rupak

Espressif_Kelly
Posts: 140
Joined: Mon Oct 27, 2014 10:40 am

Re: CH_PD is draining Li coin cell battery

Postby Espressif_Kelly » Wed Jun 08, 2016 10:32 am

Hi,

CH_PD, chip enable pin of ESP8266EX, is active high and cannot be dangled, otherwise its electrical level will be uncertain.

For battery application, you can refer to below link for details.

viewtopic.php?f=61&t=840

More questions, please feel free to let us know.

Thanks.

eriksl
Posts: 157
Joined: Fri May 22, 2015 6:22 pm

Re: CH_PD is draining Li coin cell battery[Done]

Postby eriksl » Mon Sep 12, 2016 10:03 pm

Why don't you use a resistor, something like 10k?

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